Rock burst prevention flexible supporting device for tunnel construction and supporting method of rock burst prevention flexible supporting device

Abstract

The invention discloses an anti-rockburst flexible supporting device for tunnel construction and a supporting method of the anti-rockburst flexible supporting device, and relates to the technical field of tunnel supporting. The device comprises two pieces of I-shaped steel arranged at the bottom, two arc-shaped beams are fixedly connected between the two pieces of I-shaped steel, the two arc-shaped beams are located at the two ends of the I-shaped steel respectively, a plurality of transverse plates are fixedly connected between the two arc-shaped beams, guide rails are fixedly connected to the circumferential outer walls of the arc-shaped beams, and an outer blocking mechanism is arranged between the two guide rails; the outer blocking mechanism comprises two rubber plates. The installation efficiency can be improved, the manual labor amount can be reduced, the installation safety of the spring net can be improved, meanwhile, shock waves generated during rock burst can be blocked through a glass fiber layer and a foam plate, the energy of the shock waves is reduced, damage to constructors is reduced, the spring net can be pushed, and the safety of the constructors is improved. Stone mingled in gaps of the spring net falls off, and the shielding and buffering effects of the spring net are prevented from being affected.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel support, and in particular relates to a tunnel construction rock burst prevention flexible support device and a support method thereof. Background Art

[0002] Tunnel rockburst refers to the phenomenon that during the tunnel construction process, the elastic deformation potential accumulated inside the rock mass is suddenly and violently released under certain conditions, causing the rock to burst and eject. This is a more violent rock destruction process, which is more harmful to people and equipment than tunnel collapse. Therefore, during the construction process, support devices are needed to protect the workers.

[0003] When the existing support device is used, an elastic net is usually installed on the outside to cushion the broken rocks. However, due to the large size of the device, when installing or removing the elastic net, manual operation is required on the top of the device, which increases the danger of the work. Therefore, a tunnel construction rock burst prevention flexible support device and support method thereof are proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a tunnel construction rock burst prevention flexible support device and a support method thereof, which utilizes a take-up wheel to curl a pull rope, thereby driving a rubber plate and a spring net to reset, thereby improving installation efficiency, reducing manual labor, avoiding workers from climbing to the top of the device, and improving the safety of spring net installation. At the same time, a glass fiber layer and a foam board can be used to block the shock wave generated during rock burst, reduce the energy of the shock wave, and reduce damage to construction workers. The spring net can also be pushed to make stones mixed in the gaps of the spring net fall, thereby avoiding affecting the shielding and buffering effects of the spring net, thereby solving the existing technical problems.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A flexible support device for preventing rock burst in tunnel construction, comprising:

[0007] Two I-shaped steels are arranged at the bottom, two arc-shaped beams are fixedly connected between the two I-shaped steels, the two arc-shaped beams are respectively located at the two ends of the I-shaped steels, a plurality of cross plates are fixedly connected between the two arc-shaped beams, the circumferential outer walls of the arc-shaped beams are fixedly connected with guide rails, and an external stop mechanism is arranged between the two guide rails;

[0008] The outer stop mechanism comprises two rubber plates, the two rubber plates are respectively slidably connected in the guide rails, and a spring net is fixedly connected between the two rubber plates;

[0009] Both ends of one of the I-shaped steels are fixedly connected with an L-shaped first mounting seat, two guide wheels are rotatably connected in the first mounting seat, a through-going wire take-up shaft is rotatably connected between the two first mounting seats, two wire take-up wheels are fixedly connected to the circumference of the wire take-up shaft, and a pull rope is wound around the circumference of the wire take-up wheel, and the two pull ropes are respectively passed around the guide wheels and guide rails on both sides and are respectively fixed to the rubber plate, and the pull rope is curled by the wire take-up wheel to drive the rubber plate and the spring net to reset, thereby improving the efficiency of installation, reducing the amount of manual labor, avoiding the staff from climbing to the top of the device, and improving the safety of the spring net installation;

[0010] The inner blocking mechanism is arranged between the two arc-shaped beams to shield the shock wave generated by small gravel and rock burst at the tunnel top.

