All-around fault-preventing and breaking regulation device for cross-active fault tunnel

Abstract

The application discloses a kind of across active fault tunnel all-around error-proofing regulation and control device, including tunnel, inverted arch base and all-around error-proofing device, tunnel includes inner layer tunnel and outer layer tunnel of being set in inner layer tunnel, and outer layer tunnel is in the influence area in the active fault region of rock mass and in strong influence area, inner layer tunnel sequentially penetrates weak influence area, medium influence area and strong influence area;Inverted arch base is fixed in the inner wall of outer layer tunnel, and installation hole is formed in the top of inverted arch base;All-around error-proofing device has the damping along the longitudinal direction and transverse direction of tunnel, and all-around error-proofing device can move along the longitudinal direction and transverse direction of tunnel, to prevent inner layer tunnel from moving in longitudinal direction and transverse direction, and can be telescopic deformation according to the stress condition of all-around error-proofing device.This device, by regulating and preventing error of inner layer tunnel transverse, longitudinal, vertical, can resist fault to the stick-slip, near-fault vibration that exist larger deformation, to ensure operation safety further.

Description

Technical Field

[0001] This invention relates to the field of tunnel and underground engineering testing technology, specifically to a comprehensive anti-fault control device for tunnels crossing active faults. Background Technology

[0002] Active faults refer to faults that have been active since the Late Quaternary period. Influenced by the action of surrounding tectonic plates, active faults of various sizes are widely distributed in my country, especially in the western and southwestern regions. An active fault generally includes a fracture zone and active rock masses located to the left and right of the fracture zone. Furthermore, based on the distance from the fracture zone, the entire rock mass is divided into zones of strong influence, moderate influence, and weak influence.

[0003] Long tunnel projects in western China, especially those located in high-intensity earthquake zones, traverse multiple active fault zones, posing a serious threat to their safe operation. To improve tunnel safety, tunnels in areas of strong and moderate impact should be constructed as double-deck tunnels and equipped with comprehensive anti-fault control devices.

[0004] Current research indicates that the main sources of risk for tunnels crossing active faults include creep, stick-slip, and near-fault ground motion. Domestic scholars have conducted extensive research on fault-resistant design, using fault-prevention control devices to prevent faulting between upper tunnels. For example, Cui Guangyao et al. studied the fault-resistant performance of fiber-reinforced concrete linings, Xu Dingyu investigated the seismic performance of linings using high-strength steel reinforcement, and Li Peng proposed three fault-resistant design concepts: "articulated design," "over-excavation design," and "isolation and energy dissipation design." However, existing fault-resistant measures are only applicable to creep-like faulting with slow deformation of the surrounding rock; they are ineffective against stick-slip and near-fault ground motion with significant deformation. Furthermore, information cannot be obtained promptly after faulting occurs in the surrounding rock. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide an all-round anti-fault control device for tunnels across active faults, so as to solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention provides a comprehensive anti-fault control device for tunnels crossing active faults, comprising:

[0007] The tunnel includes an inner tunnel and an outer tunnel nested within the inner tunnel, wherein the outer tunnel penetrates the active fault region of the rock mass within the influence zone and the strong influence zone, and the inner tunnel sequentially penetrates the weak influence zone, the medium influence zone, and the strong influence zone.

[0008] An inverted arch base, fixed to the inner wall of the outer tunnel, with mounting holes at its top; and

[0009] An all-around anti-misalignment device, which has damping properties along the longitudinal and transverse directions of the tunnel, is supported and connected between the outer wall of the inner tunnel and the invert arch base, and can move along the longitudinal and transverse directions of the tunnel to prevent the inner tunnel from moving in the longitudinal and transverse directions, and can expand and contract according to the stress on the all-around anti-misalignment device.

[0010] Furthermore, the omnidirectional anti-misoperation device includes:

[0011] The telescopic connection mechanism includes a bottom connector, a top connector, and a telescopic member. The bottom connector is connected to the arch base and can move laterally along the tunnel. The top connector is connected to the outer wall of the inner tunnel and can move longitudinally along the tunnel. The telescopic member is connected between the bottom connector and the top connector and can extend and retract vertically along the tunnel.

[0012] Data processor;

[0013] A reaction force arrester is installed in the mounting hole and connected to the bottom connector and in communication with the data processor. It can prevent the telescopic connecting mechanism and the invert arch base from moving in the lateral direction along the tunnel.

[0014] A drive component is disposed on the bottom connector and connected to the telescopic connection mechanism and communicates with the data processor. It can drive the telescopic connection mechanism to extend or retract according to the force applied to the telescopic connection mechanism, thereby keeping the position of the inner tunnel unchanged.

[0015] Furthermore, the bottom connector includes a transverse guide rail, a base plate, and transverse rollers. There are multiple transverse guide rails, which are fixedly arranged on the invert arch base at intervals along the axial direction of the tunnel and extend along the tangential direction of the tunnel. The base plate is located above the invert arch base. Multiple transverse rollers are arranged at intervals on the lower surface of the base plate and are slidably engaged with the corresponding transverse guide rails. The bottom end of the telescopic member is connected to the base plate, and the reaction force arrester is connected to the base plate.

[0016] Furthermore, the top connector includes longitudinal guide rails and longitudinal rollers. There are two longitudinal guide rails, which are fixed opposite to each other on the surface of the inner tunnel. The longitudinal guide rails extend along the axial direction of the inner tunnel. The longitudinal rollers are connected to the top of the telescopic member and can roll and engage with the longitudinal guide rails.

[0017] Furthermore, the telescopic component includes a telescopic frame.

[0018] Furthermore, the drive assembly includes a jack, the bottom end of the telescopic frame is connected to the base plate, the top end of the telescopic frame is connected to the longitudinal roller, the jack is mounted on the base plate and connected to the telescopic frame, and the data processor is communicatively connected to the jack. When the force on the jack changes relative to the initial value, the data processor drives the jack to lift upward or retract until the force on the jack is restored.

[0019] Furthermore, the reaction force arrester includes a damping disc, which is disposed in the mounting hole, and a plurality of steel wire ropes of the damping disc are connected to the base plate. When the tension on the damping disc is greater than its threshold, the steel wire ropes are stretched outward.

[0020] Furthermore, there are multiple damping discs, which are spaced apart along the axial direction of the tunnel on the invert arch base.

[0021] The beneficial effects of this invention are:

[0022] The aforementioned all-around anti-fault control device for tunnels crossing active faults can maintain the inner tunnel stationary while the outer tunnel moves with the rock mass when the rock mass moves along the tunnel's lateral direction. This is because the all-around anti-fault device can move along the tunnel's lateral direction and has damping properties. Simultaneously, due to its damping properties, the device acts as a brake on the moving invert base as it moves with the outer tunnel, further ensuring the stability of the inner tunnel.

[0023] When the rock mass moves along the longitudinal direction of the tunnel, similarly, since the all-round anti-fault device can move along the longitudinal direction of the tunnel and has damping properties, it can keep the inner tunnel stationary while the outer tunnel moves along the rock mass. At the same time, since the all-round anti-fault device has damping properties, it acts as a brake on the invert base as the moving invert base moves with the outer tunnel, further ensuring the stability of the inner tunnel.

[0024] When the rock mass moves along the vertical direction of the tunnel, the pressure on the all-around anti-fault device changes in the vertical direction. The all-around anti-fault device will compensate for the change in distance between the inner and outer tunnels through expansion and contraction deformation, thereby restoring the stress on the all-around anti-fault device and ensuring that the position of the inner tunnel does not move.

