A buffer layer long tunnel surrounding rock deformation control device and a using method thereof

Abstract

The application discloses a kind of buffer layer long tunnel surrounding rock deformation control device and its using method, it mainly includes multiple lining arc plates, two two are attached, and form passageway inside, the outer surface of multiple lining arc plates is attached shock-absorbing plate, the inside of two two between the attachment of multiple lining arc plates is equipped with inner buckle strip seat, multiple inner buckle strip seat is equipped with multiple alternately arranged connecting support rod between two two. The application has the advantages that multiple lining arc plates are surrounded together, two two are equipped with inner buckle strip seat at the spliced part, so that multiple lining arc plates form a circle, buffer support assembly is installed on the outside of multiple lining arc plates, outer side support plate is installed on the outside, folding assembly is installed between two two of multiple outer side support plates, when used, multiple outer side support plates are attached to the rock wall of the tunnel, the opening size of folding assembly is adjusted, the opened tunnel can be closed, and sandstone is prevented from hitting the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction, in particular to a buffer layer long tunnel surrounding rock deformation control device and a using method thereof. BACKGROUND

[0002] With the rapid development of China's transportation industry, more and more long tunnels are built in areas with poor geological environment, high ground stress and soft surrounding rock. However, the construction of tunnels in such areas faces the problem of large deformation of surrounding rock, which brings great safety hazards to engineering construction.

[0003] For large deformation surrounding rock tunnels, the current common method is to improve the support stiffness to control the large deformation of the surrounding rock. For example, increasing the stiffness of the steel arch, increasing the thickness of the sprayed concrete, increasing the embedded length of the anchor rod, increasing the thickness and strength of the secondary lining, etc. to improve the resistance to large deformation of the surrounding rock. However, this method, due to the large deformation of the surrounding rock acting on the initial support during construction, the initial support is prone to large deformation. By increasing the stiffness and strength of the structure, not only the cost is increased, but also the excessive deformation of the surrounding rock still leads to problems such as deformation of the tunnel structure, intrusion, collapse, etc. During the later operation process, even the secondary lining may crack and other diseases, which is extremely difficult to treat. Based on the above problems, the present application provides a buffer layer long tunnel surrounding rock deformation control device and a using method thereof to solve the above problems. SUMMARY

[0004] (I) Technical problems to be solved

[0005] In view of the deficiencies of the prior art, the present application provides a buffer layer long tunnel surrounding rock deformation control device and a using method thereof to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0006] (II) Technical solutions

[0007] In order to solve the above-mentioned problems and achieve the desired purpose, the present application provides the following technical solutions: a buffer layer long tunnel surrounding rock deformation control device, comprising a plurality of inner lining arc plates, which are attached to each other and form a circular shape, and an internal passage is formed, the outer surfaces of the plurality of inner lining arc plates are attached with shock-absorbing plates, the inner sides of the attachment parts between the plurality of inner lining arc plates are each provided with an inner buckle strip seat, a plurality of alternately arranged connecting support rods are installed between the two inner buckle strip seats, a buffer support assembly is installed on the outside of each of the plurality of inner lining arc plates, and the buffer support assemblies are all directed to the center of the passage, an outer side support plate is installed on the pressure side of each of the plurality of buffer support assemblies, a folding assembly is installed between the two outer side support plates, the outer sides of the plurality of outer side support plates are attached to the rock wall, a plurality of evenly arrayed anchor rods are installed on the folding assembly, and the anchor rods are inserted into the rock wall, and a plurality of step plates are installed below the inside of the passage.

[0008] Preferably, the plurality of inner lining arc plates are all arc-shaped, and assembly grooves are formed on both sides of the inner arc surfaces of the plurality of inner lining arc plates. Assembly strips are formed on the outer sides of the plurality of inner buckle seat and are buckled with two adjacent assembly grooves, respectively.

[0009] Preferably, a plurality of arches are installed on the outer arc surfaces of the plurality of inner lining arc plates, and slots are formed in the plurality of arches. The plurality of buffer support assemblies are installed outside the plurality of arches, respectively.