[0011] Furthermore, the inner blocking mechanism includes a plurality of arc-shaped first steel bars, the first steel bars are fixed between two I-shaped steels, a plurality of second steel bars are tied between the first steel bars, a concrete layer is laid between the first steel bars and the second steel bars, a glass fiber layer is laid on the outer wall of the concrete layer, a foam board is laid on the outer wall of the glass fiber layer, and a rubber sheet is laid on the outer wall of the foam board. The glass fiber layer and the foam board can block the shock wave generated during the rock burst, reduce the energy of the shock wave, and reduce the harm to the construction workers.

[0012] Furthermore, a walking mechanism is installed at the bottom of the I-shaped steel, and the walking mechanism includes a second mounting seat, the second mounting seat is fixed to the bottom of the I-shaped steel, two rotating shafts are rotatably connected in the second mounting seat, and the circumference of the rotating shaft is fixedly connected to a walking wheel, and one side of the second mounting seat is fixedly connected to a first motor, and one end of the output shaft of the first motor is fixed to one of the rotating shafts.

[0013] Furthermore, the walking mechanism also includes a steering assembly, which includes a steering shaft, which is rotatably connected to the bottom of the I-shaped steel and passes through the I-shaped steel. The bottom of the steering shaft is fixedly connected to a rotating seat, and a steering wheel is rotatably connected in the rotating seat.

[0014] Furthermore, a second worm gear is fixedly connected to the top of the steering shaft, a second worm is rotatably connected to one side of the I-shaped steel, and the second worm is meshed with the second worm gear.

[0015] Furthermore, a plane bearing is provided on the circumference of the steering shaft, and the plane bearing is located between the I-shaped steel and the rotating seat.

[0016] Furthermore, one side of one of the I-shaped steels is fixedly connected to a fixing frame, the take-up shaft rotates and passes through the fixing frame, the circumference of the take-up shaft is fixedly connected to a first worm gear, the top of the fixing frame is rotatably connected to a first worm that passes through, the first worm gear is meshed with the first worm gear, and the bottom of the fixing frame is fixedly connected to a second motor, and one end of the output shaft of the second motor is fixed to the first worm gear.

[0017] Furthermore, one side of the I-shaped steel is fixedly connected with a mounting plate, and the surface of the mounting plate is rotatably connected with two penetrating drive shafts, a steel wire is fixedly connected between the two opposite drive shafts, and the circumference of the steel wire is fixedly connected with a plurality of eccentrically arranged push plates, and the push plates are located between the rubber sheet and the spring net, and one side of the I-shaped steel is fixedly connected with two guide blocks, and the tops of the two guide blocks are slidably connected with the same slide plate, and one side of the slide plate is fixedly connected with two racks, and the bottoms of the two drive shafts are fixedly connected with gears, and the two gears are respectively meshed with the two racks, and the bottom of the slide plate is fixedly connected with an extension rod, one end of one of the rotating shafts is fixedly connected with an eccentric wheel, and the eccentric wheel is located on one side of the extension rod, and a spring is fixedly connected between one of the guide blocks and the slide plate, and the combination of the steel wire rope and the push plate enables the push plate to rotate when the steel wire rope rotates, and the spring net is pushed by the push plate, so that stones mixed in the gaps of the spring net fall down, thereby avoiding affecting the shielding and buffering effect of the spring net.

[0018] The present invention also provides a supporting method of a tunnel construction rock burst prevention flexible supporting device, comprising the following steps:

[0019] S1: Move the device to the support position, use the spring net to block and buffer the large rocks generated by rock burst, and use the rubber sheet to block the small rocks to avoid damage to the foam board below. At the same time, use the foam board and glass fiber layer to block the shock wave generated by the rock burst, reduce the energy of the shock wave, and reduce the harm to the construction workers. At the same time, the first steel bar, the second steel bar and the concrete layer of the inner layer increase the strength of the device, prevent the device from being crushed by large falling rocks, and increase the safety of use;

[0020] S1: When the device needs to be moved, the first motor is started, and the first motor drives one of the walking wheels to rotate, so that the device moves forward. When the device needs to turn, the second worm is rotated, and the second worm drives the steering shaft to rotate through the second worm gear, and the steering shaft drives the rotating seat to rotate, thereby changing the walking direction of the device for easy use;

