Tunnel full mudstone section large deformation construction reinforcing device

Abstract

The utility model discloses a tunnel full mudstone section large-deformation construction reinforcing device, and particularly relates to the technical field of tunnel construction, the tunnel full mudstone section large-deformation construction reinforcing device comprises two vertical supporting pieces which are vertically symmetrical and a hoop top supporting piece which is horizontally arranged on the two vertical supporting pieces, and rubber connecting pieces are fixedly installed at the two ends, away from each other, of the hoop top supporting piece respectively. The middle section of the hoop top supporting piece is supported by the multiple top moving assemblies in an abutting mode. According to the tunnel full mudstone section large-deformation construction reinforcing device, the vertical supporting piece and the hoop top supporting piece are arranged to replace a traditional grouting supporting component, the hoop top supporting piece bears uneven downward pressing loads on the upper portion of a tunnel and is supported by the multiple jacking assemblies, and when the loads on the upper portion of the tunnel are pressed downwards, the hoop top supporting piece is supported by the jacking assemblies; when the hoop top supporting piece deforms irregularly, the top moving assembly on the lower portion deforms along with the hoop top supporting piece, compared with a traditional rigid grouting supporting component, the hoop top supporting piece is more plastic, and collapse caused by cracks of the tunnel supporting piece due to the large deformation geological characteristic can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a large deformation construction reinforcement device for a full mudstone section of a tunnel. Background Art

[0002] Large deformation of the full mudstone section of the tunnel is a challenging situation faced in tunnel construction. In the full mudstone section, due to the characteristics of mudstone itself, such as low strength, certain plasticity and expansion, and easy softening when exposed to water, it is easy to cause large deformation of the surrounding rock.

[0003] In order to solve the problem of large deformation of the entire mudstone section of the tunnel and ensure the safety and reliability of tunnel construction and operation, most of the existing reinforcement methods use grouting reinforcement to strengthen support. The large deformation geological characteristics of mudstone may cause the surrounding rock of the tunnel to continue to squeeze and converge into the tunnel. The grouting support components are integral structures that bear huge and uneven pressure and may crack and twist, or even collapse, seriously affecting construction safety and progress. In view of this, we propose a large deformation construction reinforcement device for the entire mudstone section of the tunnel to solve the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a large deformation construction reinforcement device for the entire mudstone section of a tunnel, which can effectively solve the above-mentioned problems.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A large deformation construction reinforcement device for a full mudstone section of a tunnel, comprising two vertically symmetrical vertical support members and a hoop top support member horizontally arranged on the two vertical support members, the upper parts of the vertical support members are each provided with a mounting groove, a hydraulic cylinder is fixedly installed in the mounting groove, the output shafts of the two hydraulic cylinders extend from the top ends of the vertical support members, and a transverse support member is fixedly installed on the output ends of the two hydraulic cylinders;

[0007] Two clamping and fixing assemblies are symmetrically installed on the two sides of the transverse support member away from the axis thereof, and a jacking assembly is equidistantly arranged on the transverse support member between the two clamping and fixing assemblies;

[0008] The two ends of the hoop top support member that are far away from each other are respectively fixedly installed with rubber connecting members, and the two rubber connecting members are respectively clamped and arranged on the two clamping and fixing components, and the middle section of the hoop top support member is respectively supported by a plurality of the jacking components.

[0009] Preferably, the clamping and fixing assembly comprises a fixing seat, which is symmetrically mounted on both sides of the top of the transverse support member, the top of the fixing seat is open, two clamping plates are symmetrically mounted in the fixing seat, and penetrating threaded holes are symmetrically opened at both ends of the fixing seat along the width direction;

[0010] A threaded handle is threadedly mounted on each of the threaded holes, and one end of each of the threaded handles extending through the threaded hole into the fixing seat is in contact with the clamping plate;

[0011] One end of the rubber connector extending into the fixing seat is clamped by the two clamping plates.

[0012] Preferably, a rotating hole matching the threaded handle is provided at one end of the splint close to the threaded handle, an annular limiting groove is provided in the rotating hole, and an annular limiting block matching the annular limiting groove is fixedly installed at one end of the threaded handle extending into the rotating hole.

[0013] Preferably, spikes are installed at equal distances on the opposite surfaces of the two clamps.