[0010] Preferably, fixing seats are installed at both ends of the outer surfaces of the plurality of inner buckle seats. The two ends of the plurality of connecting support rods are installed together with the fixing seats of the two adjacent inner buckle seats by fasteners, respectively.

[0011] Preferably, long slots are formed in the middle positions of the outer surfaces of the plurality of inner buckle seats. Sliding through grooves are formed at both ends of the outer sides of the plurality of walkway plates. Insert rods are penetrated through the sliding through grooves, respectively. The plurality of insert rods are penetrated through the arbitrary long slots, respectively, and are fixed in position by locking caps.

[0012] Preferably, the plurality of buffer support assemblies are all rhombic in shape and are composed of a base, a top seat, two lower connecting rods, and two upper connecting rods. The two lower connecting rods are rotatably connected with the two upper connecting rods. The other ends of the two lower connecting rods and the two upper connecting rods are rotatably connected with the two ends of the outer sides of the base and the top seat, respectively. Threaded rods are installed on the bottom surfaces of the plurality of bases and are penetrated through the plurality of slots, respectively. Nuts are threadedly installed on the outer sides of the plurality of threaded rods. Buffer springs are installed on the top surfaces of the plurality of bases. The other ends of the buffer springs are installed with assembly seats. Buffer hydraulic cylinders are installed on the plurality of assembly seats. The plurality of buffer hydraulic cylinders are installed on the plurality of top seats, respectively. A plurality of uniformly arrayed mounting seats are installed on the inner arc surfaces of the plurality of outer side support plates and are installed together with the output ends of the plurality of buffer hydraulic cylinders, respectively.

[0013] Preferably, fixing ears are installed at the four corners of the inner arc surfaces of the plurality of outer side support plates. The two sides of the outer sides of the plurality of folding assemblies are installed together with two groups of adjacent fixing ears, respectively.

[0014] Preferably, the plurality of folding assemblies are composed of a middle plate, a left side plate, and a right side plate. The three plates are rotatably connected in sequence. The middle plate is in the middle, and the other two plates are on the two sides. Through holes are formed in the middle positions of the outer surfaces of the plurality of middle plates. The plurality of anchor rods are penetrated through the plurality of through holes, respectively.

[0015] A method for using a buffer layer long tunnel surrounding rock deformation control device,

[0016] The method comprises the following steps.

[0017] 1) Clean the rubble on the tunnel rock wall. According to the size of the required passage, determine the anchor point position, and drill the anchor hole.

[0018] 2) The folding assembly is pre-fixed by using the anchor rod, and a plurality of outer support plates are installed between every two of the plurality of folding assemblies;

[0019] 3) The positions of the folding assembly and the outer support plate are adjusted to ensure that the outer surface of the outer support plate is completely attached to the rock wall, and then the anchor rod is riveted;

[0020] 4) A plurality of buffer support assemblies are installed on the inner arc surface of the outer support plate, and the positions thereof are adjusted;

[0021] 5) Inner lining arc plates are installed on the other side of the buffer support assembly, the buffer support assembly is compressed or adjusted to ensure that the plurality of inner lining arc plates can form a circle and are tightly attached to each other;

[0022] 6) A plurality of inner buckle strip seats are installed at the attached positions between the plurality of inner lining arc plates;

[0023] 7) A plurality of connecting support rods are alternately installed between every two of the plurality of inner buckle strip seats;

[0024] 8) A plurality of walkway plates are installed in the channel, and the walkway plates are installed with the connecting support rods by using the insertion rod.

[0025] (Three) beneficial effects

[0026] Compared with the prior art, the present application provides a buffer layer long tunnel surrounding rock deformation control device and a use method thereof, which has the following beneficial effects:

[0027] 1. The buffer layer long tunnel surrounding rock deformation control device surrounds a plurality of inner lining arc plates, the spliced positions of the two are provided with inner buckle strip seats, the plurality of inner lining arc plates form a circle, buffer support assemblies are installed on the outer portions of the plurality of inner lining arc plates, outer support plates are installed on the outer sides of the buffer support assemblies, folding assemblies are installed between every two of the plurality of outer support plates, and the plurality of outer support plates are attached to the rock wall of the tunnel in use. The opening size of the folding assembly is adjusted to close the tunnel, thereby avoiding the impact of falling sand and stone on the device.