[0021] S3: When the walking wheel rotates, it drives the eccentric wheel to rotate, and the eccentric wheel pushes the slide plate to move through the extension rod, and the slide plate drives the rack to move. Under the action of the gear, the drive shaft rotates, and the drive shaft drives the wire rope to rotate, and then the push plate rotates, and the push plate pushes the spring net, so that the stones mixed in the gap of the spring net fall down, avoiding affecting the shielding and buffering effect of the spring net;

[0022] S4: After use, when the outer spring net needs to be replaced or cleaned, start the second motor, the second motor drives the take-up shaft to rotate through the first worm and the first worm gear, the take-up shaft drives the take-up wheel to rotate, and then pulls the rubber plate, and then pulls the rubber plate and the spring net out of the guide rail. After the spring net is cleaned or replaced, the take-up wheel is used to curl the pull rope, and then the rubber plate and the spring net are reset, which improves the efficiency of installation, reduces manual labor, avoids workers climbing to the top of the device, and improves the safety of use.

[0023] The embodiments of the present invention have the following beneficial effects:

[0024] In the present invention, by installing the spring net in the guide rail, the take-up wheel is used to curl the pull rope, thereby driving the rubber plate and the spring net to reset, thereby improving the efficiency of installation, reducing manual labor, avoiding workers from climbing to the top of the device, and improving the safety of spring net installation.

[0025] In the present invention, the glass fiber layer and the foam board are used in combination, so that the shock wave generated during rock burst can be blocked by the glass fiber layer and the foam board, the energy of the shock wave can be reduced, and the harm to construction workers can be reduced.

[0026] In the present invention, by using the steel wire rope and the push plate in combination, when the steel wire rope rotates, the push plate can rotate, and the spring net is pushed by the push plate, so that stones sandwiched in the gaps of the spring net fall down, avoiding affecting the shielding and buffering effects of the spring net.

[0027] The present invention utilizes the take-up wheel to curl the pull rope, thereby driving the rubber plate and the spring net to reset, thereby improving the efficiency of installation, reducing the amount of manual labor, avoiding workers from climbing to the top of the device, and improving the safety of the spring net installation. At the same time, the glass fiber layer and the foam board can be used to block the shock wave generated during the rock burst, reduce the energy of the shock wave, and reduce the harm to the construction workers. The spring net can also be pushed to make the stones sandwiched in the gaps of the spring net fall, thereby avoiding affecting the shielding and buffering effects of the spring net.

[0028] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0030] Figure 1 A schematic diagram of a three-dimensional structure of an embodiment of the present invention;

[0031] Figure 2 It is a cross-sectional structural schematic diagram of an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the enlarged structure of point A according to an embodiment of the present invention;

[0033] Figure 4 It is a schematic diagram of the side structure of an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the enlarged structure of point B according to an embodiment of the present invention;

[0035] Figure 6 It is a schematic diagram of a local structure of an embodiment of the present invention;

[0036] Figure 7 It is a schematic diagram of the enlarged structure of point C according to an embodiment of the present invention.

[0037] In the figure: 1, I-shaped steel; 101, curved beam; 2, guide rail; 3, rubber sheet; 4, spring net; 5, pull rope; 6, cross plate; 7, first steel bar; 8, second steel bar; 9, concrete layer; 10, glass fiber layer; 11, foam board; 12, rubber sheet; 13, first mounting seat; 14, guide wheel; 15, take-up wheel; 16, first motor; 17, second mounting seat; 18, rotating shaft; 19, walking wheel; 20 , drive shaft; 21, steel wire; 22, push plate; 23, guide block; 24, slide plate; 25, spring; 26, rack; 27, gear; 28, mounting plate; 29, eccentric wheel; 30, extension rod; 31, take-up shaft; 32, fixed frame; 33, first worm wheel; 34, first worm; 35, second motor; 36, steering shaft; 37, rotating seat; 38, steering wheel; 39, second worm wheel; 40, second worm. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0041] Embodiment 1

[0042] See also Figure 1-Figure 7 As shown, in this embodiment, a tunnel construction rock burst prevention flexible support device is provided, including: two I-shaped steels 1 arranged at the bottom, two arc-shaped beams 101 are fixedly connected between the two I-shaped steels 1, the two arc-shaped beams 101 are respectively located at both ends of the I-shaped steel 1, a plurality of cross plates 6 are fixedly connected between the two arc-shaped beams 101, the cross plates 6 are connected to the arc-shaped beams 101, and the bearing capacity of the device is increased, the circumferential outer walls of the arc-shaped beams 101 are fixedly connected with guide rails 2, and an external retaining mechanism is arranged between the two guide rails 2;

[0043] The outer blocking mechanism includes two rubber plates 3, which are respectively slidably connected in the guide rail 2, and a spring net 4 is fixedly connected between the two rubber plates 3. The spring net 4 is used to block and buffer the large rocks generated during rock burst to avoid impacting the device, thereby improving the safety of use;

[0044] Both ends of one of the I-shaped steels 1 are fixedly connected with an L-shaped first mounting seat 13, and two guide wheels 14 are rotatably connected in the first mounting seat 13. A through-going wire take-up shaft 31 is rotatably connected between the two first mounting seats 13, and two wire take-up wheels 15 are fixedly connected to the circumference of the wire take-up shaft 31. A pull rope 5 is wound around the circumference of the wire take-up wheel 15. The two pull ropes 5 are respectively passed around the guide wheels 14 and the guide rails 2 on both sides and are respectively fixed to the rubber sheet 3. The pull rope 5 is curled by the wire take-up wheel 15, and then the rubber sheet 3 and the spring net 4 are driven to enter the top of the device, thereby improving the efficiency of installation, reducing the amount of manual labor, avoiding the staff from climbing to the top of the device, and improving the safety of use;

[0045] The inner blocking mechanism is arranged between the two arc-shaped beams 101 to shield the shock waves generated by small gravel and rock burst on the tunnel top.

[0046] Embodiment 2

[0047] Improved on the basis of embodiment 1: Refer to attached Figure 1-Figure 7A flexible support device for preventing rock burst in tunnel construction, wherein the inner retaining mechanism comprises a plurality of arc-shaped first steel bars 7, the first steel bars 7 being fixed between two I-shaped steels 1, a plurality of second steel bars 8 being tied between the first steel bars 7, a concrete layer 9 being laid between the first steel bars 7 and the second steel bars 8, the first steel bars 7, the second steel bars 8 and the concrete layer 9 increasing the strength of the device, preventing the device from being crushed by large falling rocks, and increasing the safety of use, a glass fiber layer 10 being laid on the outer wall of the concrete layer 9, a foam board 11 being laid on the outer wall of the glass fiber layer 10, a rubber sheet 12 being laid on the outer wall of the foam board 11, the foam board 11 and the glass fiber layer 10 being used to block the shock wave generated during the rock burst, thereby reducing the energy of the shock wave and reducing the harm to the construction personnel.

[0048] In the present invention, a walking mechanism is installed at the bottom of the I-shaped steel 1, and the walking mechanism includes a second mounting seat 17, the second mounting seat 17 is fixed at the bottom of the I-shaped steel 1, two rotating shafts 18 are rotatably connected in the second mounting seat 17, and the circumference of the rotating shaft 18 is fixedly connected to a walking wheel 19, and one side of the second mounting seat 17 is fixedly connected to a first motor 16, one end of the output shaft of the first motor 16 is fixed to one of the rotating shafts 18, and the first motor 16 is started, and the first motor 16 drives one of the walking wheels 19 to rotate, thereby making the device move forward.

[0049] In particular, the walking mechanism also includes a steering assembly, which includes a steering shaft 36, which is rotatably connected to the bottom of the I-shaped steel 1 and passes through the I-shaped steel 1, and the bottom of the steering shaft 36 is fixedly connected to a rotating seat 37, and a steering wheel 38 is rotatably connected in the rotating seat 37, and the top of the steering shaft 36 is fixedly connected to a second worm gear 39, and one side of the I-shaped steel 1 is rotatably connected to a second worm 40, which is meshed with the second worm gear 39. When the second worm 40 is rotated, the second worm 40 drives the steering shaft 36 to rotate through the second worm gear 39, and the steering shaft 36 drives the rotating seat 37 to rotate, thereby changing the walking direction of the device for easy use.