[0025] By using this device, through the horizontal, longitudinal, and vertical control of the inner tunnel, it can not only effectively handle creep and slippage caused by slow deformation of the surrounding rock, but also resist slippage and near-fault vibration caused by large deformation, thereby reducing tunnel damage and ensuring operational safety. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0027] Figure 1 This is a schematic diagram of the tunnel within the rock mass;

[0028] Figure 2 This is a schematic diagram showing the distribution of the tunnel within the weak, medium, and strong influence zones of the rock mass.

[0029] Figure 3 This is a schematic diagram of an all-round anti-fault control device for tunnels crossing active faults, provided in an embodiment of the present invention.

[0030] Figure 4 for Figure 1 A schematic diagram of the invert arch base in a 360-degree anti-fault control device for tunnels crossing active faults is shown.

[0031] Figure 5 for Figure 1 The diagram shows a schematic of an all-round anti-fault control device for a cross-fault tunnel.

[0032] Figure label:

[0033] 100. Tunnel; 110. Inner tunnel; 120. Outer tunnel; 200. Invert arch base; 300. All-around anti-misalignment device; 310. Telescopic connection mechanism; 311. Bottom connector; 3111. Transverse guide rail; 3112. Base plate; 3113. Transverse roller; 312. Top connector; 3121. Longitudinal guide rail; 3122. Longitudinal roller; 313. Telescopic component; 320. Data processor; 330. Reaction arrestor; 331. Damping disc; 340. Drive assembly; 341. Jack. Detailed Implementation

[0034] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0035] Please see Figures 1 to 4 The present invention provides an all-round anti-fault control device for tunnels crossing active faults, including a tunnel 100, an inverted arch base 200 and an all-round anti-fault device 300.

[0036] Specifically, tunnel 100 includes an inner tunnel 110 and an outer tunnel 120 nested within the inner tunnel 110. The outer tunnel 120 penetrates the medium-affect zone and the strong-affect zone of the active fault area of ​​the rock mass, while the inner tunnel 110 sequentially penetrates the weak-affect zone, the medium-affect zone, and the strong-affect zone.

[0037] During construction, the outer tunnel 120, which runs through the active fault zone of the rock mass, is constructed first, covering the medium and strong impact zones. Then, the inner tunnel 110 is constructed. The inner tunnel 110 can be constructed by splicing multiple sections together.

[0038] The invert base 200 is fixed to the inner wall of the outer tunnel 120, and the top of the invert base 200 has an installation hole. The omnidirectional anti-misalignment device 300 has damping properties along the longitudinal and transverse directions of the tunnel. The omnidirectional anti-misalignment device 300 supports and connects between the outer wall of the inner tunnel 110 and the invert base 200, and can move along the longitudinal and transverse directions of the tunnel, thereby preventing the inner tunnel 110 from moving in the longitudinal and transverse directions, and can expand and contract according to the stress on the omnidirectional anti-misalignment device 300.

[0039] During construction, the inverted arch base 200 is first laid and fixed on the inner wall of the outer tunnel 120. Then, the all-round anti-misalignment device 300 is installed between the outer wall of the inner tunnel 110 and the inverted arch base 200.

[0040] When the rock mass moves along the transverse direction of the tunnel, the omnidirectional anti-fault device 300, which can move along the transverse direction of the tunnel and has damping properties, can keep the inner tunnel 110 stationary while the outer tunnel 120 moves with the rock mass. Simultaneously, because the omnidirectional anti-fault device 300 has damping properties, it acts as a brake on the moving invert base 200 as it moves with the outer tunnel 120, further ensuring the stability of the inner tunnel 110.

[0041] When the rock mass moves along the longitudinal direction of the tunnel, similarly, because the omnidirectional anti-fault device 300 can move along the longitudinal direction of the tunnel and has damping properties, it can keep the inner tunnel 110 stationary while the outer tunnel 120 moves with the rock mass. At the same time, because the omnidirectional anti-fault device 300 has damping properties, it acts as a brake on the invert base 200 as it moves with the outer tunnel 120, further ensuring the stability of the inner tunnel 110.

