• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention discloses an apparatus for passing through an old sipe for the coal mining work surface in the technical field of mining engineering and its method of use, comprising a coal mining engineering system, a filling system of the old sipe and a pressure control system of the mine, wherein the coal mining engineering The system comprises a first segment of the coal working surface, a second segment of the coal working surface, an old incision, a new incision, a conveyor lane and a return air lane, and wherein the filling system of the old incision comprises a backing layer, a carrier layer and a flexible form that is in the old And wherein the mine pressure control system includes rock drilling, a pressure sensor, rock storage device, and a signal processor, the present invention can quickly go through the old cut without moving work and the operation is simple and easy to carry out; an integral filler material is formed in the old incision to reduce top plate accidents; In the mining process, the decomposition of the filler material is controlled manually in order to reduce the loss of the coal mining machine and at the same time reduce the accidents of pressing the rack.
    公开号:BE1027748B1
    申请号:E20205845
    申请日:2020-11-24
    公开日:2021-08-24
    发明作者:Ying Gao；Tao Li
    申请人:Univ Liupanshui Normal；
    IPC主号:
    专利说明:

    Device for going through an old incision for the coal mining work surface and its method of use
    TECHNICAL FIELD The present invention relates to the technical field of mining engineering, and more particularly to a device for going through an old cut for the coal working surface and its method of use.
    BACKGROUND ART Mining is the technology and science of extracting mineral resources from the crust and the surface of the earth and, in the broadest sense, also includes extracting coal and oil, therefore mining is divided into coal and non-coal mining. Mining is an important raw material industry. The metal ore is the main raw material of the smelting industry, and non-metallic ores are important chemical raw materials and building materials. The coal mines are areas where people mine the coal deposits in coal-rich mining areas, they are generally divided into underground coal mines and open pit coal mines. Generally, when the coal seam is far from the surface of the earth, underground tunnels are dredged to extract the coal, this is a shaft coal mine; in general, when the distance between the coal seam and the surface of the earth is very small, the surface earth layer is directly peeled off to dig coal, this is an open pit coal mine; most of the coal mines in China belong to the shaft coal mine. There is usually only one incision during the coal mining process, however two or more than two incisions are formed for man-made or natural reasons. When going through an old cut, the pressure of the coal mining work surface suddenly increases, which will lead to a series of accidents such as the rigging and the falling rocks, etc., causing economic loss and personal injury and death. Because of this, there is a need for some apparatus to pass the coal mining work surface through an old cut. The conventional old incision passing device and its method of use have the following problems: (1) When a bag filling is used to pass an old incision, the load-bearing capacity is insufficient, and if the top plate pressure is higher, the top plate crashes ; (2) when a segmented panel is used, a structural surface is formed between the segmented areas, and an accident of the top plate is also easy to occur; (3) When a high-strength, large-area filler is used for filling, there is greater wear and tear on the coal mining machine, moreover, stress concentration can easily occur, and rack crushing can easily occur, resulting in enormous economic loss. On the basis of this, the present invention develops an apparatus for passing through an old sipe for the coal mining work surface and its method of use to solve the above problems.
