Construction method of energy-absorbing ventilation structure for underground mine underground shock wave

Abstract

The application relates to a construction method of an energy-absorbing ventilation structure suitable for underground mine underground shock waves, which comprises frame structures and support skeletons which are oppositely distributed along the ventilation direction of a roadway, the left and right ends of the support skeletons are connected with the surrounding rock of the roadway through detachable connecting pieces; the frame structure comprises a plurality of frame units which are spliced in the cross section of the roadway, each frame unit comprises a splicing frame with a protective cloth laid on one side, the splicing frame is slidably connected with the support skeleton in the front-back direction, and elastic pieces which can deform in the front-back direction are arranged between the splicing frame and the support skeleton. The structure can withstand blasting shock waves, block air flow, and because the frame units can independently move, the interaction between the frame units will not damage the frame structure due to the uneven distribution of the blasting shock wave intensity in the cross section of the roadway; meanwhile, the structure is convenient to assemble and disassemble, the defects of long construction period and high labor cost are solved, the structure can be repeatedly used, the utilization rate is improved, and the cost is reduced.

Description

Technical fields:

[0002] This invention relates to a construction method for energy-absorbing ventilation structures suitable for underground shock waves in underground mines. Background technology:

[0004] Mine ventilation structures are airflow control facilities within a mine ventilation system, used to ensure airflow follows the required production routes, and as devices for guiding, blocking, and regulating airflow. Currently, structures guiding and controlling airflow, as well as those blocking airflow, are primarily constructed using manual bricklaying. However, bricklaying is labor-intensive, has a long construction period (generally 6-10 days), and requires locally sourced materials, resulting in time-consuming and labor-intensive transportation. Furthermore, the underground mining environment leads to high installation costs, complex construction processes, and high expenses. Additionally, these structures are permanent and cannot be dismantled or reused. Summary of the Invention:

[0006] The present invention addresses the problems existing in the prior art. Specifically, the technical problem to be solved by the present invention is to provide a construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves. The design is reasonable, which not only improves the convenience of installation, but also can withstand blast shock waves and block airflow.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a construction method for an energy-absorbing ventilation structure suitable for underground shock waves in underground mines, wherein the construction method is carried out according to the following steps: (1) leveling the ground of the roadway and prying and anchoring the roof of the roadway; (2) installing multiple jacks at equal intervals on the leveled ground, installing vertical support steel pipes on the telescopic rods of the jacks, drilling and installing expansion bolts at corresponding locations on the roof of the roadway, and fitting wooden plugs on the exposed parts of the bolts to connect them to the top of the vertical support steel pipes; (3) starting the jacks to make the vertical support steel pipes press against and fit against the roof of the roadway; (4) vertically installing multiple drilled holes on the vertical support steel pipes at intervals. (5) Make multiple frame units. For each frame unit, the metal mesh is pre-welded to one side of the frame unit. The three-proof cloth is tied to the metal mesh. Some resin glue is applied to the tied area for sealing. Finally, the four corners of the frame unit are fitted onto the corresponding connecting slide rods, and the movement range of the frame is restricted by the screw nut. A spring is fitted onto the connecting slide rod. (6) In the gap between the frame unit and the top of the tunnel wall, the sealing iron plate is installed on the tunnel wall on the same vertical plane as the front side of the frame. The iron plate is then connected to the rubber pad by bolts.

[0008] Furthermore, the structure of the structure includes a frame structure and a supporting skeleton distributed in opposite directions along the ventilation direction of the tunnel. The left and right ends of the supporting skeleton are connected to the surrounding rock of the tunnel through detachable connectors. The frame structure includes multiple frame units spliced ​​together in the cross-section of the tunnel. Each frame unit includes a splicing frame with a protective cloth laid on one side. The splicing frame and the supporting skeleton are slidably connected in the front-back direction. An elastic element that deforms in the front-back direction is provided between the splicing frame and the supporting skeleton.

