A movable propulsion airbag steel structure filling retaining wall and construction method

Abstract

The present invention provides a movable propulsion type airbag steel structure filling retaining wall and a construction method, including an installation vehicle and a retaining wall. The installation vehicle specifically includes a frame, and moves by wheels, and can support the retaining wall to the position of the tunnel to be blocked, can support the retaining wall, and can improve the construction efficiency and construction safety of the tunnel blocking retaining wall. In addition, the retaining wall is connected in a rigid-flexible form, and the rubber can be expanded and contracted within an appropriate range, so that the blocking area of ​​the retaining wall can be conveniently and appropriately adjusted to ensure that the airbag expansion amount can fully contact with the walls of each tunnel, and can maintain a certain support strength while blocking efficiently. Therefore, such a structural form can greatly reduce the construction cost while meeting the construction requirements, reduce the labor intensity, and improve the construction safety, and is suitable for use in underground tunnels.

Description

Technical Field

[0001] The present invention relates to the technical field of mine void area management, and is a filling retaining wall device and a construction method used in a cemented filling mining method, and is specifically a movable propulsion type air bag steel structure filling retaining wall and a construction method. Background Art

[0002] After mining, a large goaf area will be formed underground, which has great risks of surface subsidence and second-step mining safety. Therefore, cement filling construction must be carried out on the goaf to form a filling body with a certain strength. Before the underground filling operation, the mine exit tunnel at the bottom of the empty mine room needs to be blocked to prevent the filling mortar before initial setting from spreading to the production working surface. The blocking retaining wall plays the role of separating the empty area, supporting the filling body, draining and controlling the precipitated water, and monitoring the filling process during the filling process. It is a key process to ensure the safety of the mining site and the stability of the environment.

[0003] At present, most of the backfill retaining walls are brick retaining walls and reinforced concrete retaining walls. The use of the above retaining wall forms requires the transportation of construction materials from the surface to the underground, and a large number of personnel to work underground. It is necessary to go through complex construction processes such as masonry, reinforcement, formwork, pouring, maintenance, and demolding. There are obvious disadvantages such as high material cost, long construction period, high labor intensity, high safety risk, and difficulty in anti-leakage treatment of the retaining wall edge. These are the biggest obstacle to achieving cost reduction and efficiency improvement in backfill mining mines.

[0004] The existing Chinese patent, an inflatable board wall for mine filling, publication number CN217462242U, discloses the use of air bags to block tunnels. Although it overcomes the disadvantages of traditional tunnel blocking methods to a certain extent, due to the large area of ​​multiple air bags arranged on the blocking section, it will affect the blocking strength to a certain extent, and the blocking surface needs to bear a large load in the initial stage of blocking. In addition, there is still the disadvantage of inconvenient adjustment of the blocking position during the blocking construction process.

[0005] Therefore, in order to overcome the shortcomings of the prior art, a movable propulsion type airbag steel structure filling retaining wall and a construction method are proposed. Summary of the invention

[0006] The technical problems to be solved by the present invention are: solving the disadvantages of inconvenience in traditional mine tunnel blocking construction and high construction cost; and eliminating potential safety hazards during the construction process.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] A movable propulsion type air bag steel structure filling retaining wall is provided, comprising an installation vehicle and a retaining wall.

[0009] The installation vehicle specifically includes a frame, and wheels for the installation vehicle to travel are arranged at the bottom of the frame; a connection end is arranged at the front end of the frame, and a pneumatic station and a hydraulic station are respectively arranged on the installation vehicle;

[0010] The retaining wall specifically includes a retaining wall middle plate, a retaining wall top plate and a retaining wall side plate. The retaining wall top plate is connected to the top of the retaining wall middle plate through a top connecting rubber. The retaining wall side plates are two pieces, which are respectively connected to the two sides of the retaining wall middle plate through side end connecting rubbers. A propulsion hydraulic cylinder is installed between the retaining wall middle plate and the retaining wall top plate and between the retaining wall middle plate and the side end connecting rubber. The propulsion hydraulic cylinder is connected to the hydraulic station and the extension and retraction of the propulsion hydraulic cylinder is achieved through the control valve on the hydraulic station, so that the retaining wall top plate and the retaining wall side plates can be extended to the outside of the retaining wall. Air bags are arranged on the bottom of the retaining wall middle plate, the top of the retaining wall top plate and the outside of the retaining wall side plates. The air bags are connected to the air pressure station and the contraction or expansion of the air bags can be controlled by the control valve on the air pressure station.