[0014] Preferably, the jacking assembly includes a connecting seat, which is equidistantly mounted on the middle section of the top end of the transverse support member, and the top end of the connecting seat is open;

[0015] A slider is slidably installed in the connecting seat, a top rod is fixedly installed on the top of the slider, and the top of the top rod is connected to the bottom end of the hoop top support member;

[0016] A recoil spring is placed in the connecting seat, and the head and tail ends of the recoil spring are respectively abutted between the sliding block and the inner bottom wall of the connecting seat.

[0017] Preferably, a limiting ring is fixedly installed at the upper port of the connecting seat, the inner wall diameter of the limiting ring is matched with the outer wall diameter of the push rod, and the outer wall diameter of the sliding block is larger than the inner wall diameter of the limiting ring.

[0018] Preferably, the bottom ends of the two vertical support members are fixedly mounted with feet, and the top ends of the feet are provided with penetrating connection holes away from the axis thereof.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. In the utility model, vertical supports and hoop top supports are provided to replace the traditional grouting support components, wherein the hoop top supports bear the uneven downward pressure load of the upper part of the tunnel and are supported by multiple jacking components. When the upper load of the tunnel is pressed downward, the hoop top supports deform irregularly, and the lower jacking components also deform accordingly. Compared with the traditional rigid grouting support components, it is more plastic and can prevent the tunnel support components from cracking and then collapsing due to large deformation geological characteristics.

[0021] 2. In the utility model, a clamping and fixing assembly is provided to clamp and fix the rubber connectors at both ends of the hoop top support member, thereby preventing the hoop top support member from deviating and displacing during the process of being subjected to force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the connection structure between the vertical support member and the hydraulic cylinder in the utility model;

[0024] Figure 3 It is a schematic diagram of the connection structure between the clamping and fixing assembly and the hoop top support member in the utility model;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of the jacking assembly in the utility model;

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the clamping and fixing assembly in the utility model;

[0027] Figure 6 For this utility model Figure 5 Enlarged schematic diagram of the node at A in the middle.

[0028] In the figure: 1. vertical support member; 11. mounting groove; 12. hydraulic cylinder; 13. foot; 131. connecting hole; 132. anchor rod; 2. transverse support member; 3. clamping and fixing assembly; 31. fixing seat; 33. clamping plate; 331. rotating hole; 332. annular limiting groove; 34. spike; 35. threaded handle; 351. annular limiting block; 36. threaded hole; 4. jacking assembly; 41. connecting seat; 42. slider; 43. jacking rod; 44. limiting ring; 45. return spring; 5. hoop top support member; 51. rubber connector. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] like Figure 1-Figure 5As shown, a large deformation construction reinforcement device for the whole mudstone section of a tunnel is provided, comprising two vertically symmetrical vertical support members 1 and hoop top support members 5 horizontally arranged on the two vertical support members 1, the upper part of each vertical support member 1 is provided with a mounting groove 11, a hydraulic cylinder 12 is fixedly installed in the mounting groove 11, the output shafts of the two hydraulic cylinders 12 extend from the top of the vertical support member 1, a transverse support member 2 is fixedly installed on the output end of the two hydraulic cylinders 12, two clamping and fixing assemblies 3 are symmetrically installed on the two sides of the transverse support member 2 away from the axis thereof, a jacking assembly 4 is equidistantly arranged on the transverse support member 2 between the two clamping and fixing assemblies 3, rubber connectors 51 are fixedly installed at the two ends of the hoop top support member 5 away from each other, the two rubber connectors 51 are clamped and arranged on the two clamping and fixing assemblies 3 respectively, and the middle section of the hoop top support member 5 is respectively supported and supported by a plurality of jacking assemblies 4;

[0031] By setting up vertical support members 1 and hoop top support members 5 to replace traditional grouting support components, two hydraulic cylinders 12 are used to push the transverse support members 2 upward, so that the hoop top support members 5 on the transverse support members 2 fit with the top of the tunnel. The hoop top support members 5 bear the uneven downward pressure load of the upper part of the tunnel and are supported by multiple jacking components 4. When the upper load of the tunnel is pressed downward, the hoop top support members 5 deform irregularly, and the lower jacking components 4 also deform accordingly. Compared with traditional rigid grouting support components, they are more plastic and can prevent cracks and collapse of tunnel support components due to large deformation geological characteristics.

[0032] It is worth mentioning that the hoop top support 5 is made of prestressed steel plate or prestressed compressed rubber plate, and has certain plasticity and deformability when bearing weight and pressure. The specific manufacturing process and specific use specifications of the hoop top support 5 here need to be determined based on the data of the construction site survey, and will not be elaborated in this article.

