Coal mining solid-liquid coupling physical similar simulation material and use method thereof

专利摘要:
The disclosure provides a coal mining solid-liquid coupling physical similar simulation 5 material and a use method thereof. The simulation material comprises the following raw materials: glutinous rice pulp, quicklime, soil, ultrapure water and vegetable oil, wherein the glutinous rice pulp accounts for 10%-30% of the total mass of the solid-liquid coupling physical similar material, and a mass ratio of quicklime to glutinous rice pulp is (0.8:1)~(1.2:1); the soil accounts for 30% or more of the total mass; the ultrapure water accounts for 5%~15% of the total mass; the 10 vegetable oil accounts for 3%~10% of the total mass. The use method comprises the following steps: step 1, determining mechanical parameters of a simulation prototype through a mechanical test; step 2, determining a mechanical proportion of a model; step 3, preparing raw materials; step 4, determining ratios and incubation time of raw materials through an orthogonal experiment; step 5, paving the model and conducting a physical similar simulation experiment; and step 6, 15 conducting a water retention and coal mining engineering according to experiment results. According to the disclosure, the simulation material is simple and easy to implement, and solid- liquid coupling does not need isolation and is more precise; furthermore, the simulation material is mechanically similar to the rock, and good in water resistance.
公开号:NL2025793A
申请号:NL2025793
申请日:2020-06-09
公开日:2021-10-27
发明作者:Li Tao；Gao Ying
申请人:Univ Liupanshui Normal；
IPC主号:

专利说明:

