CN-121993205-A - Gob-side entry retaining mining system and concrete wall supporting method

CN121993205ACN 121993205 ACN121993205 ACN 121993205ACN-121993205-A

Abstract

The application belongs to the technical field of coal mine supporting equipment, and discloses an gob-side entry retaining mining system which comprises a coal mining support, a supporting support and a concrete wall support, wherein the coal mining support is used for coal mining, the supporting support is used for supporting, the concrete wall support comprises a concrete wall template, a crawler-type travelling mechanism, a supporting mechanism and a bag hanging mechanism, the concrete wall template comprises a flexible bag and an anchor rod, the supporting mechanism comprises a base, a telescopic assembly and a top beam, the telescopic assembly can be telescopic in the vertical direction in a bidirectional manner, the bag hanging mechanism comprises a supporting assembly and a clamping assembly, the supporting assembly comprises a flat supporting piece and a pressing piece, the flat supporting piece is hinged with the top beam and used for flat supporting the anchor rod, the pressing piece is arranged on the top beam and used for clamping the anchor rod with the flat supporting piece, and the clamping assembly is arranged on the top beam and used for clamping the flexible bag. The concrete wall casting method solves the problems that only one section of concrete wall can be cast at a time, when the concrete is not solidified, the dismantling and the casting of the next section of concrete wall cannot be carried out, so that the working efficiency is low, and the support is difficult to meet the coal mining requirement.

Inventors

LIU WEI
YANG HAILI
SHI GENJUN
WANG QIANG
WU KE

Assignees

天地宁夏支护装备有限公司

Dates

Publication Date: 20260508
Application Date: 20260320

Claims (9)

1. A gob-side entry retaining mining system, comprising: The coal mining support is positioned in a roadway coal mining area and is used for mining coal; The support bracket is connected with the coal mining bracket in a matched manner, can move along the advancing direction of the coal mining bracket and is used for supporting one end of a roadway close to the coal mining bracket; The concrete wall support comprises a concrete wall template, a crawler-type advancing mechanism, a supporting mechanism and a bag hanging mechanism, wherein the concrete wall template comprises a flexible bag and an anchor rod, the anchor rod penetrates through the flexible bag, the flexible bag is used for containing concrete, the advancing mechanism is used for advancing along a preset track, the supporting mechanism comprises a base, a telescopic assembly and a top beam, the base is located on the advancing mechanism, the telescopic assembly is connected with the base, the top beam is arranged at one end, far away from the advancing mechanism, of the telescopic assembly, the telescopic assembly can be stretched in a vertical direction in a bidirectional manner and used for driving the top beam to move and limiting the movement of the advancing mechanism, the bag hanging mechanism comprises a supporting assembly and a clamping assembly, the supporting assembly comprises a flat supporting piece and a pressing piece, the flat supporting piece is hinged with the top beam and can be overturned along a hinged position and is matched with the anchor rod, the pressing piece is arranged on the top beam and can reciprocate along the same direction as the extending direction, the top beam is connected with the telescopic assembly in a matched manner and used for driving the supporting piece to move along the upper side and the anchor rod, and the flexible bag is clamped and can move along the flexible supporting assembly.
2. The gob-side entry retaining mining system of claim 1 wherein said clamping assembly includes a clamping plate and a first telescoping member, one end of said first telescoping member extending into said header and the other end of said first telescoping member being connected to said clamping plate, said clamping plate being removably connected to said flexible bag on one side of said header for clamping said flexible bag, and said first telescoping member being telescoping in a direction of extension of said anchor rod.
3. The gob-side entry retaining mining system of claim 2, wherein the clamping assembly further includes an auxiliary plate connected to the header and extending in a direction that is the same as the direction of extension of the first telescoping member, and wherein an end of the flexible bag is capped on the auxiliary plate and removably connected to the clamping plate.
4. The gob-side entry retaining mining system of claim 1 wherein said flat supporting member includes a flap and a second telescoping member, one end of said second telescoping member being pivotally connected to said top beam and the other end of said second telescoping member being connected to said flap, said flap being pivotally connected to said top beam, said second telescoping member being capable of driving said flap to turn along a hinge.
5. The gob-side entry retaining mining system of claim 1 wherein said hold down includes a third telescoping member and a pressure plate, one end of said third telescoping member extending into said top beam and the other end of said third telescoping member being connected to said pressure plate, said pressure plate extending through said top beam and being slidably connected to said top beam, said third telescoping member being adapted to drive said pressure plate in a direction along which said anchor rod extends and to clamp said anchor rod between said flat support member and said pressure plate.
6. The gob-side entry retaining mining system of claim 5, wherein the hold down includes a push plate disposed at an end of the pressure plate remote from the third telescoping member, the push plate being cooperatively coupled to the flexible bag for adjusting the position of the anchor rod under the drive of the third telescoping member.
7. The gob-side entry retaining mining system of claim 6, wherein the pressure plate and the flat support are each provided with a stop collar that is in stop engagement with the anchor rod for limiting displacement of the anchor rod.
8. The gob-side entry retaining mining system of claim 1, wherein the telescoping assembly comprises a stand column and a telescoping column, wherein two ends of the stand column are respectively connected with the base and the top beam for driving the top beam to move up and down in the vertical direction, one end of the telescoping column is connected with the base, and the other end of the telescoping column is connected with the travelling mechanism for driving the base to move up and down in the vertical direction.
9. A concrete wall supporting method, which is applied to the gob-side entry retaining mining system according to any one of claims 1 to 8, and comprises the following steps: step S10, the coal mining support is moved to a coal mining area before coal mining; step S20, after the coal mining support is moved, the support is moved forwards in a transmission connection mode; step S30, the concrete wall support is switched and moved forwards; S31, moving the travelling mechanism to a preset position, and installing a concrete wall template to the bag hanging mechanism; step S32, after the bag hanging mechanism is installed, controlling the supporting mechanism to support and limit the movement of the travelling mechanism, and driving the bag hanging mechanism to reach a preset position; and S40, pouring concrete, and repeating the steps S10 to S40 after the concrete is coagulated.

