A tilt rigid slippable structure for protecting a tunnel in a reverse fault

Abstract

The application provides an inclined rigid slippable structure for protecting a tunnel in a reverse fault, characterized in that the structure comprises a first slippable block group and a second slippable block group, the first slippable block group and the second slippable block group are arranged on two sides of the tunnel in the length direction, the first slippable block group and the second slippable block group are arranged obliquely relative to the ground surface, the first slippable block group and the second slippable block group each comprise two slippable blocks which are connected to each other in a slippable mode, the first slippable block group and the second slippable block group absorb the energy released by the reverse fault dislocation, avoid the energy transmission to the tunnel, protect the tunnel structure from instability, the first slippable block group and the second slippable block group are arranged outside the tunnel, on the basis of protecting the tunnel structure from instability, the overall structure of the tunnel is not changed and the tunnel section is not reduced, and the problems of poor integrity of the reinforced tunnel structure and reduction of the tunnel section in the traditional tunnel protection measures are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel construction, and particularly relates to an inclined rigid slippable structure for protecting a tunnel in a reverse fault. BACKGROUND

[0002] In recent years, with the acceleration of urbanization process and the continuous advancement of infrastructure construction in China, the construction of underground tunnels has also shown an explosive growth. However, the risk of earthquake disasters in tunnel engineering is increasing, especially the influence of reverse fault dislocation caused by earthquakes on tunnel engineering cannot be ignored.

[0003] At present, the tunnel of city area railway in China mainly adopts shield construction method, and this technology has been widely applied. However, when an earthquake occurs, the severe dislocation of reverse fault makes the position and structure state of the tunnel difficult to control, and the stability of the tunnel structure is easily destroyed, causing casualties and huge property losses. Therefore, how to ensure the stability of the tunnel structure when the reverse fault dislocation event occurs has become a problem to be solved in the current tunnel construction.

[0004] The traditional protection measures mainly adopt reinforcement measures, such as reinforced concrete reinforcement, steel frame reinforcement, etc. These methods can enhance the bearing capacity and seismic capacity of the tunnel structure, but the overall performance of the reinforced tunnel structure is poor, the tunnel cross section is reduced, and the use efficiency of the vehicle passing and transportation is low. Moreover, the time and cost required by the reinforcement measures are also high. SUMMARY

[0005] In view of the above problems in the prior art, the present application aims to provide an inclined rigid slippable structure for protecting a tunnel in a reverse fault, which solves the problems of poor overall performance of the reinforced tunnel structure and reduction of the tunnel cross section in the traditional tunnel protection measures.

[0006] In order to achieve the above-mentioned application purposes, the technical solutions adopted by the present application are as follows:

[0007] An inclined rigid slippable structure for protecting a tunnel in a reverse fault is provided, which comprises a first slippable block group and a second slippable block group, the first slippable block group and the second slippable block group are respectively arranged on both sides of the length direction of the tunnel; the first slippable block group and the second slippable block group are arranged in parallel with each other; the top of the first slippable block group and the second slippable block group is flush with the ground surface, and the bottom of the first slippable block group and the second slippable block group is embedded in the stratum;

[0008] The first slippable block group and the second slippable block group are arranged obliquely relative to the ground surface; the first slippable block group and the second slippable block group each comprise two slippable blocks connected with each other in sliding mode.

[0009] The basic principle of the inclined rigid sliding structure for protecting tunnels in reverse faults in this invention is as follows: By setting a first sliding block group and a second sliding block group on both sides along the tunnel's length, when reverse fault displacement occurs in the soil surrounding the tunnel, the two sliding blocks in the first and second sliding block groups can undergo relative displacement due to soil compression. This absorbs the energy released by the reverse fault displacement, preventing energy transfer to the tunnel and protecting the tunnel structure from instability. Furthermore, the first and second sliding block groups are inclined relative to the ground surface, giving them both lateral and vertical components, allowing them to release displacement and energy generated by fault displacement in both horizontal and vertical directions, thus protecting the tunnel. Since the location of reverse fault displacement is uncertain in actual engineering, setting two parallel sliding block groups can solve the problem of this uncertainty.

[0010] Since the first and second sliding block groups in this invention are located outside the tunnel, the overall structure of the tunnel will not be changed and the tunnel cross-section will not be reduced while protecting the tunnel structure from instability. This solves the problems of poor overall integrity of the reinforced tunnel structure and reduced tunnel cross-section that exist in traditional tunnel protection measures.