[0028] Among them, the buffer support assembly supports the tunnel, ensures that the outer support plate is always attached to the rock wall when the rock wall deforms, and the buffer support assembly as a whole is in the shape of a rhombus, and a buffer spring and a buffer hydraulic cylinder are installed at the middle line thereof.

[0029] Among them, a plurality of anchor rods are installed on the plurality of folding assemblies, and the anchor rods are inserted into the rock wall, which can be used to stabilize the overall firmness of the device.

[0030] 2. The buffer layer long tunnel surrounding rock deformation control device has connecting support rods installed between each pair of multiple inner buckle seats, which can fix multiple inner lining arc plates into shape and prevent the device from being deformed by pressure when the rock wall deforms. At the same time, walkway plates are installed below the circular space enclosed by multiple inner lining arc plates. When in use, inserting rods through the connecting support rods and walkway plates and tightening the locking caps can fix the walkway plates in the circular space, making it convenient for workers to walk on the walkway plates.

[0031] 3. The buffer layer long tunnel surrounding rock deformation control device has shock-absorbing plates attached to the outside of multiple inner lining arc plates, which can absorb the impact generated by falling gravel hitting the device and prevent damage to the device.

[0032] 4. The method of using the buffer layer long tunnel surrounding rock deformation control device is as follows: First, multiple folding components are pre-riveted to the rock wall using anchor rods. Then, multiple outer support plates are installed between multiple folding components, and the outer side of the outer support plate is made to fit against the rock wall. Then, the folding components are tensioned to ensure that each outer support plate can fit tightly against the rock wall to support the rock wall.

[0033] Next, multiple buffer support components are installed on the outer support plate, and inner lining arc plates are installed on the other side of the buffer support components. Then, the deformation of the buffer support components is adjusted to ensure that the multiple inner lining arc plates fit tightly together. Then, inner buckle seats are installed on the inner side between the multiple inner lining arc plates to ensure that the multiple inner lining arc plates fit firmly together.

[0034] Finally, multiple connecting support rods are alternately fixed between multiple inner buckle seats to ensure the firmness of the multiple inner lining arc plates. Then, walkway slabs are installed in the circular channel enclosed by the inner lining arc plates, and the position and height of the walkway slabs are adjusted as needed to form an access passage for workers. Attached Figure Description

[0035] Figure 1 This is a cross-sectional structural diagram showing the working state of the present invention;

[0036] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the overall structure of the inner lining arc plate, buffer support assembly and outer support plate in the assembled state of the present invention.

[0038] Figure 4 In this invention Figure 3 Another perspective illustration;

[0039] Figure 5 In this invention Figure 3 A schematic diagram of the cross-sectional structure;

[0040] Figure 6 Figure 1 is a schematic diagram of the overall structure of the plurality of inner buckle strip seats and connecting support rods in the assembled state in the present application;

[0041] Figure 7 Figure 2 is a schematic diagram of the partial structure of the walkway plate in the installed state in the present application;

[0042] Figure 8 Figure 3 is a schematic diagram of the overall structure of the buffer support assembly in the present application;

[0043] Figure 9 Figure 4 is a schematic diagram of the cross-sectional structure of the buffer support assembly in the present application;

[0044] Figure 10 Figure 5 is a schematic diagram of the overall structure of the folding assembly in the present application;

[0045] Figure 11 Figure 6 is a schematic diagram of the internal structure of the folding assembly in the present application;

[0046] Figure 12 Figure 7 is a schematic diagram of the first perspective view of the inner lining arc plate in the present application;

[0047] Figure 13 Figure 8 is a schematic diagram of the second perspective view of the inner lining arc plate in the present application;

[0048] Figure 14 Figure 9 is a schematic diagram of the overall structure of the outer side support plate in the present application.

[0049] In the figure: 1 - inner lining arc plate, 2 - inner buckle strip seat, 3 - buffer support assembly, 3a - base, 3b - top seat, 3c - lower connecting rod, 3d - upper connecting rod, 3e - threaded rod, 3f - nut, 3g - buffer spring, 3h - assembly seat, 3i - buffer hydraulic cylinder, 4 - outer side support plate, 5 - folding assembly, 5a - middle plate, 5b - left side plate, 5c - right side plate, 6 - anchor rod, 7 - shock-absorbing plate, 8 - connecting support rod, 9 - walkway plate, 10 - long notch, 11 - fixed seat, 12 - sliding through slot, 13 - insertion rod, 14 - locking cap, 15 - mounting seat, 16 - through hole, 17 - fixing lug, 18 - arch, 19 - notch, 20 - assembly groove. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0051] Please refer toFigures 1-14 A kind of buffer layer long tunnel surrounding rock deformation control device, including multiple inner lining arc plate 1, two two adhesion, and form channel, the outer surface of multiple inner lining arc plate 1 is attached with shock-absorbing plate 7, the inner side of two two adhesion of multiple inner lining arc plate 1 is equipped with inner buckle strip seat 2, multiple inner buckle strip seat 2 two two between them are equipped with multiple alternately arranged connecting support rod 8, the outside of multiple inner lining arc plate 1 is equipped with buffer support assembly 3, it is all towards the center of channel, the side of multiple buffer support assembly 3 under pressure is equipped with outer side support plate 4, multiple outer side support plate 4 two two between them are equipped with folding assembly 5, the outside of multiple outer side support plate 4 is attached with rock wall, multiple folding assembly 5 are all equipped with multiple uniform array anchor rod 6, it is inserted into rock wall, the inside of channel is equipped with multiple walkway plate 9 below.

[0052] As an optional technical solution of the application:

[0053] Multiple inner lining arc plate 1 are arc-shaped, the two sides of the inner arc surface are provided with assembly grooves 20, the two sides of the outer part of multiple inner buckle strip seats 2 are formed with assembly strips, which are respectively buckled with two adjacent assembly grooves 20, wherein the shape of the assembly groove 20 and the assembly strip can be processed according to actual conditions to facilitate the assembly of the two, and the inner buckle strip seat 2 is tightly attached with the inner lining arc plate 1, so that the multiple inner lining arc plate 1 are firmly assembled.

[0054] As an optional technical solution of the application:

[0055] The outer arc surface of the multiple inner lining arc plate 1 is equipped with multiple arches 18, which are provided with notches 19, and the multiple buffer support assemblies 3 are respectively installed outside the multiple arches 18. The existence of the arch 18 facilitates the installation of the buffer support assembly 3, and the installation position in the notch 19 can be adjusted according to the actual situation.

[0056] As an optional technical solution of the application:

[0057] The two ends of the outer surface of the multiple inner buckle strip seats 2 are equipped with fixing seats 11, and the two ends of the multiple connecting support rods 8 are installed together with the fixing seats 11 of the adjacent two inner buckle strip seats 2 through fasteners, and the multiple connecting support rods 8 are alternately arranged to avoid position interference between components.

[0058] As an optional technical solution of the application:

[0059] The middle of the outer surface of each inner buckle strip seat 2 is provided with a long slot 10, both ends of the outer surface of each step plate 9 are provided with a sliding groove 12, and a plug rod 13 penetrates through the inside of each sliding groove 12. Each plug rod 13 penetrates through any long slot 10 and is fixed in position by a locking cap 14. The step plate 9 with a suitable size is selected according to the actual situation. The step plate 9 and the connecting support rod 8 are assembled together by using the plug rod 13 and the locking cap 14, so that the step plate 9 can be conveniently installed and disassembled.