[0011] A connecting ear is arranged on the middle plate of the retaining wall, and the connecting ear is connected to the connecting end.

[0012] Preferably, a foot hydraulic support is provided at the bottom of the frame, the foot hydraulic support is connected to the hydraulic station and can be extended and retracted through a control valve to adjust the height of the installation vehicle and support the installation vehicle.

[0013] Preferably, a top foot hydraulic support is provided on the top of the frame, which is connected to the hydraulic station and is retracted and extended by a control valve, so as to be pressed against the top of the tunnel and cooperate with the bottom foot hydraulic support to fix the installation vehicle.

[0014] Preferably, a dovetail groove or a T-shaped groove is provided on the top of the retaining wall side plate, one end of the side end connecting rubber is slidably connected to the dovetail groove or the T-shaped groove, and the other end is fixedly connected to the retaining wall top plate.

[0015] Preferably, the connecting ear and the connecting end are hingedly connected via a latch.

[0016] Preferably, the front end of the connecting end is an upwardly bent plate, and a slot is provided at the bottom of the connecting ear, and the bent plate can be inserted into the slot from the bottom.

[0017] Preferably, plug rings are provided on the surface sides of the middle plate of the retaining wall, the top plate of the retaining wall and the side plates of the retaining wall, and auxiliary support pins parallel to the propulsion hydraulic cylinder are inserted in the corresponding plug rings between the middle plate of the retaining wall and the top plate of the retaining wall and in the corresponding plug rings between the middle plate of the retaining wall and the side plates of the retaining wall.

[0018] Preferably, a hydraulic support rod is further included, one end of which is hinged on the connecting ear, and the other end is provided with a foot plate supported on the ground, and is connected to the hydraulic station to achieve its extension and retraction, thereby supporting the retaining wall.

[0019] Preferably, exhaust holes are provided on the plate surface of the top plate of the retaining wall.

[0020] In addition, a method for filling a mine tunnel using an airbag steel structure to fill a retaining wall is provided, and the specific method is as follows;

[0021] Connect the installation vehicle to the retaining wall, move the retaining wall to the tunnel to be filled and blocked by the installation vehicle, and calibrate the retaining wall to a reasonable position in the tunnel to ensure that all edges of the airbag can be pressed against the tunnel wall after inflation.

[0022] The extension of the hydraulic cylinder is controlled by the hydraulic station, and the hydraulic cylinders are pushed forward one by one in the order of the upper part first, then the left side, and finally the right side, until the outer edge of the top plate of the retaining wall and the outer edge of the side plate of the retaining wall are 20 cm away from the tunnel wall, then the advancement is stopped and the hydraulic push rod is locked and fixed;

[0023] The airbags are inflated by controlling the air pressure station, and are inflated one by one in the order of the upper part first, then the left side and finally the right side. After the airbags come into contact with the inner wall of the tunnel, four airbags are inflated at the same time and the pressure is controlled so that the airbags are in contact with the tunnel wall.

[0024] Disconnect the connecting ear from the connecting end to achieve the disassembly of the installation vehicle and the retaining wall, and complete the tunnel blocking.

[0025] The beneficial effect of the present invention is that the present invention installs the retaining wall by combining an installation vehicle and a retaining wall. During the installation process, the installation vehicle can transport the retaining wall, adjust the installation position, and support the retaining wall. Therefore, the construction efficiency and construction safety of the tunnel blocking retaining wall can be improved.