[0011] Furthermore, as a specific arrangement for the sliding connection of two sliding blocks in the first sliding block group and the second sliding block group, the two sliding blocks in the first sliding block group and the second sliding block group are slidably connected by meshing steel teeth, and the sliding direction is the width direction of the first sliding block group and the second sliding block group.

[0012] Furthermore, as a specific arrangement of the sliding blocks, each sliding block is made of a rigid steel sheet with a rectangular structure; the length direction of each sliding block is in the same direction as the length direction of the tunnel; the width direction of each sliding block is inclined relative to the ground surface; and meshing steel teeth are provided between the two sliding blocks in the first sliding block group and the second sliding block group.

[0013] Furthermore, as a specific arrangement of the meshing steel teeth, the meshing steel teeth include multiple protruding steel teeth that are evenly spaced apart, and an inner groove is formed between two adjacent protruding steel teeth; multiple protruding steel teeth are provided on the inner surfaces of the two sliding blocks in the first sliding block group and the second sliding block group, and the length direction of each protruding steel tooth is in the same direction as the width direction of the first sliding block group and the second sliding block group.

[0014] When the two sliding blocks in the first and second sliding block groups are engaged, the protruding steel teeth are fitted into the concave tooth groove.

[0015] Furthermore, the top of each protruding steel tooth is rounded, and the interior of each concave tooth groove is set at a right angle. The purpose of this setting is to create a gap between the two sliding blocks when the protruding steel tooth is fitted into the concave tooth groove, so as to facilitate the injection of lubricant, reduce the friction between the two sliding blocks in each sliding block group, and facilitate the absorption of the energy released by the reverse fault displacement through the relative movement between the two sliding blocks, thus protecting the tunnel structure from instability.

[0016] Furthermore, each sliding block is provided with grouting holes extending from the top to the bottom. Specifically, the grouting holes are connected to the outer wall of each sliding block. After the first and second sliding block groups are embedded into the stratum, grout is injected into the grouting holes. The grout binds the outer wall of each sliding block to the soil in the stratum, increasing the friction between the outer wall of each sliding block and the soil in the stratum. This makes the friction between the outer wall of each sliding block and the soil in the stratum greater than the friction between two sliding blocks in the first and second sliding block groups, allowing the two sliding blocks to slide more significantly relative to each other.

[0017] Furthermore, each slip block has a built-in displacement sensor, and each displacement sensor is electrically connected to the back-end processor. The displacement sensor can record the displacement of each slip block and upload it to the back-end processor. Alternatively, through the coordinated action of two displacement sensors in the first and second slip block groups, the relative displacement of two slip blocks within each slip block group during reverse fault displacement can be obtained, and corresponding engineering measures can be taken.

[0018] Furthermore, both the first and second slip block groups have a cone-shaped bottom with the tip pointing downwards. During construction, inserting the first and second slip block groups into the strata can effectively reduce the dynamic friction between the first and second slip block groups and the soil. In the event of reverse fault displacement later, it can enhance the anchoring effect at the bottom of the first and second slip block groups.

[0019] Furthermore, both the first and second sliding block assemblies are topped with waterproof rubber sheets to seal multiple grouting holes and the gaps between the two sliding blocks. These waterproof rubber sheets are bolted to the tops of the first and second sliding block assemblies, sealing their tops and preventing leakage due to rainwater intrusion during construction. They are characterized by their ability to be installed and removed at any time. Because of their low strength, the waterproof rubber sheets automatically break during reverse fault displacement, thus not affecting the relative sliding of the two sliding plates in each sliding block assembly.

[0020] Both the first and second sliding block assemblies are equipped with embedded rubber sleeves at their bottoms, located between the two sliding blocks in each assembly. These sleeves prevent groundwater infiltration, thus avoiding water accumulation between the two sliding plates in the first and second sliding block assemblies and improving the safety and durability of the structure.

[0021] Furthermore, the tunnel's burial depth is H. b The diameter of the tunnel is D; the dip angle of the reverse fault is α; the first sliding block group is set on the left side of the tunnel length direction, and the shortest horizontal distance between the right sidewall of the first sliding block group and the outer wall of the tunnel is W1;

[0022] The second sliding block assembly is located on the right side along the tunnel length; the shortest horizontal distance between the left sidewall of the second sliding block assembly and the outer wall of the tunnel is W2; the values ​​of W1 and W2 are: W1 = W2 = H b / 3;

[0023] The vertical distance between the bottom of both the first and second sliding block groups and the ground surface is H. l H l The value of is: H l =3D;

[0024] The angle between the first and second sliding block groups and the ground surface is θ, and the value of angle θ is: θ = α + 15°. When designing inclined rigid sliding structures for tunnel protection in reverse faults, the design parameters should be followed to achieve a more stable anti-fault composite structure.