Description

Gob-side entry retaining mining system and concrete wall supporting method Technical Field The invention belongs to the technical field of coal mine supporting equipment, and particularly relates to a gob-side entry retaining mining system and a concrete wall supporting method. Background Gob-side entry retaining refers to retaining one of the lanes (usually a transport lane) in the stoping process of the working face of the upper section, and using the lane as a stopable lane (usually a return air lane) of the stoping working face of the next section. In the prior art, the concrete composite material has the characteristics of preforming, self-forming, dewatering, self-compaction and the like, has good roadway maintenance effect, and has the advantages of simple filling process and filling equipment, and is applied to partial mining areas at present. For example, the gob-side entry retaining side supporting method of publication No. CN101117890a is a method of constructing a wall body on one side of a roadway. The method is a currently and generally used gob-side entry retaining filling and supporting method, but the method mainly states materials for constructing the wall body and the structure of the wall body, and does not relate to how to use filling templates and supporting devices capable of realizing mechanized operation in the filling process. The comprehensive gob-side entry retaining support device with the publication number of CN101289939B is arranged in a transportation roadway or a return roadway through a roadway advanced support bracket, a roadway side filling rear template bracket, a roadway side filling side template bracket and a group of working face hydraulic brackets are sequentially arranged in parallel along the roadway side, all the brackets are vertically connected with the running direction of a conveyor, and the roadway side filling rear template bracket, the roadway side filling side template brackets arranged on the left side and the right side of the roadway side filling rear template bracket and the adjustable hydraulic template enclose a filling die cavity for forming a gob-side entry retaining filling wall. The method is favorable for coal pillar-free mining, is safe in operation, convenient to operate and high in adaptability, not only can form an isolated goaf beside a roadway and shield a concrete filling wall to solidify and harden the concrete filling wall into a regular wall body, but also can shield and cooperate with a working face conveyor, a coal mining machine, a template support and the like to carry out normal coal mining production, and effectively solves the problem of how to carry out mechanized formwork erection and integral support and realize parallel operation of wall body filling and coal mining production. However, in the whole coal mining process, operators are mostly in shift work, continuous coal mining is needed, concrete walls are poured continuously for supporting, in the scheme, pouring of a single section of concrete wall can be performed each time, concrete is not solidified and cannot be removed, the amount of gangue at the bottom of a roadway is large, the geological condition is poor, the self-moving type support is difficult to move, the setting up efficiency of gob-side entry retaining is easy to reduce, and the supporting efficiency cannot meet the coal mining efficiency. Disclosure of Invention Based on the above, the application provides the gob-side entry retaining concrete wall bagging device, so as to solve the problems that in the whole coal mining process, operators are mostly in shift work, continuous coal mining is needed, and uninterrupted concrete wall pouring is needed for supporting, in the scheme, only a single section of concrete wall pouring can be carried out at a time, concrete is not solidified and cannot be removed, more gangue at the bottom of a roadway and poor geological conditions exist, the self-moving support is difficult to move, the setting efficiency of the gob-side entry retaining is easy to be reduced, and the supporting efficiency cannot meet the coal mining efficiency. The technical scheme for solving the technical problems is as follows: A gob-side entry retaining mining system comprises a coal mining support, a supporting support and a concrete wall support, wherein the coal mining support is located in a coal mining area of a roadway and is used for coal mining, the supporting support is connected with the coal mining support in a matched mode, the supporting support can move along the advancing direction of the coal mining support and is used for supporting one end of the roadway, which is close to the coal mining support, the concrete wall support comprises a concrete wall template, a crawler-type advancing mechanism, a supporting mechanism and a bag hanging mechanism, the concrete wall template comprises a flexible bag and an anchor rod, the anchor rod penetrates through the flexible bag and is use