[0009] Furthermore, the support frame includes multiple horizontal support steel pipes and multiple vertical support steel pipes arranged in a crisscross pattern. The multiple horizontal support steel pipes are spaced apart vertically, and the multiple vertical support steel pipes are spaced apart horizontally. The intersections of the horizontal support steel pipes and the vertical support steel pipes are connected and fixed to each other by snap fasteners.

[0010] Furthermore, each horizontal support steel pipe is equipped with detachable connectors at its left and right ends.

[0011] Furthermore, the detachable connector is an L-shaped connecting plate. The long side of the L-shaped connecting plate has an elongated hole, and the short side of the L-shaped connecting plate has a round hole. The long side of the L-shaped connecting plate is connected to the transverse support steel pipe through a bolt passing through the elongated hole, and the short side of the L-shaped connecting plate is connected to the surrounding rock of the roadway through an expansion bolt passing through the round hole.

[0012] Furthermore, multiple frame units are arranged in multiple rows from top to bottom along the cross-section of the roadway, with each row of frame units corresponding to the positions of two adjacent transverse support steel pipes; the splicing frame of the frame unit is rectangular and ring-shaped, and each of the four corners of the splicing frame is provided with a sliding through hole that runs through the front and back direction. A connecting slide rod slides through the sliding through hole, and the rear end of the connecting slide rod is fixedly connected to the transverse support steel pipe; the elastic element is a spring sleeved on the outside of the connecting slide rod, and the front and rear ends of the spring abut against the splicing frame and the transverse support steel pipe, respectively.

[0013] Furthermore, a limiting nut is screwed onto the front end of the connecting slide rod, and the limiting nut is located on the front side of the splicing frame; the rear end of the connecting slide rod passes through the transverse support steel pipe and is locked and fixed to the transverse support steel pipe by a pair of fastening nuts distributed on the front and rear sides of the transverse support steel pipe.

[0014] Furthermore, the vertical support steel pipe is located behind the horizontal support steel pipe; the buckle includes a pair of semi-annular clamping plates with the opening facing forward, the pair of clamping plates are distributed vertically and are both sleeved on the outside of the vertical support steel pipe, and the left and right ends of the clamping plates are respectively provided with connecting plates; the connecting plates on the same side of the pair of clamping plates are connected to the U-bolts clamped on the horizontal support steel pipe.

[0015] Furthermore, a metal mesh fixed to the splicing frame is provided parallel to the side of the protective cloth, and the protective cloth and the metal mesh are distributed opposite each other in front and behind along the ventilation direction of the tunnel.

[0016] Furthermore, each vertical support steel pipe is equipped with a positioning tray at its lower end; the bottom of the support frame is equipped with a force-feeding device for supplying upward lifting force, the force-feeding device including multiple jacks corresponding to the positions of the multiple vertical support steel pipes, and the telescopic ends of the jacks are connected to the positioning trays corresponding to the positions.

[0017] Compared with the prior art, the present invention has the following effects: The present invention enhances the stability of the roadway, can withstand the blast shock wave, and blocks the airflow. Moreover, because the frame units can move independently, the frame structure will not be damaged by the interaction between the frame units due to the uneven distribution of the blast shock wave intensity in the roadway cross section. At the same time, the structure is easy to assemble and disassemble, solving the disadvantages of long construction period and high labor cost. Furthermore, the structure can be reused, improving utilization rate and reducing cost. Attached image description:

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Enlarged diagram of point A in the diagram;

[0021] Figure 3 yes Figure 1 Enlarged diagram of point B in the image;

[0022] Figure 4 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A partial structural diagram showing the splicing of four adjacent frame units;

[0024] Figure 6 This is a rear view structural diagram of an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the right-side structure according to an embodiment of the present invention;

[0026] Figure 8 yes Figure 7 Enlarged diagram of point C in the diagram;

[0027] Figure 9 This is a top view of the structure of an embodiment of the present invention;

[0028] Figure 10 yes Figure 9 Enlarged diagram of point D in the diagram;

[0029] Figure 11 This is a schematic diagram of sealing the gap between the frame unit and the tunnel wall;

[0030] Figure 12 This is a schematic diagram showing the connection between the tunnel roof and the vertical support steel pipes.