[0033] Furthermore, the clamping and fixing assembly 3 includes a fixing seat 31, which is symmetrically mounted on both sides of the top of the transverse support member 2, and the top of the fixing seat 31 is open. Two clamping plates 33 are symmetrically mounted in the fixing seat 31. Both ends of the fixing seat 31 along its width direction are symmetrically provided with penetrating 36, and threaded handles 35 are threadedly mounted on 36. One end of the threaded handle 35 extending into the fixing seat 31 through the threaded hole 36 is in contact with the clamping plate 33, and one end of the rubber connector 51 extending into the fixing seat 31 is clamped by the two clamping plates 33.

[0034] The two threaded handles 35 are respectively screwed to push the two clamping plates 33 through the threaded holes 36 , thereby firmly clamping and fixing the rubber connectors 51 on both sides of the hoop top support member 5 .

[0035] Furthermore, a rotating hole 331 matching with the threaded handle 35 is formed at one end of the clamping plate 33 close to the threaded handle 35, an annular limiting groove 332 is formed in the rotating hole 331, and an annular limiting block 351 matching with the annular limiting groove 332 is fixedly installed at one end of the threaded handle 35 extending into the rotating hole 331;

[0036] When the threaded handle 35 is turned, one end of the threaded handle 35 extending into the rotating hole 331 will push the two clamps 33 closer to each other, preventing the threaded handle 35 from being limited by the clamps 33 and unable to rotate when the threaded handle 35 is rotating to push the clamps 33. The annular limiting block 351 is set to limit the threaded handle 35 in the annular limiting groove 332 to prevent it from falling out of the rotating hole 331.

[0037] Furthermore, spikes 34 are installed at equal distances on the opposite surfaces of the two clamping plates 33;

[0038] The opposite surfaces of the two clamping plates 33 are equidistantly provided with spikes 34 , so that when the two clamping plates 33 clamp the rubber connector 51 , the spikes 34 are embedded in the rubber connector 51 , preventing the middle section of the hoop top support 5 from being subjected to force drop, and the rubber connectors 51 on both sides from being pulled out of the fixing seat 31 due to the pulling force.

[0039] Furthermore, the push-up assembly 4 includes a connecting seat 41, which is equidistantly installed at the middle section of the top of the transverse support member 2, and the top of the connecting seat 41 is open; a slider 42 is slidably installed in the connecting seat 41, and a push rod 43 is fixedly installed at the top of the slider 42, and the top of the push rod 43 is connected to the bottom end of the hoop support member 5; a return spring 45 is placed in the connecting seat 41, and the head and tail ends of the return spring 45 are respectively held between the slider 42 and the inner bottom wall of the connecting seat 41;

[0040] By setting the return spring 45, the return spring 45 pushes the push rod 43 due to the prestressed elastic force to push the hoop top support member 5, thereby strengthening the supporting force of the hoop top support member 5. At the same time, since the return spring 45 has elasticity, there is a certain downward space when it is pressed down by the hoop top support member 5, avoiding the phenomenon that the push assembly 4 is broken during the support process;

[0041] The above-mentioned return spring 45 is a prestressed spring, and the specific bearing capacity and resilience of the return spring 45 are adjusted accordingly according to the specific data in the construction survey.

[0042] Furthermore, a limit ring 44 is fixedly installed at the upper end of the connecting seat 41, the inner wall diameter of the limit ring 44 is adapted to the outer wall diameter of the push rod 43, and the outer wall diameter of the slider 42 is larger than the inner wall diameter of the limit ring 44;

[0043] By setting the outer wall diameter of the slider 42 to be larger than the inner wall diameter of the limiting ring 44 , the return spring 45 is prevented from pushing the limiting ring 44 out of the connecting seat 41 when pushing the limiting ring 44 .

[0044] Furthermore, the bottom ends of the two vertical support members 1 are fixedly mounted with a foot 13, and the top end of the foot 13 is provided with a penetrating connection hole 131 away from the axis thereof;

[0045] The anchor rod 132 is driven into the ground through the connection hole 131 on the foot 13 , so that the vertical support member 1 can be fixed on the ground, thereby preventing the vertical support member 1 from tilting and collapsing unnecessarily.

[0046] It should be noted that the specific installation method of the hydraulic cylinder 12, the connection method of the oil circuit and the control method used in the present invention are all conventional designs, and the present invention will not elaborate on them in detail.