[0060] As an optional technical solution of the present application:

[0061] The plurality of buffer support assemblies 3 are all in the shape of a rhombus and are each composed of a base 3a, a top seat 3b, two lower connecting rods 3c and two upper connecting rods 3d. The two lower connecting rods 3c and the two upper connecting rods 3d are rotationally connected with each other, and the other ends of the two lower connecting rods 3c and the two upper connecting rods 3d are rotationally connected with the two ends of the base 3a and the top seat 3b, respectively. The bottom surface of each base 3a is provided with a threaded rod 3e which penetrates through a plurality of slots 19, and a nut 3f is threadedly installed on the outer surface of the threaded rod 3e. The top surface of each base 3a is provided with a buffer spring 3g, and the other end of the buffer spring 3g is provided with an assembly seat 3h. A buffer hydraulic cylinder 3i is installed on each assembly seat 3h, and the buffer hydraulic cylinder 3i is installed on the top seat 3b. The inner curved surface of each outer side support plate 4 is provided with a plurality of uniformly arrayed mounting seats 15 which are installed with the output ends of the buffer hydraulic cylinders 3i, respectively. The spring and the hydraulic cylinder can both play a certain supporting and buffering role, and the two components form a flexible assembly. When the rock wall deforms, the flexible assembly has a certain deformation space, so that the rigid support does not have a great impact on the rock wall. In addition, in order to facilitate use, an alarm and a sensor can be installed on the buffer support assembly 3, so that the staff can regularly maintain the assembly.

[0062] As an optional technical solution of the present application:

[0063] The four corners of the inner curved surface of each outer side support plate 4 are provided with a fixed lug 17, and the two sides of the outer surface of each folding assembly 5 are installed with two groups of adjacent fixed lugs 17.

[0064] As an optional technical solution of the present application:

[0065] Each folding assembly 5 is composed of a middle plate 5a, a left side plate 5b and a right side plate 5c. The three components are rotationally connected with each other in sequence, and the middle plate 5a is located in the middle, and the other two components are located on the two sides. The middle of the outer surface of each middle plate 5a is provided with a through hole 16, and each anchor rod 6 penetrates through the through hole 16. Due to the adjustability of the folding assembly 5, the number and the installation position of the outer side support plate 4 have diversity and wide applicability.

[0066] A method for using a buffer layer long and large tunnel surrounding rock deformation control device includes the following steps:

[0067] 1) Clear the debris on the tunnel wall, determine the anchor point position according to the size of the required passage, and drill anchor holes;

[0068] 2) Use anchor rod 6 to pre-fix the folding assembly 5, and then install multiple outer support plates 4 between every two folding assemblies 5;

[0069] 3) Adjust the position of the folding assembly 5 and the outer support plate 4, ensure that the outer surface of the outer support plate 4 is completely matched with the rock wall, and then rivet the anchor rod 6;

[0070] 4) Install multiple buffer support assemblies 3 to the inner arc surface of the outer support plate 4 and adjust their positions;

[0071] 5) Install the inner lining arc plate 1 on the other side of the buffer support assembly 3, compress or adjust the buffer support assembly 3, ensure that multiple inner lining arc plates 1 can form a circle and tightly fit between each other;

[0072] 6) Install multiple inner buckle strip seats 2 to the fit between the multiple inner lining arc plates 1;

[0073] 7) Install multiple connecting support rods 8 alternately between every two inner buckle strip seats 2;

[0074] 8) Install multiple walkway plates 9 into the passage and use the insertion rod 13 to install them with the connecting support rod 8.

[0075] The electrical components appearing in this article are all connected with the main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer that can be controlled.