COAL MINING SOLID-LIQUID COUPLING PHYSICAL SIMILAR SIMULATIONMATERIAL AND USE METHOD THEREOF
TECHNICAL FIELD The disclosure relates to the technical field of mining engineering, and particularly relates to a coal mining solid-liquid coupling physical similar simulation material and a use method thereof.
BACKGROUND Coal mining generates the seepage of water resources. Seepage of water greatly impacts the ecology of earth's surface. In addition, it has significance to collection of water resources. In order to study the seepage rule of water resources for coal mining, development of a solid-liquid coupling physical similar simulation experiment is an important method. However, the traditional coal mining solid-liquid coupling physical similar simulation material has the following problems: 1} the existing physical similar simulation materials are all basically not waterproof, which can be fast disintegrated once encountering water, and cannot undergo solid-liquid coupling simulation; 2) a few of solid-liquid coupling materials are separated, materials are isolated with polyvinyl plastics, in such a way, the precision of simulation is affected, and a situation of fracture penetration cannot be simulated; 3) the existing solid-liquid coupling material is a material simulating the soil mass rather than the rock. This is because the rock not only is required to resist water but also should be basically similar to mechanical property, especially, strength and deformation characteristics.
SUMMARY In arder to solve the above problems, the disclosure provides a coal mining solid-liquid coupling physical similar simulation material and a use method thereof.
In order to achieve the above object, the disclosure is achieved through the following technical solution: Provided is a coal mining solid-liquid coupling physical similar simulation material, the solid-liquid coupling physical similar material comprising the following raw materials: glutinous rice pulp, quicklime, sail, ultrapure water and vegetable oil, wherein the glutinous rice pulp accounts for 10%-30% of the total mass of the solid-liquid coupling physical similar material, and a mass ratio of quicklime to glutinous rice pulp is (0.8:1)~(1.2:1); the soil accounts for 30% or more of the total mass of the solid-liquid coupling physical similar material, and the soil is composed of fine sand, silt and clay whose mass ratio is 1: (0.5~1.5): (0.2~2.0); the ultrapure water accounts for 5%~15% of the total mass of the solid-liquid coupling physical similar material, the vegetable oil accounts for 3%~10% of the total mass of the solid-liquid coupling physical similar material.
The glutinous rice pulp is prepared by mixing glutinous rice flour with water and then decocting for 3h~8h at the temperature of 45°C~65°C; the mass percentage concentration of the glutinous rice pulp is 5~7%.
The mass of calcium oxide in the quicklime accounts for 70% or more.
The soil is composed of soil particles with different particle sizes after crushing and sieving, and the mineral components in the clay are measured using an X diffractometer, wherein the montmorillonite and illite mixed mineral accounts for 30% or less of the mass of the clay, wherein prior to crushing, the soil is subjected to undisturbed soil collapsibility coefficient test to remove collapsible soil, namely, the soil is made from non-collapsible soil.
The degree of mineralization in the ultrapure water is less than 10 mg/L, and the ultrapure water is prepared by using an ultrapure water maker.
The vegetable oil is vegetable oil obtained by melting at a high temperature and then cooling to 20°C~30°C.
Provided is a use method of the above coal mining solid-liquid coupling physical similar simulation material, comprising the following steps: step 1, determining mechanical parameters of a simulation prototype through a mechanical test: acquiring a rock sample by drilling, and measuring mechanical parameters through an indoor rock and soil mechanical experiment, the mechanical parameters being represented by a total stress-strain curve under a loading path; step 2, determining a mechanical proportion of a model: obtaining the height of the prototype through drilling in step 1, and obtaining the geometric dimension of the model after the prototype is reduced by X (X is folds of reduction) folds on a geometric scale, wherein the height of the reduced model is in a range of 1.3 m~1.6 m; the volume-weight similar ratio Y is 0.5~1; according to the mechanical similar criterion, mechanical strength, elastic modulus and adhesive force similarity ratio are all Z = x x y, that is to say, the stress ratio of a model material to a prototype material (rock) when strains are the same is a prototype stress : a model stress = Z:1; step 3, preparing raw materials: weighing raw materials required for the solid-liquid coupling physical similar material, the raw materials comprising glutinous rice pulp, quicklime, soil, ultrapure water and vegetable oil; step 4, determining ratios and incubation time of raw materials through an orthogonal experiment: designing ratios of 5~20 groups of raw materials and fabricating into a test soil sample to measure full stress-strain curves of material soil samples having different ratios and incubation time under loading paths; and determining similar ratio solution and incubation time t days (t is the number of days of incubation time) in conjunction with a