A protection trolley for tunnel rock burst section and construction method

Abstract

The application discloses a protection trolley for a tunnel rock burst section and a construction method, and belongs to the field of tunnel construction technology. The trolley body is provided with a first arch frame and a second arch frame on the top of the trolley body, the first arch frame and the second arch frame are parallel to the inner wall of the tunnel, a plurality of first sliding rails are arranged on the first arch frame, a plurality of second sliding rails are arranged on the second arch frame, the first sliding rails and the second sliding rails are arranged along the length direction of the tunnel, an arched protection shed is arranged on the top of the trolley body, the protection shed is slidably arranged on the first sliding rail or the second sliding rail, the protection shed can slide from the first sliding rail to the second sliding rail, and a fixing piece is arranged on the protection shed and used for fixing the protection shed on the first arch frame or the second arch frame. The application has the effect of reducing the safety hazards faced by construction personnel.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, and more specifically to a protective trolley and construction method for rockburst sections in tunnels. Background Technology

[0002] Rockburst is a common geological hazard caused by unloading during underground engineering construction. Also known as rock burst, it occurs when the stress balance of the rock mass is disrupted by human disturbance during tunnel excavation under high ground stress. When the strain energy accumulated in the rock exceeds the energy consumed in rock fracture, the excess energy causes rock fragments to detach and erupt from the rock mass, releasing the accumulated energy as kinetic energy. The conditions for a rockburst are high ground stress in the rock mass exceeding the rock's inherent strength, coupled with good brittleness and elasticity. Under these conditions, once tunnel excavation disrupts the original equilibrium state of the rock mass, the accumulated energy within the rock will cause it to fracture and eject fragmented rock. Tunnel rockbursts are characterized by their randomness, suddenness, and unpredictability. They not only seriously threaten the safety of construction personnel and equipment and affect construction progress but also cause over-excavation, initial support failure, and in severe cases, even induce earthquakes, posing serious safety hazards to tunnel construction.

[0003] Regarding the aforementioned technologies, when construction workers use tunnel construction trolleys to work on rockburst sections of tunnels, the rocks on the tunnel walls may peel off under the action of rockbursts, posing a significant safety hazard to workers operating at the tunnel face. Summary of the Invention

[0004] Therefore, in order to reduce the safety hazards faced by construction workers, this application provides a protective trolley and construction method for rockburst sections of tunnels.

[0005] This invention is implemented as follows: a protective trolley for rockburst sections in tunnels is constructed using the following technical solution, comprising a trolley body, a first arch frame and a second arch frame mounted on the top of the trolley body, both the first and second arch frames being parallel to the inner wall of the tunnel; multiple first slide rails mounted on the first arch frame and multiple second slide rails mounted on the second arch frame; both the first and second slide rails being arranged along the length of the tunnel; an arched protective canopy mounted on the top of the trolley body, the protective canopy being slidably mounted on the first or second slide rails; the protective canopy being able to slide from the first slide rail to the second slide rail; and a fixing member mounted on the protective canopy for fixing the protective canopy to the first or second arch frame.

[0006] By adopting the above technical solution, a first arch frame and a second arch frame are installed on the trolley body. A first slide rail is installed on the first arch frame, and a second slide rail is installed on the second arch frame. The protective canopy is slidably installed on the first or second slide rail, providing shelter and protection for workers located on the trolley body. The protective canopy can be moved from the first slide rail to the second slide rail, so that when workers are drilling at the tunnel construction face, the protective canopy can be moved above the working face to protect the workers. When drilling is completed and other work is carried out on the tunnel roof, the protective canopy can be moved, increasing the working space when working on the tunnel roof, improving the safety factor of workers, and meeting various construction requirements at the tunnel construction site.

[0007] Optionally, the trolley body includes a portal frame and a worktable, with multiple worktables arranged on both sides of the portal frame, and the first arch frame and the second arch frame arranged on the portal frame.

[0008] By adopting the above technical solution, multiple workbenches are installed on both sides of the portal frame. The workbenches facilitate workers to carry out construction operations on them. At the same time, the number of workbenches can be increased or decreased according to different tunnel construction projects to ensure construction space.

[0009] Optionally, a ladder is provided between two adjacent workbenches, and the protective canopy covers the ladder from below.

[0010] By adopting the above technical solutions, the ladder facilitates the operation of personnel getting on and off the trolley, and the protective canopy covers the ladder from below. In the event of a rock burst during tunnel construction, the protective canopy can be moved above the ladder, allowing workers to evacuate under the protection of the canopy, further ensuring construction safety.

[0011] Optionally, a winch is provided on the top of the gantry frame.

[0012] By adopting the above technical solutions, construction equipment and tools can be lifted by a winch, making it easier to move the relevant construction equipment to the top of the portal frame.

[0013] Optionally, the portal frame is provided with portal diagonal bracing.

[0014] By adopting the above technical solution, diagonal braces are installed on the portal frame, which reinforce and support the portal frame, thereby improving the overall structural stability of the trolley body.

[0015] Optionally, the protective canopy is composed of multiple top panels spliced ​​together. The top panels are divided into upper and lower layers, with the upper and lower top panels staggered and adjacent top panels overlapping. The first arch frame is higher than the second arch frame. The first slide rail is located on the inner side of the arch of the first arch frame, and the second slide rail is located on the outer side of the arch of the second arch frame. The upper top panel is slidably connected to the first slide rail, and the lower top panel is slidably connected to the second slide rail.

[0016] By adopting the above technical solution, the protective shed is made of multiple top panels spliced ​​together, with the upper top panel slidingly connected to the first slide rail and the lower top panel slidingly connected to the second slide rail. When driving the protective shed to move between the first arch frame and the second arch frame, the protective shed can be pushed, which facilitates the movement of the protective shed between the first arch frame and the second arch frame.

[0017] Optionally, a groove is provided on the upper top plate along the length of the first arch frame, and a slider is provided on the lower top plate along the length of the groove. The length of the slider is the same as the width of the top plate, and the slider is slidably disposed in the groove. A connector is provided on the protective canopy, and the connector is used to connect two adjacent top plates.

[0018] By adopting the above technical solution, two adjacent top plates are slidably connected through the cooperation of sliders and grooves. Thus, during tunnel construction, according to the on-site construction conditions, moving part of the top plate can open gaps in the protective canopy, which facilitates fixed-point operations on the tunnel inner wall, such as installing anchor bolts, while providing good protection for the surrounding area. The length of the slider is the same as the width of the top plate. When the top plate located on the upper layer moves along the slider, the two ends of the top plate located on the upper layer overlap with the top plate located on the lower layer, so the top plate will not detach during the movement.

[0019] Optionally, the connector includes a spring and a telescopic rod. Both sides of the upper top plate are provided with receiving grooves. The telescopic rod is slidably mounted on the top plate and located in the receiving groove. The spring is located in the receiving groove. One end of the spring is connected to the bottom wall of the receiving groove and the other end is connected to the telescopic rod. The lower top plate is provided with snap-fit ​​holes opposite to the receiving groove.

[0020] By adopting the above technical solution, when moving one of the top plates, the telescopic rod is pressed into the receiving groove, the spring is compressed, and the top plate is moved; when the top plate is installed in place again, the top plate is pushed, and when the top plate moves to the point where the telescopic rod is aligned with the locking hole, the telescopic rod partially moves into the locking hole under the action of the spring, fixing the top plate and preventing the top plate inside the protective canopy from sliding along the arched arc of the protective canopy after the protective canopy is installed in place.

[0021] Optionally, the fastener includes a fixing bolt, and the top plate has a threaded hole. The fixing bolt passes through the top plate and is threadedly connected to the first arch or the second arch.

[0022] By adopting the above technical solution, the fixing bolts pass through the top plate and are threadedly connected to the first arch frame or the second arch frame, thereby fixing the protective shed to the first arch frame or the second arch frame and further improving the structural stability of the protective shed.

[0023] On the other hand, the construction method for a rockburst section in a tunnel provided in this application adopts the following technical solution, including the following steps: S1: Install the first arch frame and the second arch frame onto the trolley body; S2: Slide the protective canopy onto the first arch frame or the second arch frame; S3: When workers are drilling at the tunnel construction face, move the protective canopy above the workers and fix it with fasteners; S4: After drilling is completed, when other operations are carried out at the tunnel construction face, move the protective canopy to increase the working space at the working face.

[0024] The present invention has the following advantages: This application includes at least one of the following beneficial technical effects: 1. A first arch frame and a second arch frame are installed on the trolley body. A first slide rail is installed on the first arch frame, and a second slide rail is installed on the second arch frame. A protective canopy is slidably installed on either the first or second slide rail. The protective canopy provides shelter and protection for workers located on the trolley body. The protective canopy can be moved from the first slide rail to the second slide rail, so that when workers are drilling at the tunnel construction face, the protective canopy can be moved above the working face to protect the workers. After drilling is completed, when other work is carried out on the tunnel roof, the protective canopy can be moved to increase the working space when working on the tunnel roof, improve the safety factor of workers, and meet various construction requirements at the tunnel construction site. 2. The protective canopy is made up of multiple top panels spliced ​​together. The upper top panel is slidably connected to the first slide rail, and the lower top panel is slidably connected to the second slide rail. When driving the protective canopy to move between the first arch frame and the second arch frame, the protective canopy can be pushed, which makes it easy to drive the protective canopy to move between the first arch frame and the second arch frame. 3. The two adjacent top plates are slidably connected by the cooperation of sliders and grooves. During tunnel construction, gaps can be opened on the protective canopy according to the on-site construction conditions, which facilitates the placement of construction equipment and expands the construction space. It also protects the perimeter of the protective canopy and facilitates fixed-point operations on the inner wall of the tunnel, such as installing anchor bolts. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2This is a schematic diagram illustrating the protective shed structure in the embodiments of this application; Figure 3 yes Figure 2 Enlarged view of section A.

[0026] The components include: 1. Trolley body; 11. Gantry frame; 111. Support leg; 112. Adjusting rod; 12. Workbench; 13. Ladder; 14. Winch; 15. Diagonal brace; 2. First arch frame; 21. First slide rail; 3. Second arch frame; 31. Second slide rail; 4. Protective canopy; 41. Top plate; 42. Slide groove; 43. Sliding block; 44. Receiving groove; 45. Snap-fit ​​hole; 51. Spring; 52. Telescopic rod; 6. Fixing bolt. Detailed Implementation

[0027] The following will be combined with the appendix Figures 1-3 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0028] This invention provides, through improvements, a protective trolley for rockburst sections in tunnels, as described herein. Figure 1 and Figure 2 The system includes a trolley body 1, which comprises a portal frame 11 and a worktable 12. Both the portal frame 11 and the worktable 12 are welded from square steel pipes. The worktable 12 is detachably fixed to both sides of the portal frame 11 by bolts. Multiple worktables 12 are installed on both sides of the portal frame 11. Portal frames 11 of different heights and widths and corresponding worktables 12 are selected according to different tunnel sizes. A first arch frame 2 and a second arch frame 3 are installed at the top of the portal frame 11. Both the first arch frame 2 and the second arch frame 3 are connected by two parallel arched rods and are parallel to the tunnel roof. Multiple first slide rails 21 are horizontally installed on the first arch frame 2, with the length direction of the first slide rails 21 parallel to the length direction of the tunnel. Multiple second slide rails 31 are horizontally installed on the second arch frame 3, with the second slide rails 31 parallel to the first slide rails 21. An arched protective canopy 4 is installed on top of the portal frame 11. The protective canopy 4 is parallel to the first arch frame 2 and the second arch frame 3, and is slidably mounted on the first slide rail 21 or the second slide rail 31. The protective canopy 4 can move from the first slide rail 21 to the second slide rail 31. Fixing components are installed on the protective canopy 4 to securely mount it to the first arch frame 2 or the second arch frame 3. Figure 1 In the middle, the protective shed 4 is connected and installed on the second arch frame 3 via the first slide rail 21.

[0029] The protective canopy 4 can be moved from the first slide rail 21 to the second slide rail 31. When workers are drilling at the tunnel construction face, the protective canopy 4 is moved above the tunnel construction face to protect the workers and improve their safety. After drilling is completed and subsequent work is carried out on the tunnel roof, the protective canopy 4 is moved away via the first slide rail 21 and the second slide rail 31, which increases the working space at the construction face and the working space for working on the tunnel roof. This also meets various construction requirements at the tunnel construction site and the placement of construction equipment.

[0030] Reference Figure 1 A ladder 13 is installed between two adjacent workbenches 12, and the width of the protective canopy 4 is greater than the distance between the ladders 13 on both sides of the portal frame 11. Thus, the protective canopy 4 covers the ladders 13 on both sides of the portal frame 11 from below. Workers ascend and descend from the trolley body 1 via the ladders 13, which facilitate climbing. When a rock burst occurs in the tunnel wall, the protective canopy 4 is moved above the ladders 13. Because the protective canopy 4 covers the portal frame 11 from below, it can shield the ladders 13, allowing workers to move along the ladders 13 under its protection. Diagonal braces 15 are also fixedly installed on the portal frame 11, reinforcing and supporting it and improving the overall structural stability of the trolley body 1. A winch 14 is also installed on the top of the portal frame 11, used to lift equipment and materials used during construction onto the portal frame 11.

[0031] Reference Figure 1 and Figure 2 The protective canopy 4 is composed of multiple arched roof panels 41. Each roof panel 41 has two layers, with the upper and lower layers staggered and overlapping. Each upper roof panel 41 rests on one of the two lower roof panels 41. The first arch frame 2 is located behind the tunnel construction direction on the portal frame 11, while the second arch frame 3 is located in front of the tunnel construction direction. The height of the first arch frame 2 is greater than the height of the second arch frame 3, and the height difference between the first arch frame 2 and the second arch frame 3 is the same as the overlap height of the two roof panels 41. Multiple first slide rails 21 are installed at equal intervals on the inner arched wall of the first arch frame 2, and multiple second slide rails 31 are installed at equal intervals on the outer arched wall of the second arch frame 3. The multiple first slide rails 21 correspond to multiple upper roof panels 41 in the protective canopy 4, and the multiple second slide rails 31 correspond to multiple lower roof panels 41 in the protective canopy 4. Multiple upper roof panels 41 in the protective shed 4 are slidably connected to the first slide rail 21, and multiple lower roof panels 41 in the protective shed 4 are slidably connected to the second slide rail 31.

[0032] Reference Figure 2The second arch frame 3 is detachably mounted on the portal frame 11 via support legs 111. An adjusting rod 112 is vertically mounted on the portal frame 11, and multiple pin holes are provided on the adjusting rod 112. The support legs 111 are slidably mounted on the adjusting rod 112, and positioning pins are passed through the support legs 111. The height of the second arch frame 3 can be adjusted by adjusting the positioning relationship between the positioning pins and the multiple pin holes. The first arch frame 2 is welded to the portal frame 11 via connecting rods, and the height of the first arch frame 2 is determined according to the height of the second arch frame 3. The protective canopy 4 is composed of multiple top plates 41 spliced ​​together. The upper top plate 41 is slidably connected to the first slide rail 21, and the lower top plate 41 is slidably connected to the second slide rail 31. When the protective canopy 4 is moved between the first arch frame 2 and the second arch frame 3, the protective canopy 4 is pushed, and the protective canopy 4 slides in conjunction with the first slide rail 21 or the second slide rail 31, thereby changing the position of the protective canopy 4.

[0033] Reference Figure 1 and Figure 2 Each of the upper roof slabs 41 in the protective canopy 4 has a sliding groove 42. The sliding groove 42 is located on the ground-facing side of the roof slab 41 and runs along the length of the first arch frame 2. Two parallel sliding grooves 42 are formed on the roof slab 41. On the lower roof slab 41 in the protective canopy 4, a slider 43 is fixedly installed opposite the sliding groove 42. The slider 43 is located on the ground-facing side of the lower roof slab 41. Both the slider 43 and the sliding groove 42 have a T-shaped cross-section, and the slider 43 is slidably installed within the sliding groove 42. The length of the slider 43 is the same as the width of the roof slab 41, and both ends of the slider 43 are flush with the two sides of the roof slab 41. Connectors are installed on the protective canopy 4 to connect two adjacent roof slabs 41. The two adjacent roof slabs 41 are connected by the sliding connection of the slider 43 and the sliding groove 42. During tunnel construction, some of the roof slabs 41 can be moved according to the on-site construction conditions, forming gaps in the protective canopy 4. Workers can then use these gaps to perform targeted construction on the tunnel inner wall. This increases the construction space for the fixed-point construction section, making it easier for workers to carry out construction. At the same time, the protective shed 4 protects the area around the construction point, making it easier to carry out fixed-point operations such as installing anchor bolts on the inner wall of the tunnel.

[0034] When the protective shed 4 is located on the first arch frame 2, the upper top plate 41 is slidably connected to the first arch frame 2 via the first slide rail 21. At this time, the lower top plate 41 of the protective shed 4 is connected to the upper top plate 41 via the slider 43, preventing the lower top plate 41 from falling off. Adjacent top plates 41 are connected by connectors to prevent multiple lower top plates 41 from moving along the slide groove 42 under the action of gravity. When the protective shed 4 is located on the second arch frame 3, the lower top plate 41 is connected to the second arch frame 3 via the second slide rail 31, and the upper top plate 41 overlaps the lower top plate 41. Adjacent top plates 41 are connected by connectors to prevent the upper top plate 41 from sliding along the slider 43 under the action of gravity.

[0035] Reference Figure 2 and Figure 3 The connecting components include a spring 51 and a telescopic rod 52. A receiving groove 44 is provided on the top plate 41 of the upper layer of the protective shed 4, with each of the four corners of the top plate 41 facing the ground. The telescopic rod 52 is slidably mounted on the top plate 41 and located within the receiving groove 44. The spring 51 is located within the receiving groove 44, with one end fixedly connected to the bottom wall of the receiving groove 44 and the other end fixedly connected to the telescopic rod 52. A snap-fit ​​hole 45 is provided on the top plate 41 of the lower layer of the protective shed 4, directly opposite the receiving groove 44. When the receiving groove 44 and the snap-fit ​​hole 45 are directly opposite each other, the telescopic rod 52 partially moves into the snap-fit ​​hole 45 under the action of the spring 51, connecting and fixing the upper top plate 41 to the lower top plate 41.

[0036] The telescopic design prevents the top plate 41 from moving along the first arch 2 or the second arch 3 under gravity, enhancing the overall structural stability of the protective canopy 4. When it is necessary to move a particular top plate 41, multiple telescopic rods 52 connected to that top plate 41 are pressed into the receiving groove 44 through the locking holes 45, thus moving the top plate 41. It should be noted that when the protective canopy 4 moves onto the first arch 2, only the lower top plate 41 can move; when the protective canopy 4 moves onto the second arch 3, only the upper top plate 41 can move. When workers perform fixed-point operations in the tunnel, such as drilling, loading explosives, or installing anchor bolts, a gap can be opened at the corresponding location in the protective canopy 4 to maximize its protective effect while completing the construction.

[0037] The fasteners include fixing bolts 6, which have threaded holes in the top plate 41. The fixing bolts 6 pass through the top plate 41 and are threadedly connected to the first arch frame 2 or the second arch frame 3. When the protective canopy 4 is installed on the first arch frame 2 via the first slide rail 21, the fixing bolts 6 pass through the first arch frame 2 and are fixedly connected to the top plate 41 of the upper layer of the protective canopy 4; when the protective canopy 4 is located on the second arch frame 3, the fixing bolts 6 pass through the second arch frame 3 and are fixedly connected to the top plate 41 of the lower layer of the protective canopy 4.

[0038] The implementation principle of a protective trolley for rockburst sections in tunnels according to an embodiment of this application is as follows: A first arch frame 2 and a second arch frame 3 are installed on the trolley body 1. A first slide rail 21 is installed on the first arch frame 2, and a second slide rail 31 is installed on the second arch frame 3. A protective canopy 4 can slide and cooperate with the first slide rail 21 and the second slide rail 31. By driving the protective canopy 4 to move between the first slide rail 21 and the second slide rail 31, the position of the protective canopy 4 can be physically connected. When workers are drilling on the tunnel construction face, the protective canopy 4 is moved above the working face to protect the workers. When drilling is completed and other operations are carried out on the tunnel roof, the protective canopy 4 is moved, which increases the working space when working on the tunnel roof, improves the safety factor of workers, and meets various construction requirements at the tunnel construction site.

[0039] This application also discloses a construction method for a rockburst section in a tunnel, including the following steps; S1: The first arch frame 2 and the second arch frame 3 are lifted onto the portal frame 11 by the winch 14, and the first arch frame 2 and the second arch frame 3 are fixedly installed on the trolley body 1; S2: The protective shed 4 is lifted onto the portal frame 11 by the winch 14, and the protective shed 4 is slidably installed on the first slide rail 21 on the first arch frame 2 or on the second slide rail 31 on the second arch frame 3. S3: When workers are drilling, loading explosives, and performing initial support work at the tunnel face, drive the protective canopy 4 to move above the workers and fix the protective canopy 4 with fasteners to shield and protect the workers. S4: After drilling is completed, move the protective canopy 4 away from the working face to increase the working space at the working face on the portal frame 11.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shield trolley for a tunnel rockburst section, comprising a trolley body (1), characterised in that: The top of the trolley body (1) is provided with a first arch frame (2) and a second arch frame (3). The first arch frame (2) and the second arch frame (3) are parallel to the inner wall of the tunnel. The first arch frame (2) is provided with multiple first slide rails (21), and the second arch frame (3) is provided with multiple second slide rails (31). The first slide rails (21) and the second slide rails (31) are both arranged along the length of the tunnel. The top of the trolley body (1) is provided with an arched protective canopy (4). The protective canopy (4) is slidably arranged on the first slide rail (21) or the second slide rail (31). The protective canopy (4) can slide from the first slide rail (21) to the second slide rail (31). The protective canopy (4) is provided with a fixing member. The fixing member is used to fix the protective canopy (4) on the first arch frame (2) or the second arch frame (3). The protective shed (4) is made up of multiple top plates (41) spliced ​​together. The top plates (41) are divided into upper and lower layers. The upper top plate (41) and the lower top plate (41) are staggered and adjacent top plates (41) overlap. The first arch frame (2) is higher than the second arch frame (3). The first slide rail (21) is set on the inner side of the arch of the first arch frame (2), and the second slide rail (31) is set on the outer side of the arch of the second arch frame (3). The upper top plate (41) is slidably connected to the first slide rail (21), and the lower top plate (41) is slidably connected to the second slide rail (31). The upper top plate (41) has a groove (42) along the length of the first arch frame (2), and the lower top plate (41) has a slider (43) along the length of the groove (42). The length of the slider (43) is the same as the width of the top plate (41). The slider (43) is slidably disposed in the groove (42). The protective canopy (4) is provided with a connector for connecting two adjacent top plates (41).

2. A protective trolley for rockburst sections in tunnels according to claim 1, characterized in that: The trolley body (1) includes a portal frame (11) and a workbench (12). Multiple workbench (12) are provided on both sides of the portal frame (11). The first arch frame (2) and the second arch frame (3) are provided on the portal frame (11).

3. A protective trolley for rockburst sections in tunnels according to claim 2, characterized in that: A ladder (13) is provided between two adjacent workbenches (12), and the protective canopy (4) covers the ladder (13) below.

4. A protective trolley for rockburst sections in tunnels according to claim 2, characterized in that: A winch (14) is installed on the top of the portal frame (11).

5. A protective trolley for rockburst sections in tunnels according to claim 2, characterized in that: The portal frame (11) is provided with diagonal bracing (15).

6. A protective trolley for rockburst sections in tunnels according to claim 1, characterized in that: The connector includes a spring (51) and a telescopic rod (52). The upper top plate (41) has receiving grooves (44) on both sides. The telescopic rod (52) is slidably disposed on the top plate (41) and located in the receiving groove (44). The spring (51) is located in the receiving groove (44). One end of the spring (51) is connected to the bottom wall of the receiving groove (44) and the other end is connected to the telescopic rod (52). The lower top plate (41) has snap-fit ​​holes (45) opposite to the receiving groove (44).

7. A protective trolley for rockburst sections in tunnels according to claim 1, characterized in that: The fastener includes a fixing bolt (6) that threadedly connects the top plate (41) to the first arch frame (2) or the second arch frame (3).

8. A method for constructing a tunnel rockburst section, comprising using a protective trolley for a tunnel rockburst section as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Install the first arch frame (2) and the second arch frame (3) onto the trolley body (1); S2: Slide the protective canopy (4) onto the first arch frame (2) or the second arch frame (3); S3: When workers are working on the tunnel face, the protective canopy (4) is moved above the workers and fixed with fasteners; S4: After drilling is completed, when other operations are carried out on the tunnel face, move the protective canopy (4) away from the tunnel face to increase the working space of the working face.

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