[0026] In addition, the present invention adopts a combination of rigid wall panels and airbags for blocking, wherein the rigid wall panels are multiple and connected by elastic rubber, and a hydraulic cylinder is provided at the connecting end of each wall panel, and the hydraulic cylinder can adjust the distance between the connected wall panels by telescoping, and since the rubber has a certain elasticity, no gap will be generated, and the shorter rubber connection point still has a certain strength. Therefore, by telescoping the rubber within an appropriate range, the blocking area of ​​the retaining wall can be conveniently and appropriately adjusted, ensuring that the expansion amount of the airbag can fully contact the walls of each lane, and maintaining a certain support strength while blocking efficiently, and thus, through such a structural form, while meeting the construction requirements, the construction cost can be greatly reduced, the labor intensity can be reduced, and the construction safety can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 is a schematic diagram of the overall structure provided by an embodiment of the present invention from a rear side perspective;

[0029] Figure 2 is a schematic diagram of the overall structure provided by an embodiment of the present invention from a front side perspective;

[0030] Figure 3 is a schematic diagram of a vehicle body structure provided by an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the retaining wall provided by an embodiment of the present invention from a front side perspective;

[0032] Figure 5 is a schematic diagram of the front and rear perspective structure of a retaining wall provided by an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of a first connection structure between a connection end and a connection ear provided in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of a second connection structure between a connection end and a connection ear provided in an embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the connection structure between the top connection rubber and the retaining wall side plate provided by an embodiment of the present invention;

[0036] In the figure: 1-installation vehicle, 1.1-frame, 1.11-connection end, 1.2-wheel, 1.3-bottom foot hydraulic support, 1.4-top foot hydraulic support, 1.5-air pressure station, 1.6-hydraulic station, 2-retaining wall, 2.1-middle plate of retaining wall, 2.11-observation door, 2.12-connection ear, 2.13-latch, 2.2-retaining wall top plate, 2.21-exhaust hole, 2.3.-retaining wall side plate, 2.4-air bag, 2.5-propulsion hydraulic cylinder, 2.6-top connection rubber, 2.7-side end connection rubber, 2.8-connection slide, 3-hydraulic support rod. DETAILED DESCRIPTION

[0037] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present invention rather than to limit the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0038] In a specific embodiment, a movable push-type airbag steel structure filling retaining wall is provided, including an installation vehicle 1 for transportation and support, and a retaining wall 2 is installed at the front end of the installation vehicle 1. In this example, an airbag is arranged at the edge of the retaining wall 2 and can expand along the edge of the retaining wall 2 to block the edge of the tunnel. The specific structure is as follows:

[0039] The installation vehicle 1 comprises a vehicle frame 1.1, and wheels 1.2 for the installation vehicle 1 to move are arranged at the bottom of the vehicle frame 1.1. In this example, the installation vehicle 1 can move by itself or be towed by an external vehicle.

[0040] In order to enable the retaining wall 2 to be installed at the front end, a connecting end 1.11 is provided at the front end of the vehicle frame 1.1.

[0041] In addition, the installation vehicle 1 is provided with a pneumatic station 1.5 and a hydraulic station 1.6, which are powered by a motor or an internal combustion engine, and are provided with corresponding control valves, which can provide power and control the corresponding cylinders, and are related to the prior art and will not be described in detail.

[0042] In addition, the retaining wall 2 in this example specifically includes a retaining wall middle plate 2.1, a retaining wall top plate 2.2 and a retaining wall side plate 2.3, a total of four plates are spliced. The details are as follows:

[0043] The top plate 2.2 of the retaining wall is connected to the top of the middle plate 2.1 of the retaining wall through the top connecting rubber 2.6. The side plates 2.3 of the retaining wall are divided into two pieces, and are respectively connected to the two sides of the middle plate 2.1 of the retaining wall through the side connecting rubber 2.7. In this example, each connecting rubber has a certain elasticity, preferably nitrile rubber, so that multiple splicing plates can be flexibly spliced ​​into an integral wall. Therefore, it is convenient to carry the wall. In addition, the extension adjustment of the wall can be utilized through the rubber elastic connection, and the blocking area of ​​the retaining wall can be conveniently and appropriately adjusted. In addition, since the rubber area is not very large, when supported by the hydraulic cylinder, the splicing of multiple plates will still maintain a certain rigidity and have a good supporting capacity. In this example, the specific expansion and contraction forms of each splicing plate are as follows:

[0044] A propulsion hydraulic cylinder 2.5 is installed between the middle plate 2.1 and the top plate 2.2 of the retaining wall, and between the middle plate 2.1 and the side connecting rubber 2.7 of the retaining wall. The propulsion hydraulic cylinder 2.5 is connected to the hydraulic station 1.6, and the corresponding control valve on the hydraulic station 1.6 can realize the extension and retraction of the propulsion hydraulic cylinder 2.5, so that the top plate 2.2 and the side plate 2.3 of the retaining wall can be extended to the outside of the retaining wall 2, so that the area of ​​the retaining wall 2 can be adjusted conveniently and quickly, thereby improving the installation applicability.

[0045] On this basis, in order to achieve complete blocking of the tunnel and make the edge of the retaining wall and the edge of the tunnel more tightly blocked, air bags 2.4 are arranged on the bottom of the middle plate 2.1 of the retaining wall, the top of the top plate 2.2 of the retaining wall and the outer side of the retaining wall side plate 2.3. The air bags 2.4 are connected to the air pressure station 1.5 and can be controlled by the corresponding control valve on the air pressure station 1.5. The air bags 2.4 are in contact with each tunnel wall to achieve adaptive sealing during blocking, thereby improving the blocking efficiency.

[0046] In this example, the specific connection method between the retaining wall 2 and the installation vehicle 1 is that a connecting ear 2.12 is provided on the middle plate 2.1 of the retaining wall, and the connecting ear 2.12 is connected to the connecting end 1.11.

[0047] In this case, there are two installation forms for the connection ear 2.12 to be connected to the connection end 1.11. The first is that the connection ear 2.12 is hinged to the connection end 1.11 through a pin 2.13, and the installation vehicle 1 and the retaining wall 2 are installed by plugging and unplugging the pin 2.13. In order to further improve the convenience of connection and avoid the inconvenience of plugging and unplugging, the second is that the front end of the connection end 1.1 is set as an upward bending plate, and a slot is set at the bottom of the connection ear 2.12, and the bent plate section can be inserted into the slot from the bottom. The connection ear 2.12 can be separated from the connection end 1.1 by adjusting the frame 1.1 downward, and the frame 1.1 can be inserted and supported by the connection ear 2.12 upward, thereby improving the efficiency of disassembly and assembly.

[0048] Therefore, the present invention adopts the combination of rigid wall and airbag for blocking, which can maintain a certain supporting rigidity while having efficient blocking. In addition, the installation vehicle 1 is used to adjust the installation position, making the installation more convenient and efficient. During the installation process, the installation vehicle always maintains support to avoid the retaining wall from tipping over, thereby improving construction safety.

[0049] On this basis, in order to improve the stability of the installation vehicle during installation and to achieve lifting and lowering adjustment, a foot hydraulic support 1.3 is provided at the bottom of the vehicle frame 1.1. The foot hydraulic support 1.3 is connected to the hydraulic station 1.6 and can be extended and retracted through a control valve to adjust the height of the installation vehicle and support the installation vehicle 1, which is similar to the forklift being able to lift the retaining wall 2 to a certain height. It should be noted that this example is carried out while keeping the rear end of the installation vehicle 1 in the form of mating.

[0050] In combination with the above, in order to further improve the stability of the installation vehicle during construction, a top foot hydraulic support 1.4 is provided on the top of the frame 1.1, which is also connected to the hydraulic station 1.6 and is retracted and extended by a control valve. During construction, it can be pressed against the top of the tunnel and cooperate with the bottom foot hydraulic support 1.3 to fix the installation vehicle 1.

[0051] In this case, since the rubber at the connection between the retaining wall side plate 2.3 and the retaining wall top plate 2.2 is subjected to bidirectional tensile force, in order to avoid fatigue tearing of the connecting rubber at this location, a dovetail groove or T-shaped groove is provided on the top of the retaining wall side plate 2.3, and one end of the side end connecting rubber 2.7 is slidingly connected to the dovetail groove or T-shaped groove, and the other end is fixedly connected to the retaining wall top plate 2.2. Therefore, when the side end connecting rubber 2.7 is stretched toward the side end, it can release the lateral stretching freedom of the connecting rubber 2.7 by sliding in the dovetail groove or T-shaped groove, thereby improving the service life of the side end connecting rubber 2.7.

[0052] In this case, since the propulsion hydraulic cylinder 2.5 is extended and retracted in parallel along each spliced ​​wall panel, and since the connection is a soft connection made of rubber, in order to prevent the propulsion hydraulic cylinder 2.5 from being damaged by shear force and bending moment, and at the same time further improve the support strength of the spliced ​​retaining wall 2, the retaining wall middle plate 2.1, the retaining wall top plate 2.2 and the retaining wall side plate 2.3 are all provided with plug rings on the plate surface side, and auxiliary support pins parallel to the propulsion hydraulic cylinder 2.5 are provided in the corresponding plug rings between the retaining wall middle plate 2.1 and the retaining wall top plate 2.2, and in the corresponding plug rings between the retaining wall middle plate 2.1 and the retaining wall side plate 2.3. Therefore, the auxiliary support pin can replace the propulsion hydraulic cylinder 2.5 to resist shear force and bending moment, increase the service life of the hydraulic cylinder, and further improve the support rigidity of the wall.

[0053] In order to further improve the stability of the retaining wall, especially to maintain stability after being separated from the installation vehicle, a hydraulic support rod 3 is also included. One end of the hydraulic support rod 3 is hinged on the connecting ear 2.12. It should be noted that there are multiple connecting ears 2.12 in this application, and auxiliary support can be added according to support needs. The other end of the hydraulic support rod 3 is provided with a foot plate supported on the ground, and is connected to the hydraulic station 1.6 to achieve its extension and retraction, so as to support the retaining wall 2, improve construction safety and support adjustment convenience.

[0054] In addition, an exhaust hole 2.21 is provided on the plate surface of the retaining wall top plate 2.2. When the mine exit tunnel at the bottom of the mine room is blocked, the filling hole and the exhaust hole 2.21 on the retaining wall top plate 2.2 can be used as the outlet of the filter pipe to control the seepage water inside the mine room and the water exuded from the filling mortar. When the rock drilling tunnel above the mine room is blocked, the filling pipe is inserted into the filling hole to transport mortar to the empty area, and the exhaust pipe is inserted into the exhaust hole to exhaust the air in the mine room.

[0055] In addition, an observation door 2.11 is provided on the middle plate 2.1 of the retaining wall. During the roof connection operation, personnel enter the empty area of ​​the mine room through the observation hole to carry out pipe laying and installation, thereby improving the convenience of construction.

[0056] In addition, by using the above-mentioned propulsion airbag steel structure to fill the retaining wall structure, the present application also provides a method for filling a mine tunnel for blocking, which specifically includes the following steps:

[0057] In the first step, the installation vehicle 1 is connected to the retaining wall 2, and the retaining wall 2 is moved to the tunnel to be filled and blocked by the installation vehicle 1. The tunnel is preferably blocked at a position where the inner wall of the tunnel is regular. The installation vehicle 1 is used to calibrate the retaining wall 2 to a reasonable position in the tunnel, ensuring that the edges of the airbags 2.4 are pressed against the tunnel wall after inflation, and there is a certain pressure.