requirement that chemical parameters of the physical similar material are reduced by Z folds in step 2; step 5, paving the model and conducting a physical similar simulation experiment: paving the models layer by layer according to the ratio solution of each layer determined in step 4, and compacting so that the specific gravity of each layer is similar to that of the prototype in 1:Y; and after t days for completion of paving of the model (wherein t is the number of days for completion of paving of the model), immediately conducting the physical similar simulation experiment, and recoding the seepage flow and ecological water level variation of superficial ecology related water in a physical similar model in the process of mining and designing the height of the coal layer; and step 8, conducting water retention and coal mining engineering according to experiment results: judging whether coal mining impacts ecological environment or not according to the seepage flow and ecological water level variation of superficial water in the physical similar model, wherein when the changed ecological water level is still in an ecological proper water level range, influence is not generated, or else influence is generated; the ecological proper water level is obtained by ecological investments; if influence is generated, the height of coal mining is gradually reduced in an amplitude of 0.1 m~0.5 m, step 5 is repeated until the influence of the coal mining ecological underwater is in the ecological proper water level; according to the height of coal mining determined based on the physical similar simulation experiment in the field, mining engineering is designed and implemented, and ecological environment is protected while the coal is mined to the greatest extent.
The existing solid-liquid coupling physical similar simulation materials are all obtained by using a solid-liquid separation simulation solution, which is mainly limited by a situation that the solid simulation material can be disintegrated once encountering water.
The materials of the disclosure select glutinous rice pulp and quicklime as cementing agents.
On the one hand, the glutinous rice pulp has a certain cementing property, and performs cementation in a form of water-proof biological polysaccharide, and on the other hand, when the glutinous rice pulp is excessive, it becomes a retarder.
On the one hand, the quicklime has a certain cementing property, and on the other hand can be mutually promoted with cementation of the glutinous rice pulp On the one hand, the coal mining solid-liquid coupling physical similar simulation material needs a certain strength, and on other hand needs water resistance.
Thus, the higher strength is not better.
Through the experiment, under the proportion required by this technology, the uniaxial compressive strength of the glutinous rice pulp and the quicklime can reach 1/200 to 1/50 of that of the actual model.
Addition of soil and vegetable oil that are in different grades is to further expand the scope and deformation characteristics that can be simulated.
The requirement for the collapsibility of minerals in the soil and undisturbed soil is to ensure the water stability of the simulation material.
The reason why ultrapure water is used is that the minerals in the water significantly affect the mechanical properties of the glutinous rice pulp, so the degree of mineralization of water is limited to 10 mg/L or less in order to reduce uncontrollable factors.
The use method of the coal mining solid-liquid coupling physical similar simulation material in the disclosure is mainly for simulating the deformation and destruction processes of the overlying rock in the process of coal mining. Therefore, it is necessary to satisfy a fact that the full stress-strain curves under the loading paths are similar. The full stress-strain curve under the loading path, which is possessed by the simulation material, is determined by sampling test and similarity criterion (elastic mechanics). Because the ratios and the incubation time have great influence on the stress-strain curve, test is conducted using the orthogonal experiment. With the addition of the glutinous rice pulp, the strength is increased and then decreased. With the increase of the clay, the strain of particles in soil is bigger under the same stress. In addition, more water is added, and the strength is in an overall descending trend. The addition of oil also affects the strength and elasticity modulus. In the early stage of coagulation, the overall strength and elasticity modulus of soil samples are obviously increased with the increase of incubation time. Therefore, materials with similar stress-strain curves can be found by adjusting different ratios and incubation time.
In the process of coal mining, from the perspective of a key layer theory, the deformation of overlying rock determines the revolving space of the key layer, and then determines the range of stress influence. Whether the material is damaged is the comparison of strength and stress. Therefore, the fracture field of coal mining can be simulated if the stress and strain are similar. The fracture field is a main channel of water seepage in the process of coal mining, in such a way, the influence of coal mining on water resources can be correctly simulated. When the influence degree is large enough to the ecological degradation (beyond the proper water level range) on a large scale, high mining needs to be further limited. Through the simulated coal mining height, a proper water retention and coal mining method can be found.