[0031] In the picture:

[0032] 1-Frame structure; 2-Supporting skeleton; 3-Frame unit; 4-Spliced ​​frame; 5-Protective cloth; 6-Elastic element; 7-Horizontal support steel pipe; 8-Vertical support steel pipe; 9-Snap fastener; 10-L-shaped connecting plate; 11-Elongated hole; 12-Round hole; 13-Sliding through hole; 14-Connecting slide rod; 15-Limit nut; 16-Fastening nut; 17-Clamping plate; 18-Connecting plate; 19-U-bolt; 20-Jack; 21-Bolt; 22-Expansion bolt; 23-Tunnel wall; 24-Rubber pad; 26-Wooden plug; 27-Iron plate. Detailed implementation method:

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0036] like Figures 1-12As shown, this invention discloses a construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves. The structure includes a frame structure 1 and a supporting frame 2, which are vertically arranged and relatively distributed front to back along the ventilation direction of the tunnel. The left and right ends of the supporting frame 2 are detachably connected to the surrounding rock of the tunnel via detachable connectors. The frame structure 1 includes multiple frame units 3 spliced ​​together in the tunnel cross-section. Each frame unit 3 includes a splicing frame 4 with a protective cloth 5 laid on one side. Adjacent frame units 3 are spliced ​​together by the splicing frame 4. The splicing frame 4 and the supporting frame 2 are slidably connected in the front-to-back direction. An elastic element 6 that deforms in the front-to-back direction is provided between the splicing frame 4 and the supporting frame 2. The detachable connection between the supporting frame and the surrounding rock of the tunnel enhances the stability of the tunnel, withstands blast shock waves, and blocks airflow. It is also quick to install and easy to insert. The multiple frame units can move independently, preventing damage to the frame structure due to the interaction between frame units caused by uneven distribution of blast shock wave intensity in the tunnel cross-section.

[0037] In this embodiment, as Figure 1 , 6 As shown, the support frame 2 includes multiple horizontal support steel pipes 7 and multiple vertical support steel pipes 8 arranged in a crisscross pattern. The multiple horizontal support steel pipes 7 are arranged at intervals along the vertical direction, and the multiple vertical support steel pipes 8 are arranged at intervals along the horizontal direction. The intersections of the horizontal support steel pipes 7 and the vertical support steel pipes 8 are connected and fixed to each other by buckles 9.

[0038] In this embodiment, each transverse support steel pipe 7 is provided with detachable connectors at its left and right ends. Further, as... Figure 2 As shown, the detachable connector is an L-shaped connecting plate 10. The long side of the L-shaped connecting plate 10 has an elongated hole 11, and the short side of the L-shaped connecting plate 10 has a round hole 12. The long side of the L-shaped connecting plate 10 is connected to the transverse support steel pipe 7 through a bolt 21 that passes through the elongated hole 11, and the short side of the L-shaped connecting plate 10 is connected to the surrounding rock of the roadway through an expansion bolt 22 that passes through the round hole 12.

[0039] In this embodiment, as Figure 4 , 6 As shown, multiple frame units 3 are arranged in multiple rows from top to bottom along the cross-section of the roadway. The shape formed by the multiple rows of frame units 3 is adapted to the cross-sectional shape of the roadway as much as possible. The position of each row of frame units corresponds to the position of the two adjacent transverse support steel pipes.

[0040] In this embodiment, the splicing frame 4 of the frame unit 3 is rectangular and welded from aluminum alloy square tubing. Each of the four corners of the splicing frame 4 has a sliding through hole 13 extending in the front-to-back direction. Figure 4As shown, a connecting slide rod 14 is slidably inserted into the sliding through hole 13, and the rear end of the connecting slide rod 14 is fixedly connected to the transverse support steel pipe 7; the elastic element 6 is a spring sleeved on the outside of the connecting slide rod 14, and the front and rear ends of the spring abut against the splicing frame 4 and the transverse support steel pipe 7 respectively.