[0025] The beneficial effects of this invention are as follows: The inclined rigid sliding structure for protecting tunnels in reverse faults in this invention, by setting a first sliding block group and a second sliding block group on both sides of the tunnel length direction, absorbs the energy released by the reverse fault displacement, avoids the energy transfer to the tunnel, and protects the tunnel structure from instability. The first and second sliding block groups are set outside the tunnel, so while protecting the tunnel structure from instability, the overall structure of the tunnel is not changed and the tunnel cross-section is not reduced. This solves the problems of poor overall integrity of the reinforced tunnel structure and reduced tunnel cross-section in traditional tunnel protection measures. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an inclined rigid sliding structure for protecting tunnels in a reverse fault.

[0027] Figure 2 This is a frontal plan view showing the relative position of an inclined, rigid, and slip-resistant structure protecting a tunnel in a reverse fault with the strata.

[0028] Figure 3This is a top view of the meshing steel teeth.

[0029] Figure 4 This is a front view schematic diagram of a single set of sliding block groups.

[0030] Figure 5 This is a three-dimensional disassembled structural diagram of a single set of sliding blocks.

[0031] Figure 6 This is a dimensioned drawing of an inclined, rigid, and slip-prone structure for protecting a tunnel in a reverse fault.

[0032] Figure 7 This is a construction flowchart for an inclined rigid sliding structure that protects a tunnel in a reverse fault.

[0033] Among them, 1. First sliding block group; 2. Second sliding block group; 3. Upper left sliding block; 4. Left sliding block; 5. Upper right sliding block; 6. Right sliding block; 7. Tunnel; 8. Ground surface; 9. Reverse fault fracture surface; 9A. Reverse fault fracture surface on the left side of the first sliding block group; 9B. Reverse fault fracture surface on the right side of the tunnel and on the left side of the second sliding block group; 9C. Reverse fault fracture surface on the right side of the second sliding block group; 10. Meshing steel teeth; 11. Conical structure; 12. Concave tooth groove; 13. Protruding steel teeth; 14. Grouting hole; 15. Bolt; 16. Waterproof rubber sheet; 17. Embedded rubber strip; 18. Displacement sensor. Detailed Implementation

[0034] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0035] like Figures 1-2 As shown, the present invention provides an inclined rigid sliding structure for protecting tunnels in reverse faults, comprising a first sliding block group 1 and a second sliding block group 2, which are respectively disposed on both sides of the tunnel 7 along its length; the first sliding block group 1 and the second sliding block group 2 are arranged parallel to each other; the tops of the first sliding block group 1 and the second sliding block group 2 are flush with the ground surface 8, and the bottoms of the first sliding block group 1 and the second sliding block group 2 are embedded in the stratum; the first sliding block group 1 and the second sliding block group 2 are inclined relative to the ground surface 8; each of the first sliding block group 1 and the second sliding block group 2 includes two sliding blocks that are slidably connected to each other.

[0036] Specifically, the first sliding block group 1 is located on the left side along the length of tunnel 7, and the two sliding blocks in the first sliding block group 1 are the upper left sliding block 3 and the lower left sliding block 4. The second sliding block group 2 is located on the right side along the length of tunnel 7, and the two sliding blocks in the second sliding block group 2 are the upper right sliding block 5 and the lower right sliding block 6. The upper left sliding block 3 and the upper right sliding block 5 have the same structure, and the lower left sliding block 4 and the lower right sliding block 6 have the same structure. The upper left sliding block 3 and the lower left sliding block 4, and the upper right sliding block 5 and the lower right sliding block 6 are combined by meshing steel tooth surfaces 10. The meshing steel tooth surfaces 10 are arranged so that the sliding direction between the upper left sliding block 3 and the lower left sliding block 4, and between the upper right sliding block 5 and the lower right sliding block 6, is the width direction of both the first sliding block group 1 and the second sliding block group 2.