[0050] It should be noted that a plane bearing is provided on the circumference of the steering shaft 36 , and the plane bearing is located between the I-shaped steel 1 and the rotating seat 37 , and the plane bearing increases the stability of the rotating seat 37 in use.

[0051] In the present invention, a fixing frame 32 is fixedly connected to one side of one of the I-shaped steels 1, and a take-up shaft 31 rotates and passes through the fixing frame 32. A first worm gear 33 is fixedly connected to the circumference of the take-up shaft 31, and a first worm 34 is rotatably connected to and passes through the top of the fixing frame 32. The first worm 34 meshes with the first worm gear 33, and a second motor 35 is fixedly connected to the bottom of the fixing frame 32. One end of the output shaft of the second motor 35 is fixed to the first worm 34. The second motor 35 drives the take-up shaft 31 to rotate through the first worm 34 and the first worm gear 33, and the take-up shaft 31 drives the take-up wheel 15 to rotate, thereby being able to pull the rubber sheet 3 and the spring net 4.

[0052] In particular, one side of the I-shaped steel 1 is fixedly connected with a mounting plate 28, and the surface of the mounting plate 28 is rotatably connected with two penetrating drive shafts 20, and a steel wire 21 is fixedly connected between the two opposite drive shafts 20, and the circumference of the steel wire 21 is fixedly connected with a plurality of eccentrically arranged push plates 22, and the push plates 22 are located between the rubber sheet 12 and the spring net 4. The push plates 22 can push the spring net 4 when they rotate, so that the stones mixed in the gaps of the spring net 4 fall, so as to avoid affecting the shielding and buffering effect of the spring net 4, and one side of the I-shaped steel 1 is fixedly connected with two guide blocks 23, and the tops of the two guide blocks 23 are slidably connected with the same slide plate 24, and one side of the slide plate 24 is fixed Two racks 26 are connected, wherein the bottoms of the two drive shafts 20 are fixedly connected with gears 27, and the two gears 27 are respectively meshed with the two racks 26. An extension rod 30 is fixedly connected to the bottom of the slide plate 24, and one end of one of the rotating shafts 18 is fixedly connected with an eccentric wheel 29, and the eccentric wheel 29 is located on one side of the extension rod 30. When the eccentric wheel 29 rotates, the eccentric wheel 29 pushes the slide plate 24 to move through the extension rod 30, and the slide plate 24 drives the racks 26 to move. Under the action of the gear 27, the drive shaft 20 rotates, and the drive shaft 20 drives the wire rope 21 to rotate. A spring 25 is fixedly connected between one of the guide blocks 23 and the slide plate 24, and the spring 25 is used to reset the slide plate 24.

[0053] The present invention also provides a supporting method of a tunnel construction rock burst prevention flexible supporting device, comprising the following steps:

[0054] S1: Move the device to the supporting position, use the spring net 4 to block and buffer the large rocks generated during rock burst, and the small rocks are blocked by the rubber sheet 12 to avoid damage to the foam board 11 below. At the same time, the foam board 11 and the glass fiber layer 10 are used to block the shock wave generated during rock burst, reduce the energy of the shock wave, and reduce the harm to the construction personnel. At the same time, the first steel bar 7, the second steel bar 8 and the concrete layer 9 of the inner layer increase the strength of the device, prevent the device from being crushed by large falling rocks, and increase the safety of use;

[0055] S2: When the device needs to be moved, the first motor 16 is started, and the first motor 16 drives one of the walking wheels 19 to rotate, so that the device moves forward. When the device needs to turn, the second worm 40 is rotated, and the second worm 40 drives the steering shaft 36 to rotate through the second worm gear 39, and the steering shaft 36 drives the rotating seat 37 to rotate, thereby changing the walking direction of the device for easy use;

[0056] S3: When the walking wheel 19 rotates, the eccentric wheel 29 is driven to rotate, and the eccentric wheel 29 pushes the slide plate 24 to move through the extension rod 30, and the slide plate 24 drives the rack 26 to move. Under the action of the gear 27, the drive shaft 20 is rotated, and the drive shaft 20 drives the wire rope 21 to rotate, and then the push plate 22 is rotated, and the push plate 22 pushes the spring net 4, so that the stones mixed in the gap of the spring net 4 fall down, so as to avoid affecting the shielding and buffering effect of the spring net 4;

