Supporting structure suitable for tunnel curved surface monitoring and dynamic adjustment

Abstract

The invention discloses a supporting structure suitable for tunnel curved surface monitoring and dynamic adjustment, and relates to the technical field of tunnel supporting structures.The supporting structure comprises supporting steel frames and right-angle connecting frames, the right-angle connecting frames are arranged in a left-right symmetry mode, and the supporting steel frames are erected on the right-angle connecting frames through adjusting assemblies; multiple sets of supporting units are arranged between the supporting steel frames, multiple sets of anti-settling parts are arranged at the bottom of the positioning frame, each anti-settling part comprises a lower settling column, the lower end of the lower settling column is embedded into soil, a liquid cavity and a storage cavity are formed in the lower settling column, and a liquid guiding assembly is arranged between the storage cavity and the liquid cavity; liquid in the storage cavity can enter the liquid cavity with the reduced pressure intensity under the action of the liquid guide assembly, and a plurality of sets of locking blocks are arranged in the liquid cavity. According to the device, the anti-sedimentation part serves as a bottom support, the influence of sedimentation on the positions of the supporting steel frame and the monitoring equipment is reduced, and the stability of tunnel supporting and the accuracy of monitoring information are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel support structures, and in particular to a support structure suitable for tunnel curved surface monitoring and dynamic adjustment. Background Art

[0002] During tunnel excavation, in order to maintain the stability of the tunnel excavation, a support structure is required in the excavation section to support the tunnel, and monitoring equipment is installed on it to monitor the cross-sectional dimensions, axis deviation and surface flatness inside the tunnel for inspection. At the same time, it is necessary to dynamically monitor changes in the tunnel, such as the settlement of the vault and floor in the tunnel, the relative displacement between two points in the tunnel cross section, and strain and stress changes.

[0003] Most supporting structures in tunnels are fixed by columns drilled into the ground. When settlement occurs, the supporting structure will also move, causing the supporting structure to misalign the tunnel, reducing the supporting capacity, and even further causing the collapse of the tunnel. In addition, most unmanned monitoring equipment is fixedly installed on the supporting structure. When settlement occurs, the monitoring equipment on the supporting structure moves, causing the monitoring position of the monitoring equipment to change, thereby increasing the information variables obtained by the monitoring equipment and reducing the accuracy of the information obtained. Summary of the Invention

[0004] The technical problem of the present invention is to provide a support structure suitable for tunnel surface monitoring and dynamic adjustment, using anti-settlement parts as bottom support to reduce the impact of settlement on the support steel frame and the position of monitoring equipment, thereby ensuring the stability of tunnel support and the accuracy of monitoring information.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a support structure suitable for monitoring and dynamically adjusting a tunnel curved surface, comprising a supporting steel frame and a right-angle connecting frame, wherein the right-angle connecting frame is provided with multiple groups and is bilaterally symmetrically arranged, the supporting steel frame is erected on the right-angle connecting frame through an adjustment assembly, multiple groups of supporting units are arranged between the supporting steel frames, the multiple groups of the right-angle connecting frames are fixed inside the tunnel through a positioning frame, and the bottom of the positioning frame is provided with multiple groups of anti-settling parts, and the anti-settling parts include:

[0006] A lower settlement column, wherein the lower end of the lower settlement column is buried in the soil, a liquid cavity and a storage cavity are provided in the lower settlement column, a liquid guide component is provided between the storage cavity and the liquid cavity, and the liquid in the storage cavity can enter the liquid cavity with reduced pressure under the action of the liquid guide component, and multiple sets of locking blocks are provided in the liquid cavity;

[0007] An upper fixing rod, wherein the upper end of the upper fixing rod is fixedly connected to the positioning frame, and the lower end is embedded in the liquid cavity, and the locking block contacts the surface of the upper fixing rod under the action of hydraulic pressure.

[0008] As a further solution of the present invention, the upper fixed rod is provided with a truncated cone-shaped lower inclined section and a cylindrical upper vertical section. The upper vertical section is slidably connected to the upper end of the lower sedimentation column and a sealing gasket is provided at the connection. A positioning base is fixedly installed at the bottom of the liquid chamber, and the locking block is slidably connected to the positioning base. The inner side of the locking block can fit the surface of the lower inclined section.

[0009] As a further solution of the present invention, the liquid guiding assembly includes a one-way valve, an embedded section and a negative pressure valve. The upper end of the embedded section is embedded in the upper fixed rod, and a resistance plug is fixedly installed at the lower end. The lower end of the resistance plug is fixedly connected to the middle position of the positioning base. A main output pipe is opened between the storage cavity and the positioning base. Side overflow pipes are provided at the edges of the main output pipe corresponding to the adjacent gaps of the locking blocks. The one-way valve is fixedly installed in the side overflow pipe. The one-way valve can allow the liquid in the main output pipe to overflow into the liquid cavity. The negative pressure valve is fixedly installed in the main output pipe.

[0010] As a further solution of the present invention, the supporting steel frame includes two groups of intermediate arch frames and four groups of side support frames. The intermediate arch frames are arched, and their two ends are respectively connected to the upper right-angle sides of the left and right groups of right-angle connecting frames. The other right-angle sides of the right-angle connecting frames are slidably connected to the side support frames, and the lower ends of the side support frames are fixedly installed with positioning columns, and the lower ends of the positioning columns are embedded below the ground. The adjusting assembly includes an adjusting motor, and the adjusting motors are provided in two groups and are respectively installed at the two ends of the right-angle connecting frames. The output ends of the adjusting motors are fixedly installed with threaded rods, and the threaded rods are rotatably installed inside the right-angle sides of the right-angle connecting frames and are threadedly connected to the intermediate arch frames and the side support frames.

[0011] As a further solution of the present invention, the support unit includes a rotating seat, which is installed on the supporting steel frame, and a main support shaft is rotatably installed between the symmetrically arranged rotating seats. Both ends of the main support shaft are fixedly installed with connecting seats, and multiple groups of side support shafts are rotatably installed between the two groups of connecting seats. Multiple groups of support members are fixedly installed on the side support shafts, and the ends of the support members away from the side support shafts are set to be cylindrical. The support members on adjacent side support shafts are connected in pairs by telescopic curved rods, and locking members are fixedly installed in the connecting seats, and the locking members can rotate and lock the side support shafts.

[0012] As a further solution of the present invention, the positioning frame includes an upper mounting column, a lower adjustment seat and a splicing base plate. The upper end of the upper mounting column is fixedly connected to the right-angle connecting frame, and the lower end thereof is fixedly connected to the lower adjustment seat. The splicing base plates are provided in multiple groups and can be spliced ​​with each other. The spliced ​​splicing base plates are fixedly connected to the lower adjustment seat by bolts, and the upper end of the upper fixing rod is fixedly connected to the lower surface of the splicing base plate.

[0013] As a further solution of the present invention, a mounting platform is fixedly mounted on the upper end of the upper mounting column, and a monitoring component is provided on the mounting platform. The monitoring component includes radar monitoring equipment, three-dimensional laser scanning equipment and an automated monitoring system.

[0014] As a further solution of the present invention, rotating motor 1 and rotating motor 2 are fixedly installed in the connecting seat, the output end of rotating motor 1 is fixedly connected to the side support shaft, and rotating motor 2 can drive the locking member to rotate through a transmission gear.

[0015] As a further solution of the present invention, a protective shell is provided on the outside of the monitoring component, a moisture-proof pad is provided on the outside of the heat dissipation port of the protective shell, the lower surface of the splicing base plate is connected to the upper fixed rod by bolts and multiple groups of lower fixed rods are equidistantly arranged below it.

[0016] As a further solution of the present invention, the lower adjustment seat is formed by splicing together the upper and lower sections. The bottom of the lower section of the lower adjustment seat is provided with a bolt hole, and the top is provided with a protruding thread. The bottom of the upper section of the lower adjustment seat is provided with a thread groove that matches the protruding thread, and the top is fixedly connected to the upper mounting column.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] When the soil in the tunnel settles, the lower settlement column moves down with the settlement. Since the settlement is generally small and takes a long time to accumulate, the upper fixed rod maintains its original height under the action of inertia when it descends. At this time, the liquid cavity space becomes larger, the pressure is reduced, and the locking effect of the locking block on the upper fixed rod is reduced. The liquid guide assembly changes with the pressure, allowing the liquid in the storage cavity to enter the liquid cavity. By replenishing the liquid entering, the liquid cavity reaches the original pressure again, and then the locking block locks the position of the upper fixed rod again, thereby completing the long-term support of the upper fixed rod. Furthermore, when the soil settles, the height of the positioning frame above the upper fixed rod is not affected, so that the right-angle connecting frame will not produce a large height difference with the soil settlement during the long-term monitoring support process, thereby ensuring the stability and firmness of the support structure, ensuring the consistency of the data collection points before and after the monitoring data, and increasing the accuracy of the acquired monitoring data.

[0019] 2. When the supporting structure needs to be dynamically adjusted during the monitoring process, the present invention can adjust the motor and the cooperation between the motor and the threaded rod to adjust the relative height of the side support frame and the right-angle connecting frame, so that the side support frame can adapt to the vertical convergence of the inner wall of the tunnel, and the position of the middle arch frame in the right-angle connecting frame can be adjusted to adapt to the convergence and change of direction of the tunnel vault, thereby realizing dynamic adjustment of the internal support of the tunnel and avoiding the trouble of long-term manual supervision. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A partial schematic diagram of the structure at point A;

[0023] Figure 3 Schematic diagram of the structure of the support unit in the present invention;

[0024] Figure 4 Schematic diagram of the structure of the anti-settling member in the present invention;

[0025] Figure 5 It is a structural cross-sectional view of the anti-settling member in the present invention;

[0026] Figure 6 It is a structural cross-sectional view of the supporting steel frame in the present invention.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Support steel frame; 101. Middle arch frame; 102. Side support frame; 2. Positioning column; 3. Splicing base plate; 4. Lower adjustment seat; 5. Upper mounting column; 6. Right-angle connecting frame; 7. Lower settlement column; 701. Locking block; 702. Liquid chamber; 703. Storage chamber; 704. Positioning base; 705. Interference plug; 706. One-way valve; 707. Embedded section; 708. Main output pipe; 709. Negative pressure valve; 8. Rotating seat; 9. Main support shaft; 10. Support member; 11. Connecting seat; 12. Mounting platform; 13. Monitoring component; 14. Upper fixed rod; 1401. Lower inclined section; 1402. Upper vertical section; 15. Side support shaft; 16. Telescopic curved rod; 17. Locking member; 18. Adjustment motor. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] See also Figures 1-6 The present invention provides a technical solution: a support structure suitable for monitoring and dynamically adjusting the curved surface of a tunnel, comprising a support steel frame 1 and a right-angle connecting frame 6, wherein the right-angle connecting frame 6 is provided with multiple groups and is arranged symmetrically on both sides, the support steel frame 1 is mounted on the right-angle connecting frame 6 through an adjustment component, multiple groups of support units are arranged between the support steel frames 1, the multiple groups of right-angle connecting frames 6 are fixed inside the tunnel through a positioning frame, and multiple groups of anti-settling parts are provided at the bottom of the positioning frame, and the anti-settling parts include:

[0031] The lower end of the lower sinking column 7 is buried in the soil. A liquid cavity 702 and a storage cavity 703 are provided in the lower sinking column 7. A liquid guide component is provided between the storage cavity 703 and the liquid cavity 702. The liquid in the storage cavity 703 can enter the liquid cavity 702 with reduced pressure under the action of the liquid guide component. Multiple sets of locking blocks 701 are provided in the liquid cavity 702.

[0032] The upper fixing rod 14 has its upper end fixedly connected to the positioning frame, and its lower end is embedded in the liquid cavity 702 . The locking block 701 contacts the surface of the upper fixing rod 14 under the action of hydraulic pressure.

[0033] During operation, the present invention fixes the position of the right-angle connecting frame 6 by the positioning frame, and then adjusts the position of the supporting steel frame 1 by the adjustment component, so that the supporting units on the supporting steel frame 1 can all be supported on the inside of the tunnel, and the bottom of the positioning frame is supported by the anti-settling member formed by the lower settlement column 7 and the upper fixing rod 14. The bottom of the lower settlement column 7 is buried in the soil as a support and fixation, and the lower end of the upper fixing rod 14 is embedded in the lower settlement column 7, and the upper end serves as the support of the bottom of the fixing frame. There is a liquid cavity 7 inside the lower settlement column 7. 02 and storage, the liquid in the storage chamber 703 can enter the liquid chamber 702 with reduced pressure through the liquid guide component, driving the locking block 701 in the liquid chamber 702 to move. When the upper and lower ends of the upper fixing rod 14 are embedded in the liquid chamber 702, the locking block 701 contacts the surface of the upper fixing rod 14 under the action of hydraulic pressure (the inverted frustum-shaped lower inclined section 1401 utilizes the "inclined surface effect". When the locking block 701 is pushed by the hydraulic pressure, it squeezes the upper fixing rod 14 along the inclined surface. The pressure of the locking block 701 can prevent the upper fixing rod 14 from moving downward. When the soil settles inside the tunnel, the lower settlement column 7 moves downward with the settlement. Since the settlement is generally small and takes a long time to accumulate, the upper fixed rod 14 maintains its original height under the action of inertia when descending. At this time, the space of the liquid chamber 702 becomes larger and the pressure decreases. The locking effect of the locking block 701 on the upper fixed rod 14 is reduced. As the pressure changes, the liquid in the storage chamber 703 enters the liquid chamber 702. By replenishing the liquid, the liquid chamber 702 reaches the original pressure again, and the locking block 701 locks the position of the upper fixed rod 14 again, thereby completing the long-term support of the upper fixed rod 14. As the soil settles, the height of the positioning frame above the upper fixed rod 14 is not affected, so that the right-angle connecting frame 6 will not produce a large height difference with the soil settlement during the long-term monitoring support process, thereby ensuring the stability and firmness of the support structure and ensuring the consistency of the data collection points before and after the monitoring data, thereby increasing the accuracy of the acquired monitoring data.

[0034] As a further solution of the present invention, the upper fixed rod 14 is provided with a conical lower inclined section 1401 and a cylindrical upper vertical section 1402. The upper vertical section 1402 is slidingly connected to the upper end of the lower sedimentation column 7 and a sealing gasket is provided at the connection. A positioning base 704 is fixedly installed at the bottom of the liquid chamber 702. The locking block 701 is slidingly connected to the positioning base 704, and the inner side of the locking block 701 can fit the surface of the lower inclined section 1401.

[0035] During operation, the inverted frustum-shaped lower inclined section 1401 of the present invention utilizes the "inclined surface effect". When the locking block 701 is pushed by hydraulic pressure, it squeezes the upper fixing rod 14 along the inclined surface. The pressure of the locking block 701 can prevent the upper fixing rod 14 from moving downward.

[0036] As a further solution of the present invention, the liquid guiding assembly includes a one-way valve 706, an embedded section 707 and a negative pressure valve 709. The upper end of the embedded section 707 is embedded in the upper fixed rod 14, and a resistance plug 705 is fixedly installed at its lower end. The lower end of the resistance plug 705 is fixedly connected to the middle position of the positioning base 704. A main output pipe 708 is opened between the storage chamber 703 and the positioning base 704. Side overflow pipes are provided at the edges of the main output pipe 708 corresponding to the adjacent gaps of the locking block 701. The one-way valve 706 is fixedly installed in the side overflow pipe. The one-way valve 706 can allow the liquid in the main output pipe 708 to overflow into the liquid chamber 702. The negative pressure valve 709 is fixedly installed in the main output pipe 708.

[0037] During operation, when the present invention settles, the lower settling column 7 moves downward, and the upper fixed rod 14 is partially withdrawn from the liquid cavity, so that the pressure in the liquid cavity 702 is reduced, so that the liquid in the storage cavity 703 passes through the negative pressure valve 709 and enters the side overflow pipe, and then enters the liquid cavity 702 through the one-way valve 706.

[0038] As a further solution of the present invention, the supporting steel frame 1 includes two groups of intermediate arch frames 101 and four groups of side support frames 102. The intermediate arch frame 101 is arched and its two ends are respectively connected to the upper right-angle sides of the left and right groups of right-angle connecting frames 6. The other right-angle sides of the right-angle connecting frames 6 are slidably connected to the side support frames 102. The lower ends of the side support frames 102 are fixedly installed with positioning columns 2, and the lower ends of the positioning columns 2 are embedded below the ground. The adjustment component includes an adjustment motor 18. The adjustment motor 18 is provided with two groups and is respectively installed at both ends of the right-angle connecting frame 6. The output ends of the adjustment motor 18 are fixedly installed with threaded rods, which are rotatably installed inside the right-angle sides of the right-angle connecting frame 6 and are threadedly connected to the intermediate arch frame 101 and the side support frame 102.

[0039] During operation, when the present invention needs to dynamically adjust the support structure during the monitoring process, the motor 18 can be adjusted. By adjusting the cooperation between the motor 18 and the threaded rod, the relative height of the side support frame 102 and the right-angle connecting frame 6 can be adjusted, so that the side support frame 102 can adapt to the vertical convergence of the inner wall of the tunnel, and the position of the middle arch frame 101 on the right-angle connecting frame 6 can be adjusted to adapt to the convergence and change of direction of the tunnel vault, thereby realizing dynamic adjustment of the internal support of the tunnel and avoiding the trouble of long-term manual supervision.

[0040] As a further solution of the present invention, the support unit includes a rotating seat 8, which is installed on the supporting steel frame 1. A main support shaft 9 is rotatably installed between the symmetrically arranged rotating seats 8. Connecting seats 11 are fixedly installed at both ends of the main support shaft 9. Multiple groups of side support shafts 15 are rotatably installed between the two groups of connecting seats 11. Multiple groups of support members 10 are fixedly installed on the side support shaft 15. The end of the support member 10 away from the side support shaft 15 is set to a cylindrical shape. The support members 10 on adjacent side support shafts 15 are connected in pairs by telescopic curved rods 16. Locking members 17 are fixedly installed in the connecting seat 11, and the locking members 17 can rotate and lock the side support shaft 15.

[0041] During operation, the main support shaft 9 between the connecting seats 11 of the present invention serves as the main carrier of the tunnel support. When the support structure is installed, the side support shaft 15 is rotated so that the upper end of the support member 10 on the side support shaft 15 can be in contact with the inner wall of the tunnel. By adjusting the angle of the side support shaft 15, the support member 10 can fit the inner wall of the tunnel more closely. When bulges and cracks appear on the inner wall of the tunnel, the support point can also be adjusted by rotating the main support shaft 9 and the side support shaft 15, so that the support can fit the inner wall of the tunnel more closely, thereby increasing the curved surface adaptability of the equipment and meeting the dynamic adjustment requirements of the support structure.

[0042] As a further solution of the present invention, the positioning frame includes an upper mounting column 5, a lower adjustment seat 4 and a splicing base plate 3. The upper end of the upper mounting column 5 is fixedly connected to the right-angle connecting frame 6, and the lower end thereof is fixedly connected to the lower adjustment seat 4. The splicing base plates 3 are provided with multiple groups and can be spliced ​​with each other. The spliced ​​splicing base plates 3 are fixedly connected to the lower adjustment seat 4 by bolts, and the upper end of the upper fixing rod 14 is fixedly connected to the lower surface of the splicing base plate 3.

[0043] During operation, the spliced ​​bottom plate 3 of the present invention increases the stability and levelness of the bottom support of the right-angle connecting frame 6, reducing the possibility of large-scale settlement.

[0044] As a further solution of the present invention, a mounting platform 12 is fixedly mounted on the upper end of the upper mounting column 5 , and a monitoring component 13 is provided on the mounting platform 12 . The monitoring component 13 includes a radar monitoring device, a three-dimensional laser scanning device and an automated monitoring system.

[0045] During operation, the present invention collects information in the tunnel through radar monitoring equipment, three-dimensional laser scanning equipment and automated monitoring system, and the mounting platform 12 is placed on the right-angle connecting frame 6, thereby reducing the position change of the monitoring instrument and improving the comparability of the monitoring data.

[0046] As a further solution of the present invention, rotating motor 1 and rotating motor 2 are fixedly installed in the connecting seat 11, the output end of rotating motor 1 is fixedly connected to the side support shaft 15, and rotating motor 2 can drive the locking member 17 to rotate through the transmission gear.

[0047] During operation, the rotary motor 1 in the present invention can adjust the angle of the side support shaft 15. After the adjustment is completed, the rotary motor 2 drives the locking member 17 to rotate, and the thread on the locking member 17 is raised to lock the position of the side support shaft 15.

[0048] As a further solution of the present invention, a protective shell is provided on the outside of the monitoring component 13, a moisture-proof pad is provided on the outside of the heat dissipation port of the protective shell, the lower surface of the splicing base plate 3 is connected to the upper fixed rod 14 by bolts and multiple groups of lower fixed rods 14 are equidistantly arranged below it.

[0049] During operation, the present invention protects the monitoring component 13 through the protective shell, reducing the intrusion of external dust, moisture, etc. into the monitoring component 13, which may affect the accuracy of the equipment monitoring data and even damage the equipment.

[0050] As a further solution of the present invention, the lower adjustment seat 4 is spliced ​​together in two sections, the bottom of the lower section of the lower adjustment seat 4 is provided with a bolt hole, and the top is provided with a protruding thread. The bottom of the upper section of the lower adjustment seat 4 is provided with a thread groove and matches the protruding thread, and the top is fixedly connected to the upper mounting column 5.

[0051] During operation, the height of the right-angle connecting frame 6 can be adjusted by adjusting the thread between the upper and lower sections of the lower adjustment seat 4, ensuring that multiple groups of right-angle connecting frames 6 can be at the same height when installed on a non-level ground.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A support structure suitable for monitoring and dynamic adjustment of tunnel curved surfaces, comprising a support steel frame (1) and a right-angle connecting frame (6), characterized in that: The right-angle connecting frame (6) is provided with multiple groups and is arranged symmetrically on both sides. The supporting steel frame (1) is erected on the right-angle connecting frame (6) through an adjustment component. Multiple groups of supporting units are arranged between the supporting steel frames (1). Multiple groups of the right-angle connecting frames (6) are fixed inside the tunnel through positioning frames. Multiple groups of anti-settling parts are provided at the bottom of the positioning frame. The anti-settling parts include: A lower settlement column (7), wherein the lower end of the lower settlement column (7) is buried in the soil, a liquid cavity (702) and a storage cavity (703) are provided in the lower settlement column (7), a liquid guide component is provided between the storage cavity (703) and the liquid cavity (702), and the liquid in the storage cavity (703) can enter the liquid cavity (702) with reduced pressure under the action of the liquid guide component, and a plurality of locking blocks (701) are provided in the liquid cavity (702); An upper fixing rod (14), wherein the upper end of the upper fixing rod (14) is fixedly connected to the positioning frame, and the lower end is embedded in the liquid cavity (702), and the locking block (701) contacts the surface of the upper fixing rod (14) under the action of hydraulic pressure.

2. The support structure suitable for tunnel surface monitoring and dynamic adjustment according to claim 1, characterized in that: The upper fixed rod (14) is provided with a truncated cone-shaped lower inclined section (1401) and a cylindrical upper vertical section (1402); the upper vertical section (1402) is slidably connected to the upper end of the lower sedimentation column (7) and a sealing gasket is provided at the connection; a positioning base (704) is fixedly installed at the bottom of the liquid cavity (702); the locking block (701) is slidably connected to the positioning base (704), and the inner side of the locking block (701) can fit the surface of the lower inclined section (1401).

3. The support structure suitable for monitoring and dynamically adjusting tunnel surfaces according to claim 2, characterized in that: The liquid guide assembly includes a one-way valve (706), an embedded section (707) and a negative pressure valve (709), the upper end of the embedded section (707) is embedded in the upper fixed rod (14), and a contact plug (705) is fixedly installed at the lower end thereof, and the lower end of the contact plug (705) is fixedly connected to the middle position of the positioning base (704), a main output pipe (708) is opened between the storage cavity (703) and the positioning base (704), and a side overflow pipe is provided at the edge of the main output pipe (708) corresponding to the position of the adjacent gap of the locking block (701), the one-way valve (706) is fixedly installed in the side overflow pipe, and the one-way valve (706) can allow the liquid in the main output pipe (708) to overflow into the liquid cavity (702), and the negative pressure valve (709) is fixedly installed in the main output pipe (708).

4. The support structure suitable for monitoring and dynamically adjusting tunnel surfaces according to claim 3, characterized in that: The supporting steel frame (1) includes two groups of intermediate arch frames (101) and four groups of side support frames (102), the intermediate arch frames (101) are arched, and the two ends are respectively connected to the upper right-angle sides of the left and right groups of right-angle connecting frames (6), and the other right-angle sides of the right-angle connecting frames (6) are slidably connected to the side support frames (102), and the lower ends of the side support frames (102) are fixedly installed with positioning columns (2), and the lower ends of the positioning columns (2) are embedded below the ground. The adjustment component includes an adjustment motor (18), and the adjustment motor (18) is provided with two groups and is respectively installed at the two ends of the right-angle connecting frame (6), and the output ends of the adjustment motor (18) are fixedly installed with threaded rods, and the threaded rods are rotatably installed inside the right-angle sides of the right-angle connecting frame (6) and are threadedly connected to the intermediate arch frames (101) and the side support frames (102).

5. The support structure suitable for tunnel surface monitoring and dynamic adjustment according to claim 1, characterized in that: The support unit includes a rotating seat (8), which is installed on the supporting steel frame (1). A main support shaft (9) is rotatably installed between the symmetrically arranged rotating seats (8), and both ends of the main support shaft (9) are fixedly installed with a connecting seat (11). Multiple groups of side support shafts (15) are rotatably installed between two groups of the connecting seats (11). Multiple groups of support members (10) are fixedly installed on the side support shafts (15), and one end of the support member (10) away from the side support shaft (15) is set to be cylindrical. The support members (10) on adjacent side support shafts (15) are connected in pairs by a telescopic curved rod (16). Locking members (17) are fixedly installed in the connecting seat (11), and the locking members (17) can rotate and lock the side support shaft (15).

6. The support structure suitable for tunnel surface monitoring and dynamic adjustment according to claim 1, characterized in that: The positioning frame comprises an upper mounting column (5), a lower adjustment seat (4) and a splicing base plate (3); the upper end of the upper mounting column (5) is fixedly connected to the right-angle connecting frame (6), and the lower end thereof is fixedly connected to the lower adjustment seat (4); the splicing base plates (3) are provided in multiple groups and can be spliced ​​together; the spliced ​​splicing base plates (3) are fixedly connected to the lower adjustment seat (4) by bolts; and the upper end of the upper fixing rod (14) is fixedly connected to the lower surface of the splicing base plate (3).

7. The support structure suitable for monitoring and dynamically adjusting tunnel surfaces according to claim 6, characterized in that: A mounting platform (12) is fixedly mounted on the upper end of the upper mounting column (5), and a monitoring component (13) is provided on each of the mounting platforms (12). The monitoring component (13) includes a radar monitoring device, a three-dimensional laser scanning device, and an automated monitoring system.

8. The support structure suitable for monitoring and dynamically adjusting tunnel surfaces according to claim 5, characterized in that: A rotating motor 1 and a rotating motor 2 are fixedly installed in the connecting seat (11); the output end of the rotating motor 1 is fixedly connected to the side support shaft (15); and the rotating motor 2 can drive the locking member (17) to rotate via a transmission gear.

9. The support structure suitable for monitoring and dynamically adjusting tunnel surfaces according to claim 7, characterized in that: A protective shell is provided on the outside of the monitoring component (13), a moisture-proof cushion layer is provided on the outside of the heat dissipation port of the protective shell, the lower surface of the splicing base plate (3) is connected to the upper fixing rod (14) by bolts, and multiple groups of the lower fixing rods (14) are equidistantly provided below it.

10. The support structure suitable for tunnel surface monitoring and dynamic adjustment according to claim 6, characterized in that: The lower adjustment seat (4) is formed by splicing the upper and lower sections together. The bottom of the lower section of the lower adjustment seat (4) is provided with a bolt hole, and the top is provided with a protruding thread. The bottom of the upper section of the lower adjustment seat (4) is provided with a thread groove that matches the protruding thread, and the top is fixedly connected to the upper mounting column (5).

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