[0037] When reverse fault displacement occurs in the soil surrounding tunnel 7, the two sliding blocks in the first sliding block group 1 and the second sliding block group 2 can undergo relative displacement through soil compression. This absorbs the energy released by the reverse fault displacement, preventing energy transfer to tunnel 7 and protecting the tunnel 7 structure from instability. Furthermore, the first sliding block group 1 and the second sliding block group 2 are inclined relative to the ground surface 8, giving them both lateral and vertical components. This allows them to release the displacement and energy generated by the fault displacement in both horizontal and vertical directions, thus protecting tunnel 7. Since the location of reverse fault displacement is uncertain in actual engineering, setting up two parallel sliding block groups can solve the problem of this uncertainty.

[0038] Specifically, such as Figure 2As shown, the rupture types caused by reverse fault displacement are divided into three types: reverse fault rupture surface 9A on the left side of the first slip block group, reverse fault rupture surface 9B on the right side of the tunnel and on the left side of the second slip block group, and reverse fault rupture surface 9C on the right side of the second slip block group. For the reverse fault rupture surface 9A on the left side of the first slip block group, the first slip block group 1 mainly plays a role. The soil on the left side of the first slip block group 1 moves upward due to reverse fault displacement. Through the dynamic friction between the soil and the left side of the upper left slip block 3 in the first slip block group 1, the upper left slip block 3 is pushed upward, causing it to have relative displacement with the left slip block 4, thereby releasing the energy generated by the reverse fault displacement and reducing the displacement of the tunnel 7. For the reverse fault rupture surface 9B on the right side of the tunnel and to the left of the second slip block group, the dynamic friction of the left side of the upper right slip block 5 in the second slip block group 2 pushes the upper right slip block 5 upward, causing it to move relative to the lower right slip block 6, thereby releasing the energy generated by the reverse fault displacement. Simultaneously, due to the decrease in soil density around the first slip block group 1 caused by the reverse fault displacement, the first slip block group 1 also undergoes relative sliding, thus releasing the energy generated by the reverse fault displacement. For the reverse fault rupture surface 9C on the right side of the second slip block group, the reverse fault displacement of the soil causes the first slip block group 1, the second slip block group 2, and the tunnel 7 to move together with the hanging wall of the fault. The density of the soil on the hanging wall changes, and the upper left slip block 3, the lower left slip block 4, the upper right slip block 5, and the lower right slip block 6 will all undergo small-amplitude relative sliding, thereby releasing the potential for disturbance to the tunnel 7 generated by the reverse fault displacement, ultimately protecting the structure of the tunnel 7 from damage.

[0039] Specifically, the upper left sliding block 3, the lower left sliding block 4, the upper right sliding block 5, and the lower right sliding block 6 are all made of rigid steel sheets with a rectangular structure; the length direction of each sliding block is in the same direction as the length direction of the tunnel 7; the width direction of each sliding block is inclined relative to the ground surface 8; the meshing steel tooth surface 10 is provided between the two sliding blocks in the first sliding block group 1 and the second sliding block group 2.

[0040] Preferred, but not limited to, such as Figure 1 and Figure 3 As shown, the meshing steel tooth surface 10 includes a plurality of evenly spaced protruding steel teeth 13, with a concave tooth groove 12 formed between adjacent protruding steel teeth 13. The inner surfaces of the two sliding blocks in the first sliding block group 1 and the second sliding block group 2 are each provided with a plurality of protruding steel teeth 13, the length direction of each protruding steel tooth 13 being in the same direction as the width direction of the first sliding block group 1 and the second sliding block group 2. When the two sliding blocks in the first sliding block group 1 and the second sliding block group 2 are engaged, the protruding steel teeth 13 are fitted into the concave tooth groove 12.

[0041] Meanwhile, the top of each protruding steel tooth 13 is rounded, and the interior of each concave tooth groove 12 is set at a right angle. The purpose of this setting is that when the protruding steel tooth 13 is fitted into the interior of the concave tooth groove 12, a gap is created between the two sliding blocks, which facilitates the injection of lubricant, reduces the friction between the two sliding blocks in each sliding block group, and facilitates the absorption of the energy released by the reverse fault displacement through the relative movement between the two sliding blocks, thus protecting the structure of tunnel 7 from instability.