[0047] The working principle of the utility model is as follows: two vertical support members 1 are driven into the ground through anchor rods 132 so that the two vertical support members 1 can be firmly supported upright on the ground, two rubber connectors 51 on the hoop top support member 5 are respectively inserted into the two fixing seats 31, two threaded handles 35 are respectively screwed so that the threaded handles 35 push the two clamping plates 33 to clamp and fix the rubber connectors 51, and the hydraulic cylinder 12 is started, and the hydraulic cylinder 12 pushes the hoop top support member 5 on the transverse support member 2 to fit with the top of the tunnel.

[0048] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A large deformation reinforcement device for tunnel full mudstone section, comprising two vertically symmetrical vertical support members (1) and a hoop top support member (5) horizontally arranged on the two vertical support members (1), characterized in that: The upper part of each vertical support member (1) is provided with a mounting groove (11), a hydraulic cylinder (12) is fixedly mounted in the mounting groove (11), the output shafts of the two hydraulic cylinders (12) extend from the top end of the vertical support member (1), and a transverse support member (2) is fixedly mounted on the output end of the two hydraulic cylinders (12); Two clamping and fixing assemblies (3) are symmetrically mounted on the two sides of the transverse support member (2) away from the axis thereof, and a pushing assembly (4) is equidistantly arranged on the transverse support member (2) between the two clamping and fixing assemblies (3); The two ends of the hoop top support member (5) which are far from each other are respectively fixedly mounted with rubber connecting members (51), and the two rubber connecting members (51) are respectively clamped and arranged on the two clamping and fixing assemblies (3), and the middle section of the hoop top support member (5) is respectively supported and abutted by the plurality of the jacking assemblies (4).

2. A large deformation reinforcement device for tunnel full mudstone section according to claim 1, characterized in that: The clamping and fixing assembly (3) comprises a fixing seat (31), the fixing seat (31) is symmetrically mounted on both sides of the top end of the transverse support member (2), the top end of the fixing seat (31) is open, two clamping plates (33) are symmetrically mounted inside the fixing seat (31), and penetrating threaded holes (36) are symmetrically opened at both ends of the fixing seat (31) along its width direction; A threaded handle (35) is threadedly mounted on each of the threaded holes (36), and one end of each of the threaded handles (35) extending through the threaded holes (36) into the fixing seat (31) is in contact with the clamping plate (33); One end of the rubber connecting piece (51) extending into the fixing seat (31) is clamped by the two clamping plates (33).

3. A large deformation reinforcement device for tunnel full mudstone section according to claim 2, characterized in that: The end of the clamping plate (33) close to the threaded handle (35) is provided with a rotating hole (331) adapted to the threaded handle (35), the rotating hole (331) is provided with an annular limiting groove (332), and the end of the threaded handle (35) extending into the rotating hole (331) is fixedly mounted with an annular limiting block (351) adapted to the annular limiting groove (332).

4. The large deformation reinforcement device for the whole mudstone section of a tunnel according to claim 2 is characterized in that: The opposite surfaces of the two clamping plates (33) are equidistantly provided with spikes (34).

5. The large deformation reinforcement device for the whole mudstone section of a tunnel according to claim 1 is characterized in that: The jacking assembly (4) comprises a connecting seat (41), the connecting seat (41) is equidistantly mounted on the middle section of the top end of the transverse support member (2), and the top end of the connecting seat (41) is open; A slider (42) is slidably mounted in the connecting seat (41), a top rod (43) is fixedly mounted on the top of the slider (42), and the top of the top rod (43) is connected to the bottom end of the hoop top support member (5); A recoil spring (45) is placed in the connection seat (41), and the head and tail ends of the recoil spring (45) are respectively abutted between the slider (42) and the inner bottom wall of the connection seat (41).

6. The large deformation reinforcement device for the whole mudstone section of a tunnel according to claim 5 is characterized in that: A limiting ring (44) is fixedly mounted at the upper end of the connecting seat (41); the inner diameter of the limiting ring (44) is matched to the outer diameter of the push rod (43); and the outer diameter of the sliding block (42) is larger than the inner diameter of the limiting ring (44).

7. The large deformation reinforcement device for tunnel full mudstone section according to claim 1 is characterized by: The bottom ends of the two vertical support members (1) are fixedly mounted with base feet (13), and the top ends of the base feet (13) are provided with penetrating connection holes (131) away from the axis thereof.

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