[0076] In summary, the features, assembly method, use process and functions of each component in the tunnel surrounding rock deformation control device and its use method are as follows: a plurality of inner lining arc plates 1 are surrounded together, the joint of the two is provided with an inner buckle strip seat 2, so that the plurality of inner lining arc plates 1 form a circle, a buffer support assembly 3 is installed on the outside of the plurality of inner lining arc plates 1, an outer side support plate 4 is installed on the outside of the buffer support assembly 3, a folding assembly 5 is installed between every two outer side support plates 4, in use, the plurality of outer side support plates 4 are attached to the rock wall of the tunnel, the opening size of the folding assembly 5 is adjusted, the opened tunnel can be closed, the device is prevented from being hit by falling sand and stone, the buffer support assembly 3 supports the tunnel, when the rock wall deforms, the outer side support plate 4 can always be attached to the rock wall, the buffer support assembly 3 is in the shape of a rhombus, a buffer spring 3g and a buffer hydraulic cylinder 3i are installed at the middle line of the buffer support assembly 3, a plurality of anchor rods 6 are installed on the plurality of folding assemblies 5, the anchor rods 6 are inserted into the rock wall, which can be used to stabilize the overall firmness of the device, a connecting support rod 8 is installed between every two inner buckle strip seats 2, which can make the plurality of inner lining arc plates 1 be fixed and formed, when the rock wall deforms, the device is prevented from being deformed under pressure, a walkway plate 9 is installed below the circular space surrounded by the plurality of inner lining arc plates 1, in use, a plug rod 13 passes through the connecting support rod 8 and the walkway plate 9, and a locking cap 14 is screwed, the walkway plate 9 is fixed and installed in the circular space, which is convenient for the staff to walk on the walkway plate 9, a shock-absorbing plate 7 is attached to the outside of the plurality of inner lining arc plates 1, which can absorb the impact generated by the falling stone hitting the device, and the device is prevented from being damaged.

[0077] In use, first, the plurality of folding assemblies 5 are pre-riveted to the rock wall by the anchor rods 6, then the plurality of outer side support plates 4 are installed between the plurality of folding assemblies 5, and the outside of the outer side support plates 4 is attached to the rock wall, then the folding assembly 5 is tensioned to ensure that each outer side support plate 4 can be closely attached to the rock wall to support the rock wall.

[0078] Secondly, the plurality of buffer support assemblies 3 are installed on the outer side support plates 4, and the inner lining arc plates 1 are installed on the other side of the buffer support assemblies 3, then the deformation amount of the buffer support assemblies 3 is adjusted to ensure that the plurality of inner lining arc plates 1 are closely attached to each other, and the inner buckle strip seat 2 is installed on the inner side between the plurality of inner lining arc plates 1 to ensure that the plurality of inner lining arc plates 1 are firmly attached to each other.

[0079] Finally, the plurality of connecting support rods 8 are alternately fixed and installed between the plurality of inner buckle strip seats 2 to ensure the firmness of the plurality of inner lining arc plates 1, then the walkway plate 9 is installed in the circular channel surrounded by the inner lining arc plates 1, and the position and height of the walkway plate 9 are adjusted as needed to form the access channel for the staff.

[0080] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0081] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for controlling the deformation of surrounding rock in a long tunnel with a buffer layer, characterized in that: The system includes multiple inner lining arc plates (1), which are bonded together in pairs to form a circle, creating an internal channel. Each inner lining arc plate (1) has a shock-absorbing plate (7) attached to its outer surface. Inner fastening strip seats (2) are installed on the inner sides of the bonding areas between each pair of inner lining arc plates (1). Multiple alternately arranged connecting support rods (8) are installed between each pair of inner fastening strip seats (2). Buffer support assemblies (3) are installed on the outer sides of each inner lining arc plate (1), all facing the center of the channel. Outer support plates (4) are installed on the pressure-bearing sides of each of the buffer support assemblies (3). The outer support plates (4) are bonded together in pairs. Folding components (5) are installed between each of the multiple outer support plates (4), and the exterior of each of the multiple folding components (5) is in contact with the rock wall. Multiple anchor bolts (6) in a uniform array are installed on each of the multiple folding components (5), which are inserted into the rock wall. Multiple walkway plates (9) are installed below the interior of the passage. Fixed seats (11) are installed at both ends of the outer surface of each of the multiple inner buckle seats (2). The two ends of each of the multiple connecting support rods (8) are respectively installed together with the fixed seats (11) of two adjacent inner buckle seats (2) by fasteners. The entire buffer support components (3) are rhomboid in shape, and each consists of a base (3a), a top seat (3b), and two... It consists of a lower connecting rod (3c) and two upper connecting rods (3d). The two lower connecting rods (3c) and the two upper connecting rods (3d) are rotatably engaged. The other ends of the two rods are rotatably engaged with the two ends of the base (3a) and the top seat (3b), respectively. The bottom surface of each of the multiple bases (3a) is equipped with a threaded rod (3e), which passes through multiple slots (19) and is threaded with a nut (3f) on its exterior. The top surface of each of the multiple bases (3a) is equipped with a buffer spring (3g), and the other end of each buffer spring is equipped with an assembly seat (3h). Each of the multiple assembly seats (3h) is equipped with a buffer pressure cylinder (3i). Each of the buffer pressure cylinders (3i) is installed on a plurality of top seats (3b). A plurality of uniformly arrayed mounting seats (15) are installed on the inner arc surface of the plurality of outer support plates (4), which are respectively installed together with the output ends of the plurality of buffer pressure cylinders (3i). The plurality of folding components (5) are composed of a middle plate (5a), a left side plate (5b) and a right side plate (5c), which are rotated and fitted in sequence. The middle plate (5a) is in the center, and the other two are located on the sides. A through hole (16) is opened in the middle of the outer surface of the plurality of middle plates (5a), and the plurality of anchor rods (6) pass through the plurality of through holes (16).