The coal mining solid-liquid coupling physical similar simulation material of the disclosure is simple and easy to implement, and the solid-liquid coupling does not need isolation any more and more precise; similar to the rock mechanics, the coal mining solid-liquid coupling physical similar simulation material is good in water resistance, easily available in various raw materials and simple in production method. BRIEF DESCRIPTION OF THE DRAWINGS For more clearly illustrating embodiments of the disclosure or the technical solution in the prior art, drawings used in embodiments or the prior art will be simply described below. Obviously, drawings described below are only some embodiments of the disclosure, a person of ordinary skill in the art can also obtain other drawings without any creative efforts.
Fig.1 is a flowchart of a coal mining solid-liquid coupling physical similar simulation material of the disclosure when in use.
DESCRIPTION OF THE EMBODIMENTS To make the purpose, the features and the benefits of the disclosure more clear, the technical solution in embodiments of the disclosure will be clearly and completely described in combination with embodiments of the disclosure. Obviously, the described embodiments are one part of embodiments of the disclosure but not all the embodiments. Based on the embodiments of the disclosure, other embodiments obtained by a person of ordinary skill in the art without any creative efforts are all included within the protective scope of the disclosure.
The disclosure provides a coal mining solid-liquid coupling physical similar simulation material, the solid-liquid coupling physical similar simulation material comprising the following 5 raw materials: glutinous rice pulp, quicklime, soil, ultrapure water and vegetable oil, wherein the glutinous rice pulp accounts for 10%-30% of the total mass of the solid-liquid coupling physical similar material, and a mass ratio of quicklime to glutinous rice pulp is (0.8:1)~(1.2:1); the soil accounts for 30% or more of the total mass of the solid-liquid coupling physical similar material, and the soil is composed of fine sand, silt and clay whose mass ratio is 1: (0.5~1.5): (0.2~2.0); the ultrapure water accounts for 5%~15% of the total mass of the solid-liquid coupling physical similar material, the vegetable oil accounts for 3%~10% of the total mass of the solid-liquid coupling physical similar material.
A method for preparing the glutinous rice pulp is as follows: the glutinous rice pulp is prepared by mixing glutinous rice flour with water and then decocting for 3h~8h at the temperature of 45°C~65°C; the mass percentage concentration of the glutinous rice pulp is 5~7%.
The mass of calcium oxide in the quicklime accounts for 70% or more.
The soil is composed of soil particles with different particle sizes after crushing and sieving, and mineral components in the clay are measured using an X diffractometer, wherein the montmorillonite and illite mixed mineral accounts for 30% or less of the mass of the clay, wherein prior to crushing, the soil is subjected to undisturbed soil collapsibility coefficient test to remove collapsible soil, namely, the soil is made from non-collapsible soil.
The degree of mineralization in the ultrapure water is less than 10 mg/L, and the ultrapure water is prepared by using an ultrapure water maker. The vegetable oil is vegetable oil obtained by melting at high temperature and then cooling to 20°C~30°C, A use method of the above coal mining solid-liquid coupling physical similar simulation material comprises the following steps: step 1, determining mechanical parameters of a simulation prototype through a mechanical test: acquiring a rock sample by drilling, and measuring mechanical parameters through an indoor rock and soil mechanical experiment, the mechanical parameters being represented by a full stress-strain curve under a loading path; step 2, determining a mechanical proportion of a model: obtaining the height of the prototype through drilling in step 1, and obtaining the geometric dimension of the model after the prototype is reduced by X (X is folds of reduction) folds on a geometric scale, wherein the height of the reduced model is in a range of 1.3 m-1.6 m; the volume-weight similar ratio Y is 0.5-1; according to the mechanical similar criterion, mechanical strength, elastic modulus and adhesive force similarity ratio are all Z = x x y, that is to say, a stress ratio of a model material to a prototype material (rock) when strains are the same is a prototype stress : a model stress = Z:1; step 3, preparing raw materials: weighing raw materials required for the solid-liquid coupling physical similar material, the raw materials comprising glutinous rice pulp, quicklime, soil, ultrapure water and vegetable oil; step 4, determining ratios and incubation time of raw materials through an orthogonal experiment: designing ratios of 5-20 groups of raw materials and fabricating into a test soil sample, and measuring full stress-strain curves of material soil samples having different ratios and incubation time under loading paths; and determining similar ratio solution and incubation time t days (t is the number of days of incubation time) in conjunction with a requirement that chemical parameters of the physical