[0041] In this embodiment, a limiting nut 15 is screwed to the front end of the connecting slide rod 14, and the limiting nut 15 is located on the front side of the splicing frame 4. By setting the limiting nut, the forward sliding of the frame unit can be limited.

[0042] In this embodiment, the rear end of the connecting slide rod 14 passes through the transverse support steel pipe 7, and a pair of fastening nuts 16 are screwed to the rear end of the connecting slide rod 14. The pair of fastening nuts 16 are distributed on the front and rear sides of the transverse support steel pipe 7, and the rear end of the connecting slide rod 14 is locked and fixed to the transverse support steel pipe 7 by the fastening nuts 16.

[0043] In this embodiment, the vertical support steel pipe 8 is located behind the horizontal support steel pipe 7; as... Figure 3 As shown, the buckle 9 includes a pair of semi-annular clamping plates 17 with their openings facing forward. The pair of clamping plates 17 are distributed vertically and are both sleeved on the outside of the vertical support steel pipe 8. Connecting plates 18 are provided at the left and right ends of the clamping plates 17 respectively. The connecting plates 18 on the same side of the pair of clamping plates 17 are connected to U-bolts 19 that are clamped to the horizontal support steel pipe 7. The U-bolts 19 lock the pair of clamping plates 17 to the horizontal support steel pipe 7, and then the pair of clamping plates 17 hold the vertical support steel pipe 8, thereby achieving a firm connection between the horizontal support steel pipe 7 and the vertical support steel pipe 8 at their intersection.

[0044] In this embodiment, a metal mesh fixed to the splicing frame 4 is arranged parallel to the side of the protective cloth 5. The protective cloth and the metal mesh are distributed opposite each other in front and behind along the ventilation direction of the tunnel. The metal mesh is used to support the protective cloth and prevent it from deforming too much. In another embodiment, the protective cloth is an existing three-proof cloth, which is a mature product that is used for wind protection, fire protection, water protection, and blocking blast shock waves.

[0045] In this embodiment, each vertical support steel pipe 8 is provided with a positioning tray at its lower end. The vertical support steel pipe 8 is inserted into the positioning tray to achieve positioning. The upper end of the vertical support steel pipe 8 is connected to the roof of the roadway.

[0046] In this embodiment, the bottom of the support frame 2 is provided with a force-feeding device for supplying upward lifting force. The force-feeding device includes multiple jacks 20 corresponding to the positions of multiple vertical support steel pipes 8. The telescopic ends of the jacks 20 are connected to the positioning trays corresponding to their positions.

[0047] In this embodiment, the horizontal support steel pipe 7 is made of square steel pipe; the vertical support steel pipe 8 is made of round steel pipe.

[0048] In this embodiment, the top gap between the frame structure 1 and the tunnel wall 23 is sealed by a rubber pad 24. The rubber pad is pressed against the tunnel wall on the front side of the frame structure 1 in the vertical plane by an iron plate 27. The iron plate and the rubber pad are locked to the tunnel wall by bolts.

[0049] In this embodiment, expansion bolts 25 are drilled and installed at the corresponding locations on the tunnel roof. Wooden plugs 26 are then fitted onto the exposed portions of the bolts to connect them to the top of the vertical support steel pipe 8.

[0050] A working method for energy-absorbing ventilation structures applicable to underground mine shock waves includes:

[0051] (1) The blast shock wave in the tunnel is unevenly distributed across the same tunnel cross section;

[0052] (2) Each frame unit initially bears different blast shock waves, blocking the airflow. The compression deformation of the springs sleeved outside the connecting slide rod is different, and each frame unit moves independently to avoid damage caused by displacement difference between frames.

[0053] A construction method for an energy-absorbing ventilation structure suitable for shock waves in underground mines, the construction method comprising the following steps: (1) leveling the roadway surface and prying and anchoring the roadway roof; (2) installing five vertical jacks at equal intervals on the leveled surface, and installing trays on the telescopic rods of the jacks to achieve a reliable connection with the vertical support steel pipes; drilling 20cm deep and 12mm diameter holes at corresponding locations on the roadway roof, and simultaneously drilling 20cm deep holes at heights of 25cm, 50cm, 100cm, and 150cm from the bottom plate, and drilling vertical holes... (3) Drill 12mm diameter holes; (4) Drive 8mm diameter expansion bolts into the five holes in the top plate, and put wooden plugs with a diameter slightly smaller than the inner diameter of the vertical support steel pipe 4cm on the exposed part of the bolts. Put the lower end of the vertical support steel pipe into the upper hole of the tray, put the upper end of the vertical support steel pipe on the wooden plug, start the jack to make the vertical support steel pipe push against the roadway top plate and fit together, and complete the fixing of the vertical rod; (5) Place detachable connectors on the drill holes on both sides of the roadway and fix them with expansion bolts; (6) Ensure that the horizontal support steel pipe is placed horizontally and centered in the roadway and fix it to the detachable connector with bolts. A level can be used to measure whether the horizontal support steel pipe is horizontal; since the size of the long hole for fixing the horizontal support steel pipe on the detachable connector is larger than the size of the bolt, if it is not horizontal, the vertical position of the horizontal support steel pipe on the detachable connector can be adjusted, and finally the horizontal support steel pipe and the vertical support steel pipe are clamped with a buckle; (6) The basic size of the frame unit is 50cm*50cm (its size can be changed according to the site conditions, but attention should be paid to modifying the position of the opening on the horizontal support steel pipe), and it is made of 4cm*4cm galvanized square tube. The metal mesh is welded to one side of the frame unit in advance, the three-proof cloth is tied to the metal mesh, and some resin glue is applied to the binding place for sealing. Finally, the four corners of the frame unit are all put on the corresponding connecting slide rod, and the movement range of the frame is restricted by the screw nut. A spring is put on the connecting slide rod; (7) In the gap between the frame unit and the top of the tunnel wall, the sealing iron plate is installed on the tunnel wall on the same vertical plane as the front side of the frame, and then the iron plate is connected to the rubber pad by bolts.

[0054] During use, the frame units can be installed or disassembled as needed to control the presence and magnitude of airflow within the tunnel. When not in use, the components can be disassembled by lowering the jacks.

[0055] In this embodiment, the vertical support steel pipe is a circular steel pipe, and the horizontal support steel pipe is a square steel pipe, forming the load-bearing structure of the building.

[0056] The advantages of this invention are:

[0057] 1) Not only is the structure compact, but it can also withstand blast shock waves and block airflow. Because the frame units can move independently, the frame structure will not be damaged by the interaction between the frame units due to the uneven distribution of blast shock wave intensity in the roadway cross section.

[0058] 2) The cost is low, which solves the problems of long construction period and high labor cost; in addition, the structure is easy to install and can be reused, which improves utilization rate and reduces cost.

[0059] If this invention discloses or relates to mutually fixedly connected components or structural parts, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured in one piece using a casting process) (except where it is obviously impossible to use an integral molding process).

[0060] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0061] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A construction method for energy-absorbing ventilation structures suitable for underground mine shock waves, characterized in that, The construction method is carried out in the following steps: (1) Level the ground of the roadway and pry the roof of the roadway; (2) Install multiple jacks at equal intervals on the leveled ground, and install vertical support steel pipes on the telescopic rods of the jacks. Drill and install expansion bolts at the corresponding positions on the roof of the roadway, and put wooden plugs on the exposed parts of the bolts to connect them to the top of the vertical support steel pipes; (3) Start the jacks to make the vertical support steel pipes press against the roof of the roadway and fit together; (4) Install multiple horizontal support steel pipes with drilled holes vertically at intervals on the vertical support steel pipes, and connect the vertical support steel pipes and the horizontal support steel pipes with clamps. (5) Make multiple frame units. For each frame unit, weld the metal mesh to one side of the frame unit in advance, tie the three-proof cloth to the metal mesh, apply some resin glue to the binding place to seal it, and finally, put the four corners of the frame unit on the corresponding connecting slide rods and use nuts to restrict the movement range of the frame. Put springs on the connecting slide rods. (6) In the gap between the frame unit and the top of the tunnel wall, install the sealing iron plate on the tunnel wall on the same vertical plane as the front side of the frame, and then connect the iron plate to the rubber pad with bolts. The structure of the structure includes a frame structure and a supporting skeleton distributed in opposite directions along the ventilation direction of the tunnel. The left and right ends of the supporting skeleton are connected to the surrounding rock of the tunnel through detachable connectors. The frame structure includes multiple frame units spliced ​​together in the cross section of the tunnel. Each frame unit includes a splicing frame with a protective cloth laid on one side. The splicing frame and the supporting skeleton are slidably connected in the front-back direction. An elastic element that deforms in the front-back direction is provided between the splicing frame and the supporting skeleton.