[0042] When the rock mass moves along the vertical direction of the tunnel, the pressure on the omnidirectional anti-fault device 300 changes in the vertical direction. The omnidirectional anti-fault device 300 will compensate for the change in distance between the inner and outer tunnels 120 by expanding and contracting, thereby restoring the stress state of the omnidirectional anti-fault device 300 and ensuring that the position of the inner tunnel 110 does not move.

[0043] By using this device to regulate and prevent slippage in the lateral, longitudinal, and vertical directions of the inner tunnel, it can not only effectively address creep slippage caused by slow deformation of the surrounding rock, but also resist slippage and near-fault vibration caused by large deformation, thereby reducing tunnel damage and ensuring operational safety.

[0044] Specifically, the all-around anti-misoperation device 300 includes a telescopic connection mechanism 310, a data processor 320, a reaction force arrester 330, and a drive assembly 340.

[0045] The telescopic connection mechanism 310 includes a bottom connector 311, a top connector 312, and a telescopic member 313. The bottom connector 311 is connected to the arch base 200 and can move laterally along the tunnel 100. The top connector 312 is connected to the outer wall of the inner tunnel 110 and can move longitudinally along the tunnel 100. The telescopic member 313 is connected between the bottom connector 311 and the top connector 312, and the telescopic member 313 can expand and contract vertically along the tunnel.

[0046] The reaction force arrester 330 is installed in the mounting hole and connected to the bottom connector 311, and communicates with the data processor 320. It can prevent the telescopic connecting mechanism 310 from moving laterally along the tunnel between the invert arch bases 200. The drive assembly 340 is installed on the bottom connector 311 and connected to the telescopic connecting mechanism 310, and communicates with the data processor 320. It can drive the telescopic connecting mechanism 310 to extend or retract according to the force applied to it, thereby keeping the position of the inner tunnel 110 unchanged.

[0047] When the outer tunnel 120 moves in the lateral direction along the tunnel 100, the data processor 320 receives the information and drives the reaction force arrestor 330 to start. Under the action of the reaction force arrestor 330, the entire telescopic connection mechanism 310 remains in a fixed position, and the bottom of the arch base 200 moves relative to the connecting piece, thus ensuring that the inner tunnel 110 remains stationary.

[0048] When the outer tunnel 120 moves along the vertical direction of the tunnel 100, the data processor 320 receives the information and starts the drive component 340. The drive component 340 drives the telescopic component 313 to extend and retract to compensate for the change in distance between the inner and outer tunnels 120, thus keeping the inner tunnel 110 stationary.

[0049] In this embodiment, the bottom connector 311 includes a transverse guide rail 3111, a base plate 3112, and transverse rollers 3113. Multiple transverse guide rails 3111 are fixedly arranged on the invert arch base 200 at intervals along the axial direction of the tunnel 100, and extend along the tangential direction of the tunnel. The base plate 3112 is located above the invert arch base 200. Multiple transverse rollers 3113 are spaced apart on the lower surface of the base plate 3112 and slidably engaged with their corresponding transverse guide rails 3111. During movement, the transverse guide rails 3111 guide the transverse rollers 3113. Alternatively, in other embodiments, guide grooves extending along the transverse direction of the tunnel 100 can be formed on the upper surface of the invert arch base 200, which can also serve to guide the transverse rollers 3113. The bottom end of the telescopic member 313 is connected to the base plate 3112, and the reaction force arrester 330 is connected to the base plate 3112.

[0050] In this embodiment, the top connector 312 includes a longitudinal guide rail 3121 and a longitudinal roller 3122. There are two longitudinal guide rails 3121, which are fixed opposite to each other on the surface of the inner tunnel 110. The longitudinal guide rails 3121 extend axially along the inner tunnel 110. The longitudinal roller 3122 is connected to the top of the telescopic member 313 and can roll and engage with the longitudinal guide rail 3121. Similarly, a guide groove extending along the longitudinal direction of the tunnel 100 can also be formed on the upper surface of the inner tunnel 110, which can also serve to guide the longitudinal roller 3122.