similar simulation material are reduced by Z folds in step 2; step 5, paving the model and conducting a physical similar simulation experiment: paving the models layer by layer according to the ratio solution of each layer determined in step 4, and compacting so that the specific gravity of each layer is similar to that of the prototype in 1:Y; and after t days for completion of paving of the model (wherein t is the number of days for completion of paving of the model), immediately conducting the physical similar simulation experiment, and recoding the seepage flow and ecological water level variation of superficial ecology related water in a physical similar model in the process of mining and designing the height of the coal layer; and step 8, conducting water retention and coal mining engineering according to experiment results: judging whether coal mining impacts ecological environment or not according to the seepage flow and ecological water level variation of superficial water in the physical similar model, wherein when the changed ecological water level is still in an ecological proper water level range, influence is not generated, or else influence is generated; the ecological proper water level is obtained by ecological investments; if influence is not generated, the height of coal mining is gradually reduced in an amplitude of 0.1 m~0.5 m, step 5 is repeated until the influence of coal mining ecological underwater is in the ecological proper water level; according to the height of coal mining determined based on the physical similar simulation experiment in the field, mining engineering is designed and implemented, and ecological environment is protected while the coal is mined to the greatest extent.
Embodiment: 5# coals are mined in a coal mine in Northern Shaanxi. 5# coals are covered with bedrock on which is a Salawusu loose aquifer is directly formed.
This aquifer directly bears the occurrence of earth's surface vegetations.
In order to achieve the purpose of water retention and coal mining, the physical similarity simulation is carried out by using the solid-liquid coupling similar simulation material prior to coal mining: The used solid-liquid coupling similar simulation material is composed of glutinous rice pulp, quicklime, soil, ultrapure water and vegetable oil.
Wherein, the glutinous rice pulp accounts for 10%~30% of the total mass of the solid-liquid coupling physical similar material, a mass ratio of quicklime to glutinous rice pulp is (0.8:1)~(1.2:1); the soil accounts for 30% or more of the total mass of the solid-liquid coupling physical similar material, the soil is composed of fine sand, silt and clay whose mass ratio is (1-0.5): (0.2~20); the ultrapure water accounts for 5%~15% of the total mass of the solid-liquid coupling physical similar material; the vegetable oil accounts for 3%~10% of the total mass of the solid-liquid coupling physical similar material.
A method for preparing the glutinous rice pulp is prepared by mixing glutinous rice flour with water and then decocting for 3h~8h at the temperature of 45°C~65°C; the mass percentage concentration of the glutinous rice pulp is 5~7%.
The mass of calcium oxide in the quicklime accounts for 70% or more. The soil is composed of soil particles with different particle sizes after crushing and sieving, and the mineral components in the clay are measured using an X diffractometer, wherein the montmorillonite and illite mixed mineral accounts for 30% or less of the mass of the clay, wherein prior to crushing, the soil is subjected to undisturbed soil collapsibility coefficient test to remove collapsible soil, namely, the soil is made from non-collapsible soil. The degree of mineralization in the ultrapure water is less than 10 mg/L, and the ultrapure water is prepared by using an ultrapure water maker. The vegetable oil is vegetable oil obtained by melting at high temperature and then cooling to 20°C~30°C. The solid-liquid coupling physical similar simulation material is applied to the physical simulation experiment, and the steps are as follows: step 1, determining mechanical parameters of a simulation prototype through a mechanical test: a rock sample is acquired by drilling, mechanical parameters are measured through an indoor rock and soil mechanical experiment, the mechanical parameters here are represented by a full stress-strain curve under a loading path, and unconfined ultimate compressive strength includes mudstone 10MPa, siltstone 15MPa and sandstone 30MPa. step 2, determining a mechanical proportion of a model: the height of the prototype is obtained through drilling in step 1, the geometric dimension of the model is obtained after the prototype is reduced by X=100 folds on a geometric scale, the height of the reduced model is 1.5 m; the volume-weight similar ratio Y=1; according to the mechanical similar criterion, mechanical strength, elastic modulus and adhesive force similarity ratio are all Z = X x Y=100, that is to say, the stress ratio of the model material to the prototype material (rock) when the strains are the same is a prototype stress : a model stress = 100:1, namely, the uniaxial compressive strength of the mud rock similar material includes mudstone 0.1MPa, siltstone 0.15MPa and sandstone