    SUMMARY OF THE PRESENT INVENTION The present invention seeks to provide a coal work surface pass-through apparatus and method of use to solve the problems set forth in the prior art. In order to achieve the above object, the present invention employs the following technical solution: a device for passing through an old sipe for the coal mining work surface and its method of use, comprising a coal mining engineering system, a filling system of the old sipe, and a pressure control system of the mine; wherein the coal mining engineering system comprises a first segment of the coal working surface, a second segment of the coal working surface, an old cut, a new cut, a conveyor lane and a return air lane, and
    > BE2020 / 5845 wherein the first segment of the coal working surface is located between the new cut and the old cut, and wherein the second segment of the coal working surface is located on the other side of the old cut, and wherein the first segment of the coal working surface and the second segment of the Coal working surface are interconnected by the old incision, and wherein the conveying lane and the return air lane are symmetrically arranged on the two sides of the first segment of the coal working surface and the second segment of the coal working surface, and wherein the side surfaces of the first segment of the coal working surface and the second segment of the coal working surface are connected to the conveyor lane and the return air lane; and wherein the fill system of the old incision comprises a backing layer, a backing layer and a flexible form disposed in the old incision, and wherein the backing layer is below the backing layer, and wherein the flexible form envelops the outside of the backing layer and the backing layer; and wherein the mine pressure control system comprises rock penetration wells, a pressure sensor, rock penetration storage device and a signal processor, and wherein the rock penetration wells are evenly spaced in the packing of the old cut, and wherein the pressure sensor is embedded in the upper segment of the carrier layer, and wherein the Rock breaker storage device is arranged in the return air passage and connected to the rock penetration bores, and wherein a switch is arranged between each rock breakage bore and the rock breakage storage device, and wherein the signal processor is arranged in the return air passage and is electrically connected to the pressure sensor.
    The backing layer preferably consists of clay material and water in a ratio of 2: 1 to 1: 1, the clay material containing a montmorillonite mineral and the content of the montmorillonite mineral being 30-50%.
    The thickness of the backing layer is preferably 5% -20% at the level of the old incision.
    The carrier layer is preferably produced by cement, a cement early strength agent and water, the solid-liquid ratio being 1.5: 1 to 1: 1. Preferably, the mass of the cement early strength agent occupies 1-5% in the total mass of the cement and the cement early strength agent.
    A method of using the apparatus for going through an old cut for the coal mining work surface, comprising the steps of: S1: filling the old cut, injecting the liquid mortar of the backing layer and the backing layer into the flexible mold, and embedding the pressure sensor; S2: determining a leading influence distance D of the coal mining work area and a periodic weighting distance B by means of the physical simulation experiments; S3: Performing mining for the first segment of the coal mining work surface from the new cut and stop when the distance to the old cut 3 is 1.2D-1.5D; S4: Carrying out the rock penetration holes in the packing of the old incision and connecting to the rock breakage storage device, the rock penetration holes being equally spaced along the strike direction and the inclination direction of the coal mining work surface, and the distance along the strike direction of the coal mining work surface 0.5B-0, 9B and the distance along the inclination direction of the coal mining work surface is 10-20 m; S5: further mining the first segment of the coal mining work surface and the packing of the old sipe and monitoring the stress state of the packing, the monitoring frequency being 1 hour / time to 1 day / time; S6: monitor to detect an area with continuously decreasing pressure of the top plate, turn on the switch of the area with continuously decreasing pressure of the top plate to inject a rock breaker into the area with continuously decreasing pressure of the top plate, and turn off the switch after Breaking the filling body of the area with continuously decreasing pressure of the top plate; S7: further dismantling of the work surface and safe passage through the old incision, with no catastrophe of the top plate occurring and the coal mining machine not showing excessive wear.
    Compared to the prior art, the present invention has the following advantageous effects
    Broken rock breaker storage device and switch to allow quick passage through the old incision, eliminating the need to move the work surface, and the operation is simple and easy to perform; (2) In the present invention, a backing layer and a backing layer are disposed in the old sipe, moreover, the exterior of the backing layer and the backing layer is wrapped with a flexible mold to form an integrated filler material in the old cut, thereby increasing the filling strength is achieved and the top platen accidents are effectively reduced; (3) In the present invention, by setting the switch, the rock breaker storage device injects the rock breaker successively into the rock breaker holes one by one, manually controlling the decomposition of the filler material to reduce the loss of the coal mining machine and at the same time to reduce the accidents of pressing the rack .