2. The construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves according to claim 1, characterized in that: The support frame includes multiple horizontal support steel pipes and multiple vertical support steel pipes arranged in a crisscross pattern. The multiple horizontal support steel pipes are spaced apart vertically, and the multiple vertical support steel pipes are spaced apart horizontally. The intersections of the horizontal support steel pipes and the vertical support steel pipes are connected and fixed to each other by snap fasteners.

3. The construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves according to claim 2, characterized in that: Each horizontal support steel pipe has detachable connectors at both its left and right ends.

4. A construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves according to claim 3, characterized in that: The detachable connector is an L-shaped connecting plate. The long side of the L-shaped connecting plate has an elongated hole, and the short side of the L-shaped connecting plate has a round hole. The long side of the L-shaped connecting plate is connected to the transverse support steel pipe through a bolt passing through the elongated hole, and the short side of the L-shaped connecting plate is connected to the surrounding rock of the roadway through an expansion bolt passing through the round hole.

5. A construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves according to claim 2, characterized in that: Multiple frame units are arranged in multiple rows from top to bottom along the cross-section of the roadway. Each row of frame units corresponds to the position of two adjacent transverse support steel pipes. The splicing frame of the frame unit is rectangular and ring-shaped. Each of the four corners of the splicing frame is provided with a sliding through hole that runs through the front and back direction. A connecting slide rod slides through the sliding through hole. The rear end of the connecting slide rod is fixedly connected to the transverse support steel pipe. The elastic element is a spring sleeved on the outside of the connecting slide rod. The front and rear ends of the spring abut against the splicing frame and the transverse support steel pipe, respectively.

6. A construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves according to claim 5, characterized in that: The front end of the connecting slide rod is screwed with a limiting nut, which is located on the front side of the splicing frame; the rear end of the connecting slide rod passes through the transverse support steel pipe and is locked and fixed to the transverse support steel pipe by a pair of fastening nuts distributed on the front and rear sides of the transverse support steel pipe.

7. A construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves according to claim 2, characterized in that: The vertical support steel pipe is located behind the horizontal support steel pipe; the buckle includes a pair of semi-annular clamping plates with the opening facing forward. The pair of clamping plates are distributed vertically and are both sleeved on the outside of the vertical support steel pipe. The left and right ends of the clamping plates are respectively provided with connecting plates; the connecting plates on the same side of the pair of clamping plates are connected to the U-bolts clamped on the horizontal support steel pipe.

8. A construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves according to claim 1, characterized in that: The protective cloth is provided parallel to the side of the splicing frame with a metal mesh, and the protective cloth and the metal mesh are distributed in opposite directions along the ventilation direction of the tunnel.

9. A construction method for an energy-absorbing ventilation structure suitable for underground mine shock waves according to claim 2, characterized in that: Each vertical support steel pipe is equipped with a positioning tray at its lower end; the bottom of the support frame is equipped with a force-feeding device for supplying upward lifting force, the force-feeding device includes multiple jacks corresponding to the positions of the multiple vertical support steel pipes, and the telescopic ends of the jacks are connected to the positioning trays corresponding to the positions.

Images