0.3MPa. step 3, preparing raw materials: raw materials required for the solid-liquid coupling physical similar material are weighed according to ratios, and the raw materials comprise glutinous rice pulp, quicklime, soil, ultrapure water and vegetable oil. step 4, determining ratios and incubation time of raw materials through an orthogonal experiment: ratios of 5~20 groups of raw materials are designed and the raw materials are fabricated into test soil samples, and full stress-strain curves of material soil samples having different ratios and incubation time under loading paths are measured; and determining similar ratio solution and incubation time of 3 days in conjunction with a requirement that chemical parameters of the physical similar simulation material are reduced by 100 folds in step 2. The finally determined matching material are as follows: The ratio of mudstone similar simulation material is as follows: the glutinous rice pulp is made by decocting glutinous rice flour for 3 h at 45 °C and accounts for 20% of the total mass of the simulation material, and the mass percentage concentration of the glutinous rice pulp is 5%. A mass ratio of quicklime to glutinous rice pulp is 0.8:1. The soil accounts for 40% of the total mass of the simulation material and is composed of fine sand, silt and clay whose mass ratio is 1:0.5:2.0. The montmorillonite and illite mixed mineral in the clay accounts for 20% of the mass of the clay and is made from non-collapsible soil.
The degree of mineralization in ultrapure water is 1 mg/L, and the ultrapure water accounts for 15% of the total mass of the simulation material.
The vegetable oil accounts for 9% of the total mass of the simulation material.
The siltstone similar simulation material is as follows: the glutinous rice pulp is obtained by decocting glutinous rice flour for 5 h at 55 °C, accounts for 30% of the total mass of the simulation material, and the mass percentage concentration of the glutinous rice pulp is 6%. A mass ratio of quicklime to glutinous rice pulp is 1:1. The soil accounts for 31% of the total mass of the simulation material and is composed of fine sand, silt sand and clay whose mass ratio is 1:1.5:1. In the clay, the montmorillonite and illite mixed mineral accounts for 20% of the mass of the clay, and is made from non-collapsible soil.
The degree of mineralization in ultrapure water is 1 mg/L, and the ultrapure water accounts for 5% of the total mass of the simulation material.
The vegetable oil accounts for 4% of the total mass of the simulation material.
The sandstone similar simulation material is as follows: the glutinous rice pulp is obtained by decocting glutinous rice pulp powder for 8h at 65 °C, accounts far 10% of the total mass of the simulation material, and the mass percentage concentration of the glutinous rice pulp is 5%. A mass ratio of quicklime to glutinous rice pulp is 1.2:1. The soil accounts for 60% of the total mass of the simulation material and is composed of fine sand, silt sand and clay whose mass ratio is 1:1:0.2. In the clay, the montmorillonite and illite mixed mineral accounts for 20% of the mass of the clay, and is made from non-collapsible soil.
The degree of mineralization in ultrapure water is 1 mg/L, and the ultrapure water accounts for 15% of the total mass of the simulation material.
The vegetable oil accounts for 3% of the total mass of the simulation material. step 5, paving the model and conducting a physical similar simulation experiment: the models are paved layer by layer according to the ratio solution of each layer determined in step 4 and compacted so that the specific gravity of each layer is similar to that of the prototype in 1:1; and after 3 days for completion of paving of the model, the physical similar simulation experiment is immediately conducted, and the seepage flow and ecological water level variation of superficial ecology related water in a physical similar model are recorded in the process of mining and designing 5m of coal layer; and step 8, conducting water retention and coal mining engineering according to experiment results: whether coal mining impacts ecological environment or not is judged according to the seepage flow and ecological water level variation of superficial water in the physical similar model, when the 5m of height of coal mining is designed, the changed ecological water level is still in an ecological proper water level range (burial depth is 1.5 m~4.5 m), then step 5 is repeated, the height of coal mining is changed and designed in an amplitude of 0.1~0.5 m, when the height of coal mining is 4m, the changed ecological water level is in the ecological proper water level range (burial depth is 4.4 m after coal mining). In the engineering field, mining engineering is designed and implemented according to the 4m of height of coal mining determined by the physical simulation experiment. The ecological environment is protected while the coal is mined to the greatest extent.
The above embodiment is only for illustrating the technical solution of the disclosure rather than limiting thereto. Although the disclosure is described in detail with reference to the foregoing embodiment, it should be understood that a person of ordinary skill in the art still can make amendments to the technical solutions in the above embodiments, or make equivalent replacement to partial technical features therein. However, these amendments or replacements do not make the essence of the corresponding technical solution depart from the spirit and scope of the technical solution of various embodiments of the disclosure.

权利要求:
Claims (7)
[1]
1. A physically similar simulation material for a solid-fluid coupling in coal mining; wherein the raw materials for the physically similar solid-fluid coupling simulation material include the following raw materials: glutinous rice pulp, quicklime, soil, ultra-pure water and vegetable oil; wherein the glutinous rice pulp constitutes 10% - 30% of the total mass of physically similar solid-liquid coupling simulation material; the mass ratio of quicklime to glutinous rice pulp is (0.8:1) ~ (1.2:1); the soil constitutes 30% or more of the total mass and the soil is composed of fine sand, slip and clay with a mass ratio of 1: (0.5-1.5): (0.2 ~ 2.0); the ultra-pure water constitutes 5% ~ 15% of the total mass of the physically similar solid-liquid coupling simulation material; the vegetable oil constitutes 3% ~ 10% of total mass of physically similar solid-fluid coupling simulation material.
[2]
The physically similar coal mining solid-fluid coupling simulation material according to claim 1, wherein the glutinous rice pulp is prepared by mixing glutinous rice flour with water and then cooling at a temperature of 45°C ~ 65°C for 3 to 8 hours. ; wherein the mass percentage of the glutinous rice pulp is 5 to 7%.
[3]
The physically similar coal mining solid-fluid coupling simulation material according to claim 1, wherein the calcium oxide in the quicklime is 70% or more.
[4]
The physically similar solid-fluid coupling simulation material in coal mining according to claim 1, wherein the mixed minerals montmorillonite and illite in the clay constitute 30% or less of the mass of the clay and the clay is composed of non-collapsing soil/ loess; the soil after grinding and sieving is composed of soil particles of different particle sizes; and mineral components in the clay are measured with an X diffractometer, wherein the mixed minerals montmorillonite and illite in the clay constitute 30% or less of the mass of the clay; wherein the soil is subjected, prior to crushing, to an undisturbed slump coefficient test to remove the soil that may collapse.
[5]
The physically similar coal mining solid-fluid coupling simulation material according to claim 1, wherein the degree of mineralization in the ultra-pure water is less than 10 mg/L, and the ultra-pure water is prepared using an ultra-pure water maker.
[6]
The physically similar coal mining solid-fluid coupling simulation material according to claim 1, wherein the vegetable oil is vegetable oil obtained by melting at a high temperature and then cooling to 20°C - 30°C.
[7]
An application method of a physically similar simulation material for a solid-fluid coupling in coal mining according to any one of claims 1 to 6, comprising the steps of: step 1, determining mechanical parameters of a simulation prototype by means of a mechanical test: acquisition of a rock sample by drilling; and measurement of mechanical parameters by means of an indoor rock and soil mechanical experiment, wherein the mechanical parameters are represented by a full stress-strain curve under a loading path; step 2, determining a mechanical proportion of a model: obtaining the height of the prototype by drilling in step 1, and obtaining the geometric dimension of the model after the prototype has been reduced X-fold on a geometric scale; wherein the height of the reduced model is within a range of 1.3 m ~ 1.6 m; the volume-to-weight ratio of the like material Y is 0.5 — 1; according to the mechanical criterion of the like material, the mechanical strength, modulus of elasticity and bonding force ratio are all Z = x x y; i.e. the ratio of the stress of model material to prototype material, when the stresses are the same, equals prototype stress : model stress = Z:1; step 3, preparation of raw materials: weighing of raw materials, which are required for the physically similar simulation material for a solid-liquid coupling according to proportions; wherein the raw materials include glutinous rice pulp, quicklime, soil, ultrapure water and vegetable oil; step 4, determination of ratios and incubation time of raw materials by means of an orthogonal experiment: designing ratios of 5-20 groups of raw materials, and their manufacture in a test soil sample; and measurement of full stress-strain curves of material soil samples with different ratios and incubation time under loading paths; and determining a similar ratio solution and incubation time of t days in combination with the requirement that the chemical parameters of the physically similar simulant material be reduced Z-fold in step 2; step 5, planes of the model and perform a physically similar simulation experiment: planes of the models layer by layer according to the ratio solution of each layer determined in step 4; and densification so that the specific gravity of each layer is comparable to that of the prototype in 1:Y; and after t days for completion of planarization, immediate execution of the physical-similar simulation experiment; and recoding of the seepage flow and the ecological variation in the water level of ecologically related surface water in a physically comparable model during mining and design of the coal seam height; and step 6, conduction of water retention and execution of coal mining according to experiment results: assessment whether or not coal mining influences the ecological environment according to the seepage flow and the ecological variation in the water level of surface water in the physically comparable model, where, when the changed ecological water level is still in an ecologically appropriate water level range, no influence is generated or influence is generated elsewhere; the ecologically correct water level is obtained through ecological investments; when influence is generated, the height of the coal mining is gradually lowered in an amplitude of 0.1 m~0.5 m; step 5 is repeated until the influence of the coal mining is ecologically underwater on the ecologically correct water level; According to the height of coal mining, which is determined based on the physically similar simulation experiment in the field, mining technology is designed and implemented, and the ecological environment is protected, while most of the coal is mined.