[0042] like Figure 3 As shown, each sliding block is provided with a grouting hole 14 extending from the top to the bottom. Specifically, the grouting hole 14 is connected to the outer wall of each sliding block. After the first sliding block group 1 and the second sliding block group 2 are embedded into the stratum, grout is injected into the grouting hole 14. The grout combines the outer wall of each sliding block with the soil in the stratum, increasing the friction between the outer wall of each sliding block and the soil in the stratum. This makes the friction between the outer wall of each sliding block and the soil in the stratum greater than the friction between two sliding blocks in the first sliding block group 1 and the second sliding block group 2, allowing the two sliding blocks to slide more significantly relative to each other.

[0043] like Figure 4 and Figure 5 As shown, each sliding block has a built-in displacement sensor 18, and each displacement sensor 18 is electrically connected to the back-end processor. The displacement sensor 18 can record the displacement of each sliding block and upload it to the back-end processor. Alternatively, through the coordinated action of two displacement sensors 18 in the first sliding block group 1 and the second sliding block group 2, the relative displacement of two sliding blocks in each group can be obtained during the reverse fault displacement process, and corresponding engineering measures can be taken.

[0044] The bottom of both the first slip block group 1 and the second slip block group 2 is a cone-shaped structure 11 with the tip pointing downwards. During construction, inserting the first slip block group 1 and the second slip block group 2 into the stratum can effectively reduce the dynamic friction between the first slip block group 1 and the second slip block group 2 and the soil. In the later stage, when reverse fault displacement occurs, it can enhance the anchoring effect at the bottom of the first slip block group 1 and the second slip block group 2.

[0045] The tops of both the first sliding block group 1 and the second sliding block group 2 are equipped with waterproof rubber sheets 16 for sealing multiple grouting holes 14 and the gaps between the two sliding blocks. The waterproof rubber sheets 16 are fixed to the tops of the first sliding block group 1 and the second sliding block group 2 by bolts 15, sealing the tops of the first sliding block group 1 and the second sliding block group 2 to prevent the risk of leakage due to rainwater intrusion during structural construction. A key feature is that they can be installed and disassembled at any time. Due to the low strength of the waterproof rubber sheets 16, they will automatically break during reverse fault displacement, thus not affecting the relative sliding of the two sliding plates in each sliding block group.

[0046] Both the first sliding block group 1 and the second sliding block group 2 are equipped with embedded rubber sleeves at their bottoms, located between the two sliding blocks in each group. These sleeves prevent groundwater infiltration, thus avoiding water accumulation between the two sliding plates in the first sliding block group 1 and the second sliding block group 2, and improving the safety and durability of the structure.

[0047] Both the first sliding block group 1 and the second sliding block group 2 are equipped with embedded rubber sleeves 17 at their bottoms, which are located between the two sliding blocks in each group. These sleeves prevent the infiltration of groundwater, thus avoiding water accumulation between the two sliding plates in the first sliding block group 1 and the second sliding block group 2, and improving the safety and durability of the structure.

[0048] like Figure 6 As shown, the burial depth of tunnel 7 is H. b The diameter of tunnel 7 is D; the dip angle of the reverse fault is α; the first sliding block group 1 is located on the left side of the length direction of tunnel 7, and the shortest horizontal distance between the right sidewall of the first sliding block group 1 and the outer wall of tunnel 7 is W1.

[0049] The second sliding block group 2 is located on the right side along the length of tunnel 7; the shortest horizontal distance between the left sidewall of the second sliding block group 2 and the outer wall of tunnel 7 is W2; the values ​​of W1 and W2 are: W1 = W2 = H b / 3;

[0050] The vertical distance between the bottom of the first sliding block group 1 and the second sliding block group 2 and the ground surface 8 is H. l H l The value of is: H l =3D;

[0051] The angle between the first sliding block group 1 and the second sliding block group 2 and the ground surface 8 is θ, and the value of the angle θ is: θ = α + 15°. When designing the inclined rigid sliding structure for protecting the tunnel 7 in the reverse fault, the design parameters should be followed to achieve a more stable anti-fault combination structure.

[0052] In summary, the present invention provides an inclined rigid sliding structure for protecting tunnels in reverse faults. By setting a first sliding block group 1 and a second sliding block group 2 on both sides of the tunnel 7 along its length, the first sliding block group 1 and the second sliding block group 2 absorb the energy released by the reverse fault displacement, preventing energy transfer to the tunnel 7 and protecting the tunnel 7 structure from instability. The first sliding block group 1 and the second sliding block group 2 are set outside the tunnel 7. While protecting the tunnel 7 structure from instability, the overall structure of the tunnel 7 is not changed and the cross-section of the tunnel 7 is not reduced. This solves the problems of poor overall structure integrity and reduced cross-section of the tunnel 7 after reinforcement in traditional tunnel 7 protection measures.