    BRIEF DESCRIPTION OF THE DRAWING In order to explain the technical solution in the embodiments of the present invention more clearly, the figures to be used in the explanation of the embodiments are briefly presented below. Obviously, the figures described below show only a few embodiments of the present invention. Those of ordinary skill in the art can obtain other figures based on the figures without having to do any creative work. Figure 1 shows a schematic plan view of the present invention. Figure 2 shows a schematic sectional view of the present invention. In the figures, the respective reference symbols stand for the respective components: 1 First segment of the coal mining work surface 2 Second segment of the coal mining work surface 3 Old cut 4 New cut 5 Conveyor lane 6 Return air lane
    7 Rock breaking hole 8 Pressure sensor 9 Rock breaking fluid storage device 10 Signal processor 11 Switch 12 Flexible form 13 Backing layer 14 Carrier layer
    DETAILED DESCRIPTION In connection with figures in the embodiment of the present invention, the technical solutions in the embodiment of the present invention will be clearly and fully explained below. Obviously, the illustrated embodiments are not all embodiments, but only a part of embodiments of the present invention; all other embodiments obtained by those skilled in the art based on the embodiments in the present invention without creative work are to be considered to be included within the scope of the present invention.
    Embodiment 1 Referring to figures, the present invention provides a technical solution: a device for passing through an old sipe for the coal mining work surface and its method of use, comprising a coal mining engineering system, a filling system of the old sipe and a pressure control system of the mine; wherein the coal mining engineering system comprises a first segment of the coal working surface 1, a second segment of the coal working surface 2, an old sipe 3, a new sipe 4, a conveyor lane 5 and a return air lane 6, and wherein the first segment of the coal working area 1 between the new incision 4 and the old incision 3 is arranged, and the second
    Segment of the coal mining work surface 2 is arranged on the other side of the old incision 3, and wherein the first segment of the coal mining work surface 1 and the second segment of the coal mining work surface 2 are connected to one another by the old incision 3, and wherein the conveyor alley 5 and the return air alley 6 are symmetrical the two sides of the first segment of the coal working surface 1 and the second
    Segments of the coal mining work surface 2 are arranged, and wherein the side surfaces of the first segment of the coal mining work surface 1 and the second segment of the coal mining work surface 2 are connected to the conveying lane 5 and the return air lane 6;
    and wherein the filling system of the old incision comprises a backing layer 13, a carrier layer 14 and a flexible form 12 arranged in the old incision 3, the backing layer 13 consisting of clay material and water in a ratio of 2: 1 to 1: 1 , and wherein the clay material contains a montmorillonite mineral and the content of the montmorillonite mineral is 30-50%, and the thickness of the backing layer 13
    5% -20% at the level of the old incision 3, and wherein the carrier layer 14 is located below the backing layer 13, and wherein the carrier layer is made by cement, a cement early strength agent and water, and where the solid-liquid ratio 1.5: 1 to 1: 1, and wherein the mass of the early strength agent is 1-5% in the total mass of the cement and the cement
    Occupies early strength agent, and wherein the flexible form 12 envelops the outside of the backing layer 13 and the carrier layer 14 and is permeable to water and not permeable to mortar; and wherein the mine pressure control system is rock penetration wells 7, a pressure sensor 8, a rock breakage storage device 9, and a signal processor
    10 comprises, and wherein the rock penetration bores 7 are distributed with an equal distance in the packing of the old cut 3, and wherein the distance along the strike direction of the coal working surface 0.5-0.9 times as the periodic weighting distance of the coal working surface and the distance along the direction of inclination of the coal mining work surface is 10-20 m; and where the
    Pressure sensor 8 is embedded in the upper segment of the carrier layer 14, and wherein the rock breaker storage device 9 is arranged in the return air path 6 and connected to the rock breaker holes 7, and wherein a switch 11 is arranged between each rock breaker hole 7 and the rock breaker storage device 9, and wherein the signal processor 10 is arranged in the return air path 6 and electrically connected to the pressure sensor 8.
    A method of using the apparatus for going through an old cut for the coal working surface, comprising the steps of:
    5 S1: Filling the old incision 3, injecting the liquid mortar of the carrier layer 14 and the backing layer 13 into the flexible mold 12 and embedding the pressure sensor 8; since the flexible mold 12 does not allow water and liquid mortar to pass through and during the mining process of the first segment of the coal mining work surface 1 sets, it is bound to the top plate of the coal seam (the backing layer 13 contains expanded
    Montmorillonite mineral) to form a good packing;
    S2: determining a leading influence distance D of the coal mining work area and a periodic weighting distance B by means of the physical simulation experiments;
    S3: Carrying out a mining for the first segment of the coal working surface 1 from the new cut 4 and stopping when the distance to the old fin cut 3 is 1.2D-1.5D, the pressure of the mine starts to be advanced on the filler body because the filling body currently has a higher filling strength and the backing layer 13 can partially discharge the pressure, an accident of the top plate will occur;
    S4: Carrying out the rock penetration bores 7 in the filling body of the old fin cut 3 and connecting to the rock breakage medium storage device 9, the rock penetration bores 7 being distributed along the strike direction and the inclination direction of the coal mining work surface at an equal distance, and the distance along the strike direction of the coal mining work surface 0, 5B-0.9B and the
    Distance along the direction of inclination of the coal mining work surface is 10-20 m;
    S5: further mining the first segment of the coal mining work surface and the packing of the old sipe and monitoring the stress state of the packing, the monitoring frequency being 1 hour / time to 1 day / time; S6: Monitor to an area with continuously decreasing pressure of the
    Detecting the upper plate, switching on the switch 11 of the area with continuously decreasing pressure of the upper plate, so that the rock breaker storage device 9 step by step a rock breaker in the area with it continuously
    ) BE2020 / 5845 injects reducing pressure of the top plate to decompose the packing in the old incision 3, by controlling the decomposition area of the packing, the packing is gradually decomposed under the pressure monitoring, so that the pressure is transmitted one after the other to the front, at the same time the Reduced wear of the coal mining machine, after the breaking of the filling body of the area with continuously decreasing pressure, the switch 11 is switched off; S7: further dismantling of the work surface and safe passage through the old incision 3, with no catastrophe of the top plate and the coal mining machine not showing excessive wear.
    The area with continuously decreasing pressure of the top plate in S6 refers to the fact that the monitoring result continuously decreases for 3 times continuously or the monitoring result shows for 2 times that the pressure has decreased by more than 30%, with the breaking of the filling body the area of continuously decreasing pressure of the top plate means that a continuous fracture has been formed.
    Embodiment 2 In a coal mine 3201 in Anhui Province, the coal seam of the coal working area is not stably distributed because of the influence of the scouring body, after the formation of a cut, the detection through the tunnel is carried out, thereby it is found that a larger coal working area can be formed to mine coal resources more efficiently; however, when dismantling from the new cut, it is said to go through an old cut 30 m wide, and going through the old cut using moving the work surface costs nearly 10 million.