类似技术:

---

公开号 | 公开日 | 专利标题

---

Xiao et al.2017|Elastoplastic constitutive model for rockfill materials considering particle breakage

---

Arulrajah et al.2014|Reclaimed asphalt pavement and recycled concrete aggregate blends in pavement subbases: laboratory and field evaluation

---

Shi et al.2020|Practical estimation of compression behavior of clayey/silty sands using equivalent void-ratio concept

---

Yu et al.2019|Experimental study on the brittle-ductile response of a heterogeneous soft coal rock mass under multifactor coupling

---

CN105759011A|2016-07-13|Testing material of slope blasting dynamic analysis model well as upper and lower plate surrounding rock mass similar material, fault zone similar material thereof and preparation method thereof

---

Fu et al.2020|Damage constitutive model and strength criterion of cemented paste backfill based on layered effect considerations

---

Zeng et al.2021|Disintegration characteristics and mechanisms of carbonaceous mudstone subjected to load and cyclic drying–wetting

---

Sudla et al.2020|Laboratory investigation of cement-stabilized marginal lateritic soil by crushed slag–fly ash replacement for pavement applications

---

NL2025793A|2021-10-27|Coal mining solid-liquid coupling physical similar simulation material and use method thereof

---

Jitsangiam et al.2013|Sustainable use of coarse bauxite residue for alternative roadway construction materials

---

Niu et al.2017|Basic physical properties and mechanical behavior of compacted weathered granite soils

---

Azam et al.2014|Matric suction in recycled unbound granular materials

---

Maghool et al.2019|Geotechnical properties of steel slag aggregates: Shear strength and stiffness

---

Echeta et al.2013|Effect of partial replacement of granite with washed gravel on the characteristic strength and workability of concrete

---

Wang et al.2019|Mechanical behavior of cemented granular aggregates under uniaxial compression

---

Woyesa Ararsa et al.2018|Suitability of Ambo Sandstone Fine Aggregate as an Alternative River Sand Replacement in Normal Concrete Production

---

Mu et al.2021|Research on the Mechanical Properties and Energy Consumption Transfer Law of Cement Tailings Backfill Under Impact Load

---

Lee et al.2020|Materials for Civil Engineering: Properties and Applications in Infrastructure

---

Tawk et al.2021|Role of rubber crumbs on the stress-strain response of a coal wash matrix

---

Sukkarak et al.2021|Strength and Equivalent Modulus of Cement Stabilized Lateritic with Partial Replacement by Fly Ash and Rice Husk Ash

---

Cosentino et al.2014|Ground tire rubber as a stabilizer for subgrade soils.

---

Lee et al.2015|Thermal conductivity of compacted fill with mine tailings and recycled tire particles

---

Bevilacqua et al.1996|Comminution of porous materials

---

Herbstová et al.2005|Parameters for non-engineered colliery clayfills

---

Pettersen Skippervik2014|Study on the swelling potential of some selected rocks

同族专利:

---

公开号 | 公开日

---

CN111398568A|2020-07-10|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

CN109180079A|2018-11-14|2019-01-11|安徽建筑大学|A kind of preparation method and applications method of water proof type glutinous rice mortar|

---

CN110196185A|2019-06-25|2019-09-03|西安科技大学|A kind of solid-liquid coupling physical simulation experimental material and preparation method thereof|

---

GB9522949D0|1995-11-09|1996-01-10|M & A Packaging Serv Ltd|Fill level measuring|

---

CN104090087B|2014-07-18|2015-03-25|中国矿业大学|Coal mine collapse column bursting water geological mechanics fluid-solid coupling test device|

---

CN104458309B|2014-12-10|2017-04-19|西安科技大学|Similar material proportion determining method used in physical simulation experiment|

---

CN105784945B|2016-05-03|2018-07-06|安徽理工大学|For the fluid structurecoupling simulation material and preparation method of coal measures pressure-bearing fault activation gushing water similar test|

---

CN106631372A|2016-11-17|2017-05-10|湖州尚翔生态农业有限公司|Cuttage culture medium for crape myrtle twigs and preparation method thereof|

---

CN109020364A|2018-08-01|2018-12-18|湖北工程学院|A kind of sandstone analog material and preparation method thereof|

---

CN109400101B|2018-12-14|2021-05-28|成都理工大学|Wall surface repairing material and preparation method thereof|

---

CN109704708B|2019-01-16|2021-07-27|山东理工大学|Fracture zone similar material for solid-fluid coupling simulation experiment and preparation method thereof|

---

CN109704707B|2019-01-16|2021-05-28|山东理工大学|Confined aquifer similar material for solid-fluid coupling simulation experiment and preparation method thereof|

---

CN110018291B|2019-04-18|2020-05-05|中国矿业大学|Filling mining fluid-solid coupling physical analog simulation experiment test system|

---

法律状态:

优先权:

---

申请号 | 申请日 | 专利标题

---

CN202010327895.5A|CN111398568A|2020-04-23|2020-04-23|Solid-liquid coupling physical similarity simulation material for coal seam mining and use method thereof|

---