Large-deformation supporting structure for soft rock hydraulic tunnel

Abstract

The utility model discloses a soft rock hydraulic tunnel large deformation supporting structