A combined tunnel support system with protective function

Abstract

The present invention relates to the technical field of tunnel support equipment, and discloses a combined tunnel support system with a protective function, including a transverse plate, a hydraulic rod 2 is fixedly connected to the middle of the top of the transverse plate, a curved top plate is fixedly connected to the top of the hydraulic rod 2, the curved top plate is supported in close contact with the top of the tunnel, and the bottom of the curved top plate is fixedly connected to the tops of both sides of the transverse plate; it also includes a support adaptation mechanism, and the support adaptation mechanism is two groups symmetrically installed on both sides of the bottom of the transverse plate. The present invention utilizes a combined assembly and installation method, and can install and fix different components according to actual use needs. After the support component is installed, it can cooperate with the combined component to provide a stable support force on the top, and can also cooperate with the outer component to provide a lateral support force for the support equipment, which can better ensure the stability of the equipment to adapt to different tunnels, improve the equipment installation efficiency, and improve the stability of the support equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel support equipment, and in particular to a combined tunnel support system with a protective function. Background Art

[0002] As an important structure connecting mountainous areas, crossing rivers or underground transportation, the safety and stability of tunnel projects are increasingly valued. Traditional tunnel support structures are relatively limited during installation, cannot provide adaptive support for tunnels, and require a long installation time.

[0003] Combined support systems often have higher construction flexibility and can be adjusted and optimized according to the actual geological conditions and construction requirements of the tunnel, thereby speeding up the construction progress. Some combined support systems adopt modular design and can be assembled on site after prefabrication in the factory, reducing on-site operation time and improving construction efficiency.

[0004] The traditional combined support system has a relatively simple structure and can only be installed in combination. After the combined installation is completed, it cannot provide additional supporting force for the support system. The relatively simple structure cannot further effectively improve the supporting effect of the support system. Summary of the invention

[0005] In order to solve the technical problem that the combined support system proposed in the background technology has a single structure and cannot provide additional support effect during combined installation, the present invention provides a combined tunnel support system with a protective function.

[0006] The present invention is implemented by the following technical solution: a combined tunnel support system with protective function, comprising:

[0007] A horizontal plate, wherein a hydraulic rod 2 is fixedly connected to the middle of the top of the horizontal plate, and an arc-shaped top plate is fixedly connected to the top of the hydraulic rod 2, wherein the arc-shaped top plate is supported in close contact with the top of the tunnel, and the bottom end of the arc-shaped top plate is fixedly connected to the tops of both sides of the horizontal plate;

[0008] Also includes:

[0009] A support adaptation mechanism, wherein the support adaptation mechanism is composed of two groups symmetrically installed on both sides of the bottom end of the horizontal plate, each group of support adaptation mechanism includes a support assembly, a combination assembly and an outer assembly, the support assembly includes a middle support frame, slots are provided on both sides of the middle support frame, a hydraulic rod 1 is fixedly connected to the middle of the bottom end of the middle support frame, the top of the hydraulic rod 1 is telescopically connected to a telescopic rod, the top of the telescopic rod is fixedly connected to a top plate 1, the top of the top plate 1 is fixedly connected to the bottom of the horizontal plate, a spiral guide groove is provided on the outer wall of the telescopic rod, a slider is slidably connected in the spiral guide groove, a rotating block is fixedly connected to the outer side of the slider, the rotating block is rotatably connected to the top of the middle support frame, a plurality of groups of vertical rods are fixedly connected to the bottom end of the rotating block, a plurality of groups of vertical rods are fixedly connected to the bottom ends of the vertical rods, a bottom stopper is fixedly connected to the outer walls of the plurality of vertical rods, and a gear 1 is vertically slidably connected to the outer walls of the plurality of vertical rods.

[0010] Through the above technical scheme, using the combined structure, the support equipment can be installed quickly. According to the needs of use, the combined components and the outer components can be used to provide supporting force for the support body or additional supporting force on the side, providing further stable support for the equipment. Cooperating with the support auxiliary unit can further improve the support equipment to better cope with stress in different directions.

[0011] As a further improvement of the above scheme, the support assembly also includes a support auxiliary unit, which includes a rotating sleeve plate, which is fixed to the top of the outer wall of the telescopic rod, and one end of the rotating sleeve plate is rotatably connected to a support rod, and the other end of the support rod is fixedly connected to a bottom rod.

[0012] As a further improvement of the above scheme, a bottom plate is hinged at the bottom inner side of the middle support frame, a movable plate is vertically slidably connected to the bottom plate, long side plates are symmetrically fixedly connected on both sides of the top of the movable plate, and two groups of long side plates are fixedly connected with groove plates, the two groups of groove plates are clamped with the bottom rod, and two groups of springs are elastically connected between the bottom plate and the movable plate.

[0013] Through the above technical solution, by utilizing the clamping connection between the bottom rod and the groove plate, and cooperating with the spring 1 to push the movable plate to slide vertically, it can cooperate with the support rod 1 to slide adaptively and ensure that the support rod 1 is provided with a supporting force.

[0014] As a further improvement of the above scheme, a rotating sleeve plate 2 is fixedly connected to the middle of the outer wall of the support rod 1, the rotating sleeve plate 2 is rotatably connected to the support rod 2, and a sliding sleeve plate is rotatably connected to the other side of the support rod 2, and the sliding sleeve plate slides horizontally on one side of the cross plate.

[0015] Through the above technical solution, as the displacement of the support rod 1 changes, and under the clamping of the bottom rod, the cross plate can be always supported under the supporting action of the support rod 2.

[0016] As a further improvement of the above scheme, the combined assembly is symmetrically fixedly connected to both sides of the middle supporting frame, including two groups of side frame ones, the two groups of side frame ones are fixedly connected to the middle supporting frame by bolts, the inner walls of the two groups of side frame ones are symmetrically fixedly connected with vertical bars, and the two groups of vertical bars are vertically slidably connected with slides, and the inner sides of the two groups of slides are fixedly connected with top rods.

[0017] As a further improvement of the above solution, a top plate 2 is fixedly connected to the top of the top rod, and one side of the top plate 2 is in contact with the top plate 1.

[0018] Through the above technical solution, top plate 2 is fitted with top plate 1, and can cooperate with top plate 1 to better support the cross plate, thereby improving the supporting force of the equipment.

[0019] As a further improvement of the above scheme, the bottom end of the top rod is threadedly connected with screw rod 1, the bottom end of screw rod 1 is fixedly connected with gear 2, the bottom end of gear 2 is rotatably connected with support rod 3, the bottom end of support rod 3 is fixedly connected to the middle part of the bottom end of side frame 1, and the inner side of gear 2 is meshed with gear 1.

[0020] Through the above technical solution, the top plate 1 and the top plate 2 can be synchronously driven to support the upward displacement of the horizontal plate, and the gear 2 can be driven to rotate in conjunction with the rotation of the gear 1, so that the screw rod 1 drives the top rod thread to rise vertically.

[0021] As a further improvement of the above scheme, the outer component is symmetrically installed on the outer side of the side frame body 1, including two groups of side frame bodies 2, the two groups of side frame bodies 2 are symmetrically fixedly connected to the outer side of the side frame body 1, the two groups of side frame bodies 2 are fixedly connected with a rotating sleeve plate 3, the rotating sleeve plate 3 is rotatably connected with a screw rod 2, the top of the screw rod 2 is fixedly connected with a gear 3, and the inner side of the gear 3 is meshed with the gear 2.

[0022] As a further improvement of the above scheme, the two bottom ends of the screw are threadedly connected with threaded sleeves, the outer side of the threaded sleeve is fixedly connected with a side plate, the outer bottom end of the side plate is fixedly connected with an inclined plate, and the bottom end of the inclined plate is a pointed end.

[0023] Through the above technical solution, gear two is engaged with transmission gear three to rotate, and screw two can be driven to rotate synchronously, so as to drive the threaded sleeve to move vertically up and down, so as to realize the inclined plate taking root in the ground.

[0024] As a further improvement of the above scheme, the inclined plate is slidably connected to a bottom support block, the bottom support block is kept level with the ground, the top of the bottom support block is symmetrically fixedly connected to a sliding rod, and the top of the sliding rod is slidably connected to a support plate, the inner side of the support plate is fixedly connected to the top of the side plate, the support plate and the sliding rod are symmetrically elastically connected with two springs, and the two groups of the two springs are respectively wound around the outer wall of the sliding rod.

[0025] Through the above technical solution, as the inclined plate descends, the bottom support block can stably support the ground, and under the elastic action of the two groups of springs, the spring 2 can better abut against the ground, providing lateral supporting force for the support equipment.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention utilizes a combined assembly and installation method, and can install and fix different components according to actual use needs. After the support component is installed, it can cooperate with the combined component to provide a stable top support force, and can also cooperate with the outer component to provide a lateral support force for the support equipment. The stability of the equipment can be better guaranteed to adapt to different tunnels, improve the equipment installation efficiency, and improve the stability of the support equipment.

[0028] The present invention can also sequentially install the combined component and the outer component around the outer side of the supporting component to provide further stable support for the equipment.

[0029] The present invention utilizes the support auxiliary unit to provide further support for the top horizontal plate and provide supporting force for the second hydraulic rod, and under the cooperation of the second hydraulic rod, the arc-shaped top plate is further fixedly supported. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the overall structure of a combined tunnel support system with a protective function provided in Example 1 of the present invention;

[0031] Figure 2 It is a schematic diagram of the side view structure of the present invention;

[0032] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure in the AA direction;

[0033] Figure 4 It is a schematic diagram of the structural connection state of the supporting adaptation mechanism of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the support assembly of the present invention;

[0035] Figure 6 For the present invention Figure 4 A schematic diagram of the structure enlargement at the center A;

[0036] Figure 7 For the present invention Figure 4 A schematic diagram of the structure enlarged at B in the middle;

[0037] Figure 8 For the present invention Figure 5Enlarged schematic diagram of the structure at C in the middle.

[0038] Description of main symbols:

[0039] 1. Middle support frame; 2. Hydraulic rod 1; 3. Telescopic rod; 4. Top plate 1; 5. Horizontal plate; 6. Hydraulic rod 2; 7. Arc top plate; 8. Rotating block; 9. Vertical rod; 10. Bottom stopper; 11. Gear 1; 12. Bottom plate; 13. Movable plate; 14. Spring 1; 15. Side long plate; 16. Grooved plate; 17. Bottom rod; 18. Support rod 1; 19. Rotating sleeve plate 1; 20. Rotating sleeve plate 2; 21. Support rod 2 ; 22. Sliding sleeve; 23. Side frame one; 24. Vertical bar; 25. Slide plate; 26. Top rod; 27. Top plate two; 28. Screw one; 29. ​​Support rod three; 30. Gear two; 31. Gear three; 32. Screw two; 33. Rotating sleeve three; 34. Threaded sleeve block; 35. Side plate; 36. Inclined plate; 37. Support plate; 38. Bottom support block; 39. Sliding rod; 40. Spring two; 41. Side frame two. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0041] Example 1: Please combine Figure 1-Figure 5 and Figure 6 and Figure 8 , a combined tunnel support system with a protective function in this embodiment includes:

[0042] A horizontal plate 5, a hydraulic rod 2 6 is fixedly connected to the middle of the top of the horizontal plate 5, a curved top plate 7 is fixedly connected to the top of the hydraulic rod 2 6, the curved top plate 7 is supported in close contact with the top of the tunnel, and the bottom end of the curved top plate 7 is fixedly connected to the tops of both sides of the horizontal plate 5;

[0043] Also includes:

[0044] A support adaptation mechanism, the support adaptation mechanism is composed of two groups symmetrically installed on both sides of the bottom end of the horizontal plate 5, each group of support adaptation mechanisms includes a support assembly, a combination assembly and an outer assembly, the support assembly includes a middle support frame 1, and slots are provided on both sides of the middle support frame 1. A hydraulic rod 2 is fixedly connected to the middle of the bottom end of the middle support frame 1, and a telescopic rod 3 is telescopically connected to the top of the hydraulic rod 2. A top plate 4 is fixedly connected to the top of the telescopic rod 3, and the top of the top plate 4 is fixedly connected to the bottom of the horizontal plate 5. A spiral guide groove is provided on the outer wall of the telescopic rod 3, and a slider is slidably connected in the spiral guide groove. A rotating block 8 is fixedly connected to the outer side of the slider, and the rotating block 8 is rotatably connected to the top of the middle support frame 1. A plurality of vertical rods 9 are fixedly connected to the bottom end of the rotating block 8, and a bottom stopper 10 is fixedly connected to the bottom end of the plurality of vertical rods 9, and the outer walls of the plurality of vertical rods 9 are vertically slidably connected to a gear 11.

[0045] The support assembly also includes a support auxiliary unit, which includes a rotating sleeve 19, which is fixed to the top of the outer wall of the telescopic rod 3, and the rotating sleeve 19 is rotatably connected to a support rod 18, and the other end of the support rod 18 is fixedly connected to a bottom rod 17.

[0046] A bottom plate 12 is hinged at the bottom inner side of the middle support frame 1, a movable plate 13 is vertically slidably connected inside the bottom plate 12, side long plates 15 are symmetrically fixedly connected on both sides of the top of the movable plate 13, and two groups of side long plates 15 are fixedly connected with groove plates 16, the two groups of groove plates 16 are clamped with the bottom rod 17, and two groups of springs 14 are elastically connected between the bottom plate 12 and the movable plate 13.

[0047] A rotating sleeve plate 20 is fixedly connected to the middle of the outer wall of the support rod 18, and the rotating sleeve plate 20 is rotatably connected to the support rod 21. The other side of the support rod 21 is rotatably connected to a sliding sleeve plate 22, and the sliding sleeve plate 22 slides horizontally on one side of the horizontal plate 5.

[0048] The implementation principle of a combined tunnel support system with a protective function in the embodiment of the present application is:

[0049] After the arc-shaped top plate 7 is fixedly installed with the hydraulic rod 26 and the cross plate 5, the arc-shaped top plate 7 suitable for the top of the tunnel is selected. After the installation is completed, the bottom plate 12 hinged with the middle support frame 1 at the bottom end is unfolded, and the bottom rod 17 and the groove plate 16 are connected to the corresponding position, and the bottom end of the cross plate 5 is fixedly connected with the top of the top plate 4, and the two groups of hydraulic rods 2 are synchronously driven to push the telescopic rod 3 to move vertically upward, and the rotating sleeve plate 19 is used to pull the support rod 18 to move. As the top plate 4 is lifted, it will act on the fixed length of the support rod 18. Under the action of the spring 14 and the clamping groove at the groove plate 16, the bottom rod 17 at the bottom of the support rod 18 can always be supported by the clamping connection between the groove plate 16 and the bottom rod 17; as the support rod 18 moves toward the middle support frame 1, the sliding sleeve plate 22 at the top of the support rod 21 can be pulled to slide along the horizontal plate 5 by relying on the connection between the rotating sleeve plate 20 and the support rod 21, and the support rod 21 can be used to further support the top horizontal plate 5.

[0050] Example 2: Combination Figure 1 and Figure 4 Based on Example 1, this embodiment is further improved in that:

[0051] The combined components are symmetrically fixedly connected to both sides of the middle support frame 1, including two groups of side frames 23, which are fixedly connected to the middle support frame 1 by bolts, and the inner walls of the two groups of side frames 23 are symmetrically fixedly connected with vertical bars 24, and the two groups of vertical bars 24 are vertically slidably connected with slide plates 25, and the inner sides of the two groups of slide plates 25 are fixedly connected with top rods 26.

[0052] A top plate 27 is fixedly connected to the top of the top rod 26 , and one side of the top plate 27 is in contact with the top plate 1 4 .

[0053] The bottom end of the top rod 26 is threadedly connected to a screw rod 28, the bottom end of the screw rod 28 is fixedly connected to a gear 2 30, the bottom end of the gear 2 30 is rotatably connected to a support rod 3 29, the bottom end of the support rod 3 29 is fixedly connected to the middle of the bottom end of the side frame 1 23, and the inner side of the gear 2 30 is meshed with the gear 11.

[0054] The implementation principle of a combined tunnel support system with a protective function in the embodiment of the present application is:

[0055] At the initial stage of support installation, the two sets of side frames 23 are fixed to the two sides of the middle support frame 1 with bolts respectively, and the vertical sliding gear 11 slides along the vertical rod 9, so that the gear 11 is meshed and connected with the gear 2 30, and the top plate 27 at the top of the side frame 23 is in a horizontal state with the top plate 4 at the top of the telescopic rod 3, and the two are in contact with each other. As the hydraulic rod 2 drives the telescopic rod 3 to telescope and move upward, it will drive the rotating block 8 to rotate and drive the vertical rod 9 to drive the gear 11 to rotate. Under the meshing connection between the gear 11 and the gear 2 30, the screw rod 28 is threadedly connected with the top rod 26, so that the top plate 27 can rise vertically synchronously with the top plate 4, and the top horizontal plate 5 is lifted and supported, so as to further provide a stable supporting force for the equipment.

[0056] Example 3: Combination Figure 1-Figure 4 and Figure 7 Based on Example 1 and Example 2, this embodiment is further improved in that:

[0057] The outer component is symmetrically installed on the outer side of the side frame 23, including two groups of side frames 41, the two groups of side frames 41 are symmetrically fixedly connected to the outer side of the side frame 23, the two groups of side frames 41 are fixedly connected with a rotating sleeve 33, the rotating sleeve 33 is rotatably connected with a screw 2 32, the top of the screw 2 32 is fixedly connected with a gear 31, and the inner side of the gear 31 is meshed with the gear 2 30.

[0058] The bottom end of the screw rod 32 is threadedly connected with a threaded sleeve block 34, the outer side of the threaded sleeve block 34 is fixedly connected with a side plate 35, the outer bottom end of the side plate 35 is fixedly connected with an inclined plate 36, and the bottom end of the inclined plate 36 is set as a pointed end.

[0059] The inclined plate 36 is slidably connected to a bottom support block 38, and the bottom support block 38 is kept horizontal with the ground. The top of the bottom support block 38 is symmetrically fixedly connected to a slide rod 39, and the top of the slide rod 39 is slidably connected to a support plate 37. The inner side of the support plate 37 is fixedly connected to the top of the side plate 35. The support plate 37 and the slide rod 39 are symmetrically elastically connected with springs 40. The two groups of springs 40 are respectively wound around the outer wall of the slide rod 39.

[0060] The implementation principle of a combined tunnel support system with a protective function in the embodiment of the present application is:

[0061] Mode 1: The two sets of side frames 23 are directly fixedly connected to the two sides of the middle support frame 1 with bolts, and then the hydraulic rod 2 is started to push the telescopic rod 3 to vertically lift the top cross plate 5 and make the arc top plate 7 fit with the tunnel top. As the telescopic rod 3 is extended and retracted, the sliding of the slider at the spiral guide groove and the rotating block 8 can drive the entire rotating block 8 and the vertical rod 9 to rotate, so that the gear 11 vertically slidably connected to the vertical rod 9 can drive the gear 3 31 to rotate, and as the gear 3 31 rotates, the threaded sleeve block 34 threadedly connected to the screw rod 2 32 is driven to descend, driving the bottom ends of the two sets of inclined plates 36 to be inserted into the tunnel ground. With the vertical upward displacement of the telescopic rod 3, the inclined plates 36 will be continuously driven to pierce downward, and the bottom ends of the two sets of bottom support blocks 38 will abut against the ground, and as the inclined plates 36 descend, the elasticity of the two sets of springs 2 40 can further push the bottom support blocks 38 against the ground, providing side support for the equipment.

[0062] Mode 2: The side frame 2 41 is fixed to the outside of the side frame 1 23 by bolts, and the gear 3 31 is meshed with the gear 2 30. As the telescopic rod 3 moves upward, the gear 1 11 is used to drive the gear 2 30 to transmit, and the gear 2 30 is meshed with the gear 3 31 to drive the inclined plate 36 downward again for fixed support, and the bottom support block 38 is used to provide side support under the elasticity of the spring 2 40.

[0063] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A combined tunnel support system with protective function, comprising: A horizontal plate, wherein a hydraulic rod 2 is fixedly connected to the middle of the top of the horizontal plate, and an arc-shaped top plate is fixedly connected to the top of the hydraulic rod 2, wherein the arc-shaped top plate is supported in close contact with the top of the tunnel, and the bottom end of the arc-shaped top plate is fixedly connected to the tops of both sides of the horizontal plate; It is characterized by further comprising: A support adaptation mechanism, wherein the support adaptation mechanism is two groups symmetrically installed on both sides of the bottom end of the horizontal plate, each group of support adaptation mechanisms includes a support assembly, a combination assembly and an outer assembly, the support assembly includes a middle support frame, both sides of the middle support frame are provided with slots, a hydraulic rod 1 is fixedly connected to the middle of the bottom end of the middle support frame, the top of the hydraulic rod 1 is telescopically connected to a telescopic rod, the top of the telescopic rod is fixedly connected to a top plate 1, the top of the top plate 1 is fixedly connected to the bottom of the horizontal plate, a spiral guide groove is provided on the outer wall of the telescopic rod, a slider is slidably connected in the spiral guide groove, and the slider The outer side of the block is fixedly connected with a rotating block, and the rotating block is rotatably connected to the top of the middle support frame. The bottom end of the rotating block is fixedly connected to multiple sets of vertical rods, and the bottom ends of the multiple sets of vertical rods are fixedly connected to bottom stoppers, and the outer walls of the multiple sets of vertical rods are vertically slidably connected with gears. The support assembly also includes a support auxiliary unit, and the support auxiliary unit includes a rotating sleeve plate, which is fixed to the top of the outer wall of the telescopic rod, and one end of the rotating sleeve plate is rotatably connected to a support rod, and the other end of the support rod is fixedly connected to a bottom rod. The bottom of the inner side of the middle support frame is hinged with a bottom plate, and the bottom plate slides vertically inside The movable plate is movably connected, and the two sides of the top of the movable plate are symmetrically fixedly connected with side long plates, and the two groups of side long plates are fixedly connected with groove plates, the two groups of groove plates are clamped with the bottom rod, and two groups of springs are elastically connected between the bottom plate and the movable plate. A rotating sleeve plate 2 is fixedly connected to the middle of the outer wall of the support rod 1, and the rotating sleeve plate 2 is rotatably connected to the support rod 2. The other side of the support rod 2 is rotatably connected to a sliding sleeve plate, and the sliding sleeve plate slides horizontally on one side of the cross plate. The combined assembly is symmetrically fixedly connected to both sides of the middle support frame, including two groups of side frames 1, two groups of side The frame body 1 is fixedly connected to the middle supporting frame body by bolts, the inner walls of the two groups of side frame bodies 1 are symmetrically fixedly connected with vertical bars, and the two groups of vertical bars are vertically slidably connected with slides, the inner sides of the two groups of slides are fixedly connected with top rods, and the outer components are symmetrically installed on the outer side of the side frame body 1, including two groups of side frame bodies 2, the two groups of side frame bodies 2 are symmetrically fixedly connected to the outer side of the side frame body 1, the two groups of side frame bodies 2 are fixedly connected with rotating sleeve plates 3, the rotating sleeve plates 3 are rotatably connected with screw rods 2, the top of the screw rods 2 is fixedly connected with gear 3, and the inner side of the gear 3 is meshed with gear 2.

2. A combined tunnel support system with protective function as claimed in claim 1, characterized in that: The top of the top rod is fixedly connected with a top plate 2, and one side of the top plate 2 is in contact with the top plate 1.

3. A combined tunnel support system with protective function as claimed in claim 2, characterized in that: The bottom end of the top rod is threadedly connected with screw rod 1, the bottom end of screw rod 1 is fixedly connected with gear 2, the bottom end of gear 2 is rotatably connected with support rod 3, the bottom end of support rod 3 is fixedly connected to the middle part of the bottom end of side frame 1, and the inner side of gear 2 is meshed with gear 1.

4. A combined tunnel support system with protective function as claimed in claim 1, characterized in that: The two bottom ends of the screw rod are threadedly connected with threaded sleeves, the outer side of the threaded sleeve is fixedly connected with a side plate, the outer bottom end of the side plate is fixedly connected with an inclined plate, and the bottom end of the inclined plate is a pointed end.

5. A combined tunnel support system with protective function as claimed in claim 4, characterized in that: The inclined plate is slidably connected to a bottom support block, the bottom support block is kept level with the ground, the top of the bottom support block is symmetrically fixedly connected to a sliding rod, and the top of the sliding rod is slidably connected to a support plate, the inner side of the support plate is fixedly connected to the top of the side plate, the support plate and the sliding rod are symmetrically elastically connected with two springs, and two groups of the two springs are respectively wound around the outer wall of the sliding rod.

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