[0057] S4: After use, when the outer layer of the spring net 4 needs to be replaced or cleaned, start the second motor 35, the second motor 35 drives the take-up shaft 31 to rotate through the first worm 34 and the first worm gear 33, the take-up shaft 31 drives the take-up wheel 15 to rotate, and then pulls the rubber plate 3, and then pulls the rubber plate 3 and the spring net 4 out of the guide rail 2. After the spring net 4 is cleaned or replaced, the take-up wheel 15 is used to curl the pull rope 5, and then drives the rubber plate 3 and the spring net 4 to reset, thereby improving the efficiency of installation, reducing manual labor, avoiding staff from climbing to the top of the device, and improving the safety of use.

[0058] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A flexible support device for preventing rock burst in tunnel construction, characterized in that: include: Two I-shaped steels (1) are arranged at the bottom, two arc-shaped beams (101) are fixedly connected between the two I-shaped steels (1), the two arc-shaped beams (101) are respectively located at two ends of the I-shaped steel (1), a plurality of transverse plates (6) are fixedly connected between the two arc-shaped beams (101), the circumferential outer walls of the arc-shaped beams (101) are fixedly connected with guide rails (2), and an external stop mechanism is arranged between the two guide rails (2); The outer blocking mechanism comprises two rubber plates (3), the two rubber plates (3) are respectively slidably connected in the guide rails (2), and a spring net (4) is fixedly connected between the two rubber plates (3); Both ends of one of the I-shaped steels (1) are fixedly connected to an L-shaped first mounting seat (13), two guide wheels (14) are rotatably connected inside the first mounting seat (13), a wire take-up shaft (31) is rotatably connected between the two first mounting seats (13), two wire take-up wheels (15) are fixedly connected to the circumference of the wire take-up shaft (31), and a pull rope (5) is wound around the circumference of the wire take-up wheel (15), and the two pull ropes (5) are respectively wound around the guide wheels (14) and the guide rails (2) on both sides and are respectively fixed to the rubber plate (3); An inner blocking mechanism is arranged between two arc-shaped beams (101) and is used to block shock waves generated by small gravel and rock bursts at the top of the tunnel.

2. A tunnel construction rock burst prevention flexible support device as claimed in claim 1, characterized in that: The inner retaining mechanism comprises a plurality of arc-shaped first steel bars (7), the first steel bars (7) being fixed between two I-shaped steels (1), a plurality of second steel bars (8) being tied between the first steel bars (7), a concrete layer (9) being laid between the first steel bars (7) and the second steel bars (8), a glass fiber layer (10) being laid on the outer wall of the concrete layer (9), a foam board (11) being laid on the outer wall of the glass fiber layer (10), and a rubber sheet (12) being laid on the outer wall of the foam board (11).

3. A tunnel construction rock burst prevention flexible support device as claimed in claim 1, characterized in that: A walking mechanism is installed at the bottom of the I-shaped steel (1), and the walking mechanism includes a second mounting seat (17), the second mounting seat (17) is fixed to the bottom of the I-shaped steel (1), two rotating shafts (18) are rotatably connected inside the second mounting seat (17), and the circumference of the rotating shaft (18) is fixedly connected to a walking wheel (19), and one side of the second mounting seat (17) is fixedly connected to a first motor (16), and one end of the output shaft of the first motor (16) is fixed to one of the rotating shafts (18).

4. A tunnel construction rock burst prevention flexible support device as claimed in claim 3, characterized in that: The walking mechanism further comprises a steering assembly, the steering assembly comprising a steering shaft (36), the steering shaft (36) being rotatably connected to the bottom of the I-shaped steel (1) and penetrating the I-shaped steel (1), the bottom of the steering shaft (36) being fixedly connected to a rotating seat (37), and a steering wheel (38) being rotatably connected inside the rotating seat (37).

5. A tunnel construction rock burst prevention flexible support device as claimed in claim 4, characterized in that: A second worm gear (39) is fixedly connected to the top of the steering shaft (36), and a second worm (40) is rotatably connected to one side of the I-shaped steel (1), and the second worm (40) is meshed with the second worm gear (39).