[0051] In this embodiment, the telescopic component 313 includes a telescopic frame. The telescopic frame can be a commonly used telescopic frame in the prior art. Of course, in other embodiments, the telescopic component 313 can also be other telescopic parts, such as a telescopic sleeve.

[0052] The drive assembly 340 includes a jack 341, the bottom end of a telescopic frame is connected to a base plate 3112, the top end of the telescopic frame is connected to a longitudinal roller 3122, the jack 341 is mounted on the base plate 3112 and connected to the telescopic frame, and the data processor 320 is communicatively connected to the jack 341. When the pressure value of the jack 341 changes relative to the initial value, the data processor 320 drives the jack 341 to lift upward or retract until the force on the jack 341 is restored.

[0053] The working principle of the data processor 320 is as follows:

[0054] First, the pressure value of jack 341 is set in the data processor 320. When the outer tunnel 120 deforms with the surrounding rock, the pressure of jack 341 will change accordingly. When the pressure of jack 341 increases, it means that the surrounding rock is starting to move upward. At this time, the data processor 320 issues a command to restore the pressure of jack 341 to the original threshold. At this time, the telescopic frame will be vertically compressed to ensure that the inner tunnel 110 remains in place. Similarly, when the pressure of jack 341 decreases, it means that the surrounding rock is starting to move downward. At this time, the data processor 320 issues a command to restore the pressure of jack 341 to the original threshold. At this time, the telescopic frame will be vertically extended to ensure that the inner tunnel 110 remains in place.

[0055] In practical implementation, the data processor 320 can be a microcontroller commonly used in existing technologies. The control system of the data processor 320 can run Windows 10 or later, with Microsoft Visual Studio 2019 as the development environment, and developed using the C language. The control system of the data processor 320 should have the following functions: acquiring data before tunnel construction and real-time monitoring of the tunnel during operation; if any abnormalities are detected, they should be transmitted to the staff's computer via a remote output device to notify the railway bureau, readjust the train route, and prevent accidents.

[0056] In this embodiment, the drive assembly 340 includes a jack 341, the bottom end of the telescopic frame is connected to the base plate 3112, the top end of the telescopic frame is connected to the longitudinal roller 3122, the jack 341 is mounted on the base plate 3112 and connected to the telescopic frame, and the data processor 320 is communicatively connected to the jack 341. When the force on the jack 341 changes relative to the initial value, the data processor 320 drives the jack 341 to lift upward or retract until the force on the jack 341 is restored.

[0057] The reaction force arrester 330 includes a damping disc 331, which is installed in a mounting hole. Multiple steel wire ropes of the damping disc 331 are connected to the base plate 3112. When the tension on the damping disc 331 exceeds its threshold, the steel wire ropes are stretched outwards. In practice, multiple damping discs 331 can be used, spaced apart along the tunnel axis on the invert arch base 200.

[0058] In the control system of data processor 320, the first step is to select the dimensions, cross-sectional form, and materials of the tunnel and the all-round anti-fault structure control device based on the known data required by the system. After the selection is completed, the installation of the all-round anti-fault control device for the entire cross-active fault tunnel begins. During the tunnel operation period, the early warning interface and control interface of the control system must be monitored at all times. The early warning interface monitors the elongation and shortening values ​​of multiple steel wire ropes of the damping disc 331 in real time, monitors the height of the telescopic frame, monitors the position of the entire device and the distance from the critical surface. The control interface shows the number of tunnel movements and the distance of movement. Monitoring these values ​​can ensure the safety of the tunnel during the operation period.

[0059] Here, the control system of the data processor 320 will be described in detail:

[0060] 1) The information management interface of the control system serves as the software's entry point. The primary function of the account registration interface is to provide users with their own account information and allow them to quickly access and use the software. Therefore, this interface should generally be designed to be as clear and concise as possible. The information management interface of the control system includes: user type and account input. User types include administrators, construction personnel, and back-end personnel. Account input mainly consists of password input and forgotten password options.

[0061] 2) After successful login, the user will be redirected to the input interface, which mainly includes five parts: geotechnical investigation information input, hydrological conditions input, parameters of projects under construction or completed in the attachment, pressure threshold input of jack 341, and counter-tension threshold input of reaction force arrester 330.

[0062] 3) After completing the input interface operations, click the "Next" button in the lower left corner to automatically save all input interface operations. The interface will then jump to the intelligent design interface, which mainly consists of two parts. First, it determines the tunnel lining support type and size based on the surrounding rock grade, geological data of the fractured zone, and the activity level of the active rock mass, thereby obtaining the dimensions of the all-round anti-fault structure. Second, it determines the length of the double-layer tunnel based on the scope of the affected area and the form of the tunnel cross-section, obtaining the length of the transverse track and the movable range of the vertical deformation support.

[0063] 4) After clicking the "Next" button, the operating system interface will jump to the intelligent material selection interface. The intelligent material selection interface first determines the materials for the all-around anti-fault structure and the rollers based on the cross-sectional area difference between the inner tunnel 110 and the outer tunnel 120, the grade of the surrounding rock and the fracture condition of the surrounding rock in the fracture zone, the lining support type and lining thickness of the outer tunnel 120, and the activity level of the active rock mass. Before determining the materials for the entire all-around anti-fault control device across the active fault tunnel, the required strength of the entire all-around anti-fault control device structure should be determined. In this system, the strength is divided into four levels from strongest to weakest. Level 1: high-strength steel; Level 2: low-alloy high-strength steel; Level 3: high-strength structural steel; Level 4: ordinary structural steel. The dimensions of these four levels are customized according to the actual tunnel dimensions. Before determining the materials of the transverse roller 3113 and the longitudinal roller 3122, the sliding force of the transverse guide rail 3111 and the longitudinal guide rail 3121 must be calculated first. The maximum value of the sliding force of the transverse guide rail 3111 and the longitudinal guide rail 3121 is taken and multiplied by the safety factor to obtain the shear force of the roller in the vertical direction along the roller axis. The material of the roller is determined based on the magnitude of this shear force.

[0064] 5) Click Next to enter the warning interface. This interface is the most important interface during the tunnel operation period. This interface can monitor the elongation and shortening values ​​of the steel strands in real time, monitor the height of the vertical movable support, and display the position of the anti-fault device and the distance from the critical surface at all times.

[0065] 6) Click Next to enter the control interface. The control interface consists of three main parts. The first part is the re-editing area, where you can re-edit the interface that has already been edited. The second part records the number of movements of the all-around anti-fault structure, mainly recording the movement time and distance. The third part is the periodic maintenance record. In the middle of the interface, there is a Start Run button. Click this button to start the system.

[0066] The specific principle of the all-round anti-fault control device for this cross-active fault tunnel is as follows:

[0067] In active fault zones, the boundaries of strong, medium, and weak influence zones are first determined, followed by the construction of inner and outer tunnels. During operation, the data processor 320 monitors the displacement of the outer tunnel 120 caused by rock mass movement. The damping disc 331 is a large-mass disc. When the outer tunnel 120 experiences lateral and longitudinal displacement, the tension on the damping disc 331 must exceed its set threshold before the all-around anti-fault control device begins to move relative to the invert arch base 200. After the movement stops, the damping disc 331 acts as a brake, preventing the entire control device from sliding arbitrarily. When the outer tunnel 120 experiences vertical displacement, the pressure of the jack 341 changes accordingly. At this time, the data processor 320 issues a command to restore the pressure of the jack 341 to its original threshold. The movable support will then vertically compress or extend, ensuring the inner tunnel 110 remains stationary.