2. The device for controlling the deformation of surrounding rock in a long tunnel with a buffer layer according to claim 1, characterized in that: The multiple inner lining arc plates (1) are all arc-shaped, and assembly grooves (20) are provided on both sides of their inner arc surfaces. The multiple inner buckle seats (2) have assembly strips protruding on both sides of their outer surfaces, which are respectively engaged with two adjacent assembly grooves (20).

3. The device for controlling the deformation of surrounding rock in a long tunnel with a buffer layer according to claim 1, characterized in that: Multiple arch frames (18) are installed on the outer arc surface of the multiple inner lining arc plates (1), and slots (19) are opened on them. Multiple buffer support components (3) are installed on the outside of the multiple arch frames (18).

4. The device for controlling the deformation of surrounding rock in a long tunnel with a buffer layer according to claim 1, characterized in that: Each of the inner buckle seat (2) has a long slot (10) at the center of its outer surface, and each of the multiple walkway slabs (9) has a sliding through slot (12) at both ends of its outer surface. Each of these slots has a rod (13) passing through it. Each of the multiple rods (13) passes through any long slot (10) and is fixed in place by a locking cap (14).

5. The device for controlling the deformation of surrounding rock in a long tunnel with a buffer layer according to claim 1, characterized in that: Fixing ears (17) are installed at the four corners of the inner arc surface of the multiple outer support plates (4), and the two sides of the exterior of the multiple folding components (5) are respectively installed together with two sets of adjacent fixing ears (17).

6. A method of using the buffer layer long tunnel surrounding rock deformation control device as described in any one of claims 1-5, characterized in that, It includes the following steps: 1) Clear the rubble from the tunnel walls, determine the anchor points according to the required tunnel size, and drill anchor holes; 2) Use anchor rods (6) to pre-fix the folding components (5), and then install multiple outer support plates (4) between each pair of multiple folding components (5); 3) Adjust the position of the folding assembly (5) and the outer support plate (4) to ensure that the outer surface of the outer support plate (4) is completely in contact with the rock wall, and then rivet the anchor rod (6). 4) Install multiple buffer support components (3) onto the inner arc surface of the outer support plate (4) and adjust their positions; 5) Install inner lining arc plate (1) on the other side of the buffer support assembly (3), compress or adjust the buffer support assembly (3) to ensure that multiple inner lining arc plates (1) can form a circle and fit tightly together; 6) Install multiple inner buckle seats (2) into the joint between multiple inner lining arc plates (1); 7) Install multiple connecting support rods (8) one by one alternately between multiple inner buckle seats (2); 8) Install multiple walkway slabs (9) into the passage and use insert rods (13) to attach them together with connecting support rods (8).

Images