6. A tunnel construction rock burst prevention flexible support device as claimed in claim 4, characterized in that: The circumference of the steering shaft (36) is sleeved with a plane bearing, which is located between the I-shaped steel (1) and the rotating seat (37).

7. A tunnel construction rock burst prevention flexible support device as claimed in claim 1, characterized in that: A fixing frame (32) is fixedly connected to one side of one of the I-shaped steels (1); the take-up shaft (31) rotates and passes through the fixing frame (32); the circumference of the take-up shaft (31) is fixedly connected to a first worm gear (33); the top of the fixing frame (32) is rotatably connected to a first worm (34) passing through; the first worm (34) is meshed with the first worm gear (33); the bottom of the fixing frame (32) is fixedly connected to a second motor (35); one end of an output shaft of the second motor (35) is fixed to the first worm gear (34).

8. The rock burst prevention flexible support device for tunnel construction according to claim 1, characterized in that: One side of the I-shaped steel (1) is fixedly connected with a mounting plate (28), and the surface of the mounting plate (28) is rotatably connected with two penetrating drive shafts (20), a steel wire (21) is fixedly connected between the two opposite drive shafts (20), and the circumference of the steel wire (21) is fixedly connected with a plurality of eccentrically arranged push plates (22), and the push plates (22) are located between the rubber sheet (12) and the spring net (4), and one side of the I-shaped steel (1) is fixedly connected with two guide blocks (23), and the tops of the two guide blocks (23) are slidably connected with the same slide plate. (24), one side of the slide plate (24) is fixedly connected to two racks (26), wherein the bottoms of the two drive shafts (20) are fixedly connected to gears (27), and the two gears (27) are respectively meshed with the two racks (26), the bottom of the slide plate (24) is fixedly connected to an extension rod (30), one end of one of the rotating shafts (18) is fixedly connected to an eccentric wheel (29), and the eccentric wheel (29) is located on one side of the extension rod (30), and a spring (25) is fixedly connected between one of the guide blocks (23) and the slide plate (24).

9. A supporting method for a tunnel construction rock burst prevention flexible supporting device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: The device is moved to a supporting position, and the large rocks generated during rock burst are blocked and buffered by the spring net (4), and the small rocks are blocked by the rubber sheet (12) to avoid damage to the foam board (11) below. At the same time, the foam board (11) and the glass fiber layer (10) are used to block the shock wave generated during rock burst, thereby reducing the energy of the shock wave and the harm to the construction personnel. At the same time, the first steel bar (7), the second steel bar (8) and the concrete layer (9) of the inner layer increase the strength of the device, thereby preventing the device from being crushed by large falling rocks and increasing the safety of use; S2: When the device needs to be moved, the first motor (16) is started, and the first motor (16) drives one of the running wheels (19) to rotate, thereby causing the device to move forward. When the device needs to turn, the second worm (40) is rotated, and the second worm (40) drives the steering shaft (36) to rotate through the second worm gear (39), and the steering shaft (36) drives the rotating seat (37) to rotate, thereby changing the running direction of the device for easy use; S3: When the walking wheel (19) rotates, the eccentric wheel (29) is driven to rotate, and the eccentric wheel (29) pushes the slide plate (24) to move through the extension rod (30), and the slide plate (24) drives the rack (26) to move, and under the action of the gear (27), the driving shaft (20) is rotated, and the driving shaft (20) drives the wire rope (21) to rotate, thereby causing the push plate (22) to rotate, and the push plate (22) pushes the spring net (4), so that the stones mixed in the gap of the spring net (4) fall down, so as to avoid affecting the shielding and buffering effects of the spring net (4); S4: After use, when the outer spring net (4) needs to be replaced or cleaned, the second motor (35) is started, and the second motor (35) drives the take-up shaft (31) to rotate through the first worm (34) and the first worm wheel (33), and the take-up shaft (31) drives the take-up wheel (15) to rotate, and then pulls the rubber plate (3), and then pulls the rubber plate (3) and the spring net (4) out of the guide rail (2). After the spring net (4) is cleaned or replaced, the take-up wheel (15) is used to curl the pull rope (5), and then drives the rubber plate (3) and the spring net (4) to reset, thereby improving the efficiency of installation, reducing the amount of manual labor, avoiding the staff from climbing to the top of the device, and improving the safety of use.

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