[0068] By using this device, through the horizontal, longitudinal, and vertical control of the inner tunnel, it can not only be effectively applied to creep and slippage caused by slow deformation of the surrounding rock, but also resist slippage and near-fault earthquakes with large deformation, thereby reducing tunnel damage and ensuring operational safety.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A 360° anti-fault control device for tunnels crossing active faults, characterized in that, include: The tunnel includes an inner tunnel and an outer tunnel nested within the inner tunnel, wherein the outer tunnel penetrates the active fault region of the rock mass within the influence zone and the strong influence zone, and the inner tunnel sequentially penetrates the weak influence zone, the medium influence zone, and the strong influence zone. An inverted arch base is fixed to the inner wall of the outer tunnel, and an installation hole is provided on the top of the inverted arch base; and An all-around anti-misalignment device, which has damping properties along the longitudinal and transverse directions of the tunnel, supports and connects the outer wall of the inner tunnel to the invert arch base, and can move along the longitudinal and transverse directions of the tunnel, thereby preventing the inner tunnel from moving in the longitudinal and transverse directions, and can expand and contract according to the stress on the all-around anti-misalignment device. The all-around anti-misalignment device includes: The telescopic connection mechanism includes a bottom connector, a top connector, and a telescopic member. The bottom connector is connected to the arch base and can move laterally along the tunnel. The top connector is connected to the outer wall of the inner tunnel and can move longitudinally along the tunnel. The telescopic member is connected between the bottom connector and the top connector and can extend and retract vertically along the tunnel. Data processor; A reaction force arrester is installed in the mounting hole and connected to the bottom connector and in communication with the data processor. It can prevent the telescopic connecting mechanism and the invert arch base from moving in the lateral direction along the tunnel. A drive component is disposed on the bottom connector and connected to the telescopic connection mechanism and communicates with the data processor. It can drive the telescopic connection mechanism to extend or retract according to the force applied to the telescopic connection mechanism, thereby keeping the position of the inner tunnel unchanged. The reaction force arrester includes a damping disc, which is disposed in the mounting hole, and multiple steel wire ropes of the damping disc are connected to the bottom connector. When the tension on the damping disc is greater than its threshold, the steel wire ropes are stretched outward.

2. The all-around anti-misalignment control device for tunnels crossing active faults according to claim 1, characterized in that, The bottom connector includes a transverse guide rail, a base plate, and transverse rollers. There are multiple transverse guide rails, which are fixed at intervals along the axial direction of the tunnel on the invert arch base and extend along the tangential direction of the tunnel. The base plate is located above the invert arch base. Multiple transverse rollers are spaced apart on the lower surface of the base plate and are slidably engaged with their corresponding transverse guide rails. The bottom end of the telescopic member is connected to the base plate, and the reaction force arrester is connected to the base plate.

3. The all-around anti-fault control device for tunnels crossing active faults according to claim 2, characterized in that, The top connector includes longitudinal guide rails and longitudinal rollers. There are two longitudinal guide rails, which are fixed opposite to each other on the surface of the inner tunnel. The longitudinal guide rails extend along the axial direction of the inner tunnel. The longitudinal rollers are connected to the top of the telescopic member and can roll and engage with the longitudinal guide rails.

4. The all-around anti-fault control device for tunnels crossing active faults according to claim 3, characterized in that, The telescopic component includes a telescopic frame.

5. The all-around anti-fault control device for tunnels crossing active faults according to claim 4, characterized in that, The drive assembly includes a jack, the bottom end of the telescopic frame is connected to the base plate, the top end of the telescopic frame is connected to the longitudinal roller, the jack is mounted on the base plate and connected to the telescopic frame, and the data processor is communicatively connected to the jack. When the force on the jack changes relative to the initial value, the data processor drives the jack to lift upward or retract until the force on the jack is restored.

6. The all-around anti-misalignment control device for tunnels crossing active faults according to claim 2, characterized in that, There are multiple damping discs, which are spaced apart along the axial direction of the tunnel on the invert arch base.

Images