[0058] Preferably, since the installation vehicle 1 is provided with a top foot hydraulic support 1.4 and a bottom foot hydraulic support 1.3, the top foot hydraulic support 1.4 can be pressed against the top of the tunnel during construction, and cooperate with the bottom foot hydraulic support 1.3 to fix the installation vehicle 1, and the height of the installation vehicle can be adjusted by the top foot hydraulic support 1.4 and the bottom foot hydraulic support 1.3, so the height of the retaining wall 2 can also be conveniently adjusted, and the verticality of the retaining wall 2 and the tunnel floor can be adjusted.

[0059] The second step is to control the extension of the propulsion hydraulic cylinder 2.5 through the hydraulic station 1.6, and to propel them one by one in the order of the upper part first, then the left side, and finally the right side, until the outer edge of the retaining wall top plate 2.2 and the outer edge of the retaining wall side plate 2.3 are 20 cm away from the roadway, then the propulsion is stopped and the hydraulic propulsion rod is locked and fixed;

[0060] The third step is to inflate the airbags 2.4 through the air pressure station 1.5, and inflate them one by one in the order of the upper part first, then the left side and finally the right side. After the airbags come into contact with the inner wall of the tunnel, the air pressure of the four airbags is maintained at 0.5MPa. This pressure is maintained while achieving sealing to ensure that the airbags will not be damaged.

[0061] The fourth step is to disengage the connection ear 2.12 from the connection end 1.11, so as to realize the disengagement and removal of the installation vehicle 1 from the retaining wall 2 and complete the blocking of the lane.

[0062] In addition, in order to further improve the installation stability of the retaining wall 2 after the installation vehicle 1 is separated, a hydraulic support rod 3 is provided on the outside of the retaining wall 2. The hydraulic support rod 3 is supported obliquely, and the bottom end is ensured to be firmly attached to the ground, thereby avoiding the tipping of the retaining wall 2 and improving the construction safety.

[0063] In addition, it should be noted that the installation vehicle 1 in the present application can be used in conjunction with multiple retaining walls 2, so that after a retaining wall 2 is implemented to block a tunnel, the installation vehicle can detach from the retaining wall 2, transport and install the next retaining wall 2, and perform the same blocking operation on the next tunnel. Therefore, it can effectively improve construction efficiency, reduce labor, and is suitable for use in underground space construction.

[0064] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A movable propulsion airbag steel structure filling retaining wall, comprising The installation vehicle (1) specifically comprises a vehicle frame (1.1), wherein wheels (1.2) for the installation vehicle (1) to travel are arranged at the bottom of the vehicle frame (1.1); a connection end (1.11) is arranged at the front end of the vehicle frame (1.1), and an air pressure station (1.5) and a hydraulic station (1.6) are respectively arranged on the installation vehicle (1); The retaining wall (2) specifically comprises a retaining wall middle plate (2.1), a retaining wall top plate (2.2) and a retaining wall side plate (2.3), wherein the retaining wall top plate (2.2) is connected to the top of the retaining wall middle plate (2.1) via a top connecting rubber (2.6), and the retaining wall side plate (2.3) is composed of two pieces, which are respectively connected to both sides of the retaining wall middle plate (2.1) via side end connecting rubbers (2.7), wherein: A propulsion hydraulic cylinder (2.5) is installed between the retaining wall middle plate (2.1) and the retaining wall top plate (2.2), and between the retaining wall middle plate (2.1) and the retaining wall side plate (2.3). The propulsion hydraulic cylinder (2.5) is connected to the hydraulic station (1.6), and the extension and retraction of the propulsion hydraulic cylinder (2.5) is achieved through a control valve on the hydraulic station (1.6), so that the retaining wall top plate (2.2) and the retaining wall side plate (2.3) can be extended to the outside of the retaining wall (2); an air bag (2.4) is arranged on the bottom of the retaining wall middle plate (2.1), the top of the retaining wall top plate (2.2) and the outside formed by the retaining wall side plate (2.3), and the air bag (2.4) is connected to the air pressure station (1.5) and the contraction or expansion of the air bag (2.4) can be controlled by a control valve on the air pressure station (1.5); A connecting ear (2.12) is provided on the retaining wall middle plate (2.1), and the connecting ear (2.12) is connected to the connecting end (1.11), and is characterized in that the front end of the connecting end (1.1) is an upwardly bent plate, and a slot is provided at the bottom of the connecting ear (2.12), and the bent plate can be inserted into the slot from the bottom.