    With regard to the above situation, the filling method in the present technical solution can be used to go through the old incision, and the method has the following steps: S1: filling the old incision 3, injecting the liquid mortar of the carrier layer 14 and the underlayer 13 into the flexible mold 12 and embedding the pressure sensor 8; wherein the backing layer 13 consists of clay material and water in a ratio of 1.5: 1, and wherein the content of the montmorillonite mineral in the clay material is 38%, and wherein the thickness of the backing layer is 10% at the level of the old incision, and wherein the carrier layer 14 is located below the backing layer 13,
    a BE2020 / 5845 and wherein the carrier layer is produced by cement, a cement early strength agent and water, and wherein the solid-liquid ratio is 1.2: 1, and wherein the mass of the early strength agent occupies 2% in the total mass; and wherein the flexible form 12 envelops the backing layer 13 and the carrier layer 14 and is permeable to water and not permeable to mortar;
    S2: Determination of a leading influence distance D of the coal mining work area of 14 m and a periodic weighting distance B of 24 m by means of the physical simulation experiments; S3: Carrying out a mining for the first segment of the coal mining work surface 1 from the new cutting 4 and stopping when the distance to the old cutting 3 is 19 m, S4: Carrying out the rock penetration holes 7 in the filling body of the old fin cut 3 and connecting to the rock breaker storage device 9, the rock penetration holes 7 along the strike direction and the dip direction of the
    Coal mining work surfaces are distributed at an equal pitch, and wherein the distance along the strike direction of the coal mining work surface is 15 m and the distance along the inclination direction of the coal mining work surface is 15 m; S5: Further mining of the first segment of the coal working surface and the filler of the old incision and monitoring of the state of stress of the
    Packing, the monitoring frequency being 1 hour / time to 1 day / time; and wherein the monitoring frequency of the sensor outside the leading influence distance of the coal working surface is 1 day / time, while the monitoring frequency of the sensor within the leading influence distance of the coal working surface is 1 hour / time;
    S6: monitoring in the process of step 5 to detect an area with continuously decreasing pressure of the upper plate, turning on the switch 11 of the area with continuously decreasing pressure of the upper plate to inject a rock breaker into the area with continuously decreasing pressure of the
    Injecting the top plate, and turning off the switch 11 after the breaking of the filling body of the area with continuously decreasing pressure of the top plate;
    U BE2020 / 5845 S7: further dismantling of the work surface and safe passage through the old incision 3, with no catastrophe of the top plate and the coal mining machine not showing excessive wear.
    Due to the technical use of the present exemplary embodiment, no relocation of the work surface is required, which means that the relocation costs of almost 10
    Millions are reduced, moreover, there is no top plate accident, and the economic and social benefits are pronounced.
    In the explanation of the present description, the technical terms “an exemplary embodiment”, “example” and “detailed example” mean that the detailed features, structures, materials or properties explained in connection with the exemplary embodiment or example are contained in at least one exemplary embodiment or example.
    In the present description, the explanation of the technical terms by way of example does not necessarily relate to the same exemplary embodiments or examples.
    In addition, the detailed features, structures,
    Materials or properties in any one or more embodiments or examples are combined in an appropriate manner.
    The disclosed preferred embodiments of the present invention are only used to aid in explaining the present invention.
    The preferred embodiments do not explain all details, and the present invention is not limited to the detailed embodiment either.
    Obviously, many changes and modifications can be made on the basis of the contents of the present description.
    In the present description, the exemplary embodiments are selected and explained in detail in order to better explain the principle and the actual application of the present invention, so that the
    Those skilled in the art can excellently understand and use the present invention.
    The present invention is to be limited only by the claims and all scope and equivalents thereof.
    权利要求:
    Claims (6)
    [1]
    A device for passing through an old sipe for the coal mining work surface, characterized in that it comprises a coal mining engineering system, a filling system of the old sipe and a pressure control system of the mine; wherein the coal mining engineering system comprises a first segment of the coal mining work surface (1), a second segment of the coal mining work surface (2), an old cut (3), a new cut (4), a conveyor lane (5) and a return air lane (6) and wherein the first segment of the coal working surface (1) is located between the new cut (4) and the old cut (3), and wherein the second segment of the coal working surface (2) is located on the other side of the old cut (3) is, and wherein the first segment of the coal mining work surface (1) and the second segment of the coal mining work surface (2) are connected to each other by the old incision (3), and wherein the conveyor lane (5) and the return air lane (6) symmetrically on both sides of the first segment of the coal working surface (1) and the second segment of the coal working surface (2) are arranged, and wherein the side surfaces of the first segment of the coal working surface ( 1) and the second segment of the coal mining work surface (2) are connected to the conveyor lane (5) and the return air lane (6); and wherein the filling system of the old incision comprises a backing layer (13), a carrier layer (14) and a flexible form (12) which are arranged in the old incision (3), and wherein the carrier layer (14) is located below the backing layer ( 13) is located, and wherein the flexible form (12) envelops the outside of the backing layer (13) and the carrier layer (14); and wherein the pressure control system of the mine comprises rock penetration bores (7), a pressure sensor (8), a rock breaker storage device (9) and a signal processor (10), and wherein the rock penetration bores (7) are equidistantly spaced in the packing of the old cut (3) are distributed, and wherein the pressure sensor (8) is embedded in the upper segment of the carrier layer (14), and wherein the rock breaker storage device (9) is arranged in the return air passage (6) and connected to the rock breaker bores (7), and between each
    Rock penetration bore (7) and the rock breaker storage device (9) a switch (11) is arranged, and wherein the signal processor (10) is arranged in the return air passage (6) and is electrically connected to the pressure sensor (8).
    [2]
    2. Device for going through an old incision for the coal mining work surface according to claim 1, characterized in that the underlay (13) consists of clay material and water in a ratio of 2: 1 to 1: 1, the clay material containing a montmorillonite mineral and the Content of the montmorillonite mineral is 30-50%.
    [3]
    3. Device for passing through an old incision for the coal mining work surface according to claim 1, characterized in that the thickness of the backing layer (13) is 5% -20% at the level of the old incision (3).
    [4]
    4. Device for going through an old incision for the coal mining work surface according to claim 1, characterized in that the carrier layer is made of cement, a cement early strength agent and water, the solids-liquid ratio 1.5: 1 to 1: 1 amounts to.
    [5]
    5. A device for passing through an old incision for the coal mining work surface according to claim 4, characterized in that the mass of the cement early strength agent occupies 1-5% in the total mass of the cement and the cement early strength agent.
    [6]
    Method of using a device for going through an old incision for the coal mining work surface according to any one of claims 1 to 5, characterized in that it comprises the following steps: S1: filling the old incision (3), injecting the liquid mortar of the carrier layer (14 ) and the backing layer (13) in the flexible form (12) and embedding the pressure sensor (8);
    a BE2020 / 5845 S2: Determination of a leading influence distance D of the coal mining work area and a periodic weighting distance B by means of the physical simulation experiments; S3: Carrying out a mining for the first segment of the coal mining work surface (1) from the new cut (4) and stopping when the distance to the old cut (3)
    Is 1.2D-1.5D; S4: Execution of the rock penetration bores (7) in the filling body of the old incision (3) and connection to the rock penetration storage device (9), the rock penetration bores (7) along the strike direction and the direction of inclination of the
    Coal working surface are distributed at an equal pitch, and the distance along the strike direction of the coal working surface is 0.5B-0.9B and the distance along the inclination direction of the coal working surface is 10-20 m; S5: Further dismantling of the first segment of the coal mining work surface (1) and the filling body of the old incision (3) and monitoring of the stress state of the
    Packing, the monitoring frequency being 1 hour / time to 1 day / time; S6: monitoring to detect an area with continuously decreasing pressure of the upper plate, turning on the switch (11) of the area with continuously decreasing pressure of the upper plate to inject a rock breaker into the area of continuously decreasing pressure of the upper plate, and
    Switching off the switch (11) after the breaking of the filling body of the area with continuously decreasing pressure of the top plate; S7: further dismantling of the work surface and safe passage through the old incision (3), with no catastrophe of the top plate and the coal mining machine not showing excessive wear.
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    同族专利:
    公开号 | 公开日
    BE1027748A1|2021-06-08|
    CN110761792A|2020-02-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN110030031A|2019-02-26|2019-07-19|天地科技股份有限公司|The method that coal column is left in a kind of longwell recycling house column type goaf|
    CN110410076A|2019-08-16|2019-11-05|山东科技大学|A kind of filling mining method for leaving Pillar Recovery for old pillars of a house goaf|
    法律状态:
    2021-09-30| FG| Patent granted|Effective date: 20210824 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201911214765.4A|CN110761792A|2019-12-02|2019-12-02|Old hole cutting device for coal face and application method|
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