[0053] This invention also provides a construction method for an inclined rigid sliding structure protecting a tunnel in a reverse fault, comprising: (a) excavating a foundation pit on the upper side of the tunnel 7; (b) using a pile driver to insert the lower halves of the first sliding block assembly 1 and the second sliding block assembly 2 into the soil at a preset angle; (c) filling soil to the right of the pre-insertion position of the second sliding block assembly 2 to form a right-side support for the second sliding block assembly 2; (d) installing the upper half of the second sliding block assembly 2; filling soil to the right of the pre-insertion position of the first sliding block assembly 1 (to the left of the second sliding block assembly 2) to form a right-side support for the first sliding block assembly 1; (e) installing the upper half of the first sliding block assembly 1; and (f) filling soil to the left of the position of the first sliding block assembly 1 and compacting it. This construction method can reduce the amount of excavated soil to reduce disturbance to the tunnel 7, improve the efficiency of inserting the sliding block assembly into the soil, and ensure the safety and efficiency of the construction process.

Claims

1. An inclined rigid sliding structure for protecting tunnels in reverse faults, characterized in that, It includes a first sliding block group and a second sliding block group, which are respectively disposed on both sides of the tunnel length direction; the first sliding block group and the second sliding block group are arranged parallel to each other; the top of the first sliding block group and the second sliding block group are flush with the ground surface, and the bottom of the first sliding block group and the second sliding block group are embedded in the stratum; The first and second sliding block groups are set at an angle relative to the ground surface; each of the first and second sliding block groups includes two sliding blocks that are slidably connected to each other.

2. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 1, characterized in that, The two sliding blocks in the first sliding block group and the second sliding block group are slidably connected by meshing steel teeth, and the sliding direction is the width direction of the first sliding block group and the second sliding block group.

3. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 2, characterized in that, Each sliding block is made of rigid steel sheet with a rectangular structure; the length direction of each sliding block is in the same direction as the length direction of the tunnel; the width direction of each sliding block is inclined relative to the ground surface. The first sliding block group and the second sliding block group are provided with meshing steel teeth between the two sliding blocks.

4. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 3, characterized in that, The meshing steel teeth include a plurality of protruding steel teeth that are evenly spaced apart, and an inner groove is formed between two adjacent protruding steel teeth; the inner surfaces of the two sliding blocks in the first sliding block group and the second sliding block group are each provided with a plurality of protruding steel teeth, and the length direction of each protruding steel tooth is in the same direction as the width direction of the first sliding block group and the second sliding block group. When the two sliding blocks in the first sliding block group and the second sliding block group are engaged, the protruding steel teeth are fitted into the concave tooth groove.

5. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 4, characterized in that, The top of each protruding steel tooth is rounded, and the interior of each concave tooth groove is set at a right angle.

6. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 1, characterized in that, Each sliding block is equipped with grouting holes extending from the top to the bottom.

7. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 1, characterized in that, Each sliding block has a built-in displacement sensor, and each displacement sensor is electrically connected to the back-end processor.

8. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 1, characterized in that, The bottom of both the first sliding block group and the second sliding block group is a cone-shaped structure with the tip pointing downwards.

9. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 6, characterized in that, The top of both the first sliding block group and the second sliding block group is provided with a waterproof rubber plate for sealing the multiple grouting holes and the gap between the two sliding blocks; The bottom of both the first and second sliding block groups is provided with an embedded rubber sleeve, which is located between the two sliding blocks in each sliding block group.

10. The inclined rigid sliding structure for protecting tunnels in reverse faults according to claim 1, characterized in that, The tunnel's burial depth is H b The diameter of the tunnel is D; the dip angle of the reverse fault is α; the first sliding block group is located on the left side of the tunnel length direction, and the shortest horizontal distance between the right sidewall of the first sliding block group and the outer wall of the tunnel is W1; The second sliding block group is located on the right side along the tunnel length direction; The shortest horizontal distance between the left sidewall of the second sliding block assembly and the outer wall of the tunnel is W2; the values ​​of W1 and W2 are: W1 = W2 = H b / 3; The vertical distance between the bottom of both the first and second sliding block groups and the ground surface is H. l H l The value of is: H l =3D; The angle between the first and second sliding block groups and the ground surface is θ, and the value of the angle θ is: θ = α + 15°.

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