2. A movable propulsion airbag steel structure filling retaining wall as claimed in claim 1, characterized in that: A foot hydraulic support (1.3) is provided at the bottom of the vehicle frame (1.1); the foot hydraulic support (1.3) is connected to the hydraulic station (1.6) and is retracted and extended through a control valve so as to adjust the height of the installation vehicle and support the installation vehicle (1).

3. A movable propulsion airbag steel structure filling retaining wall as claimed in claim 2, characterized in that: A top foot hydraulic support (1.4) is provided on the top of the vehicle frame (1.1), connected to the hydraulic station (1.6) and extended and retracted through a control valve, capable of pressing against the top of the tunnel and cooperating with the bottom foot hydraulic support (1.3) to fix the installation vehicle (1).

4. A movable propulsion airbag steel structure filling retaining wall as claimed in claim 1, characterized in that: A dovetail groove or a T-shaped groove is provided on the top of the retaining wall side plate (2.3); one end of the side end connecting rubber (2.7) is slidably connected to the dovetail groove or the T-shaped groove, and the other end is fixedly connected to the retaining wall top plate (2.2).

5. The movable propulsion airbag steel structure filling retaining wall as claimed in claim 1, characterized in that: The connecting ear (2.12) is hinged to the connecting end (1.11) via a latch (2.13).

6. The movable propulsion airbag steel structure filling retaining wall as claimed in claim 1, characterized in that: Insert rings are provided on the plate surface sides of the retaining wall middle plate (2.1), the retaining wall top plate (2.2) and the retaining wall side plates (2.3), and auxiliary support pins parallel to the propulsion hydraulic cylinder (2.5) are inserted into the corresponding insert rings between the retaining wall middle plate (2.1) and the retaining wall top plate (2.2) and the corresponding insert rings between the retaining wall middle plate (2.1) and the retaining wall side plates (2.3).

7. The movable propulsion airbag steel structure filling retaining wall as claimed in claim 1, characterized in that: It also comprises a hydraulic support rod (3), one end of which is hinged on the connecting ear (2.12), the other end of which is provided with a foot plate supported on the ground, and is connected to the hydraulic station (1.6) to achieve its extension and retraction, thereby supporting the retaining wall (2).

8. The movable propulsion airbag steel structure filling retaining wall as claimed in claim 1, characterized in that: An exhaust hole (2.21) is provided on the plate surface of the retaining wall top plate (2.2).

9. A construction method, using the movable propelled airbag steel structure filling retaining wall in any one of claims 1 to 8 to fill and block a mine tunnel, characterized in that: S1. Connect the installation vehicle (1) to the retaining wall (2), move the retaining wall (2) to the tunnel to be filled and blocked by the installation vehicle (1), and calibrate the retaining wall (2) to a reasonable position in the tunnel, ensuring that the edges of the airbag (2.4) can be pressed against the tunnel wall after inflation; S2. Control the extension of the propulsion hydraulic cylinder (2.5) through the hydraulic station (1.6), and push them one by one in the order of the upper part first, then the left side, and finally the right side, until the outer edge of the retaining wall top plate (2.2) and the outer edge of the retaining wall side plate (2.3) are 20 cm away from the tunnel wall, stop pushing, and lock the hydraulic propulsion rod; S3. The airbags (2.4) are inflated by controlling the air pressure station (1.5), and are inflated one by one in the order of the upper part first, the left side, and finally the right side. After the airbags come into contact with the inner wall of the tunnel, the four airbags are inflated and the pressure is controlled at the same time, so that the airbags (2.4) come into contact with the tunnel wall; S4. The connecting ear (2.12) is separated from the connecting end (1.11), so as to achieve the separation and disassembly of the installation vehicle (1) and the retaining wall (2), and complete the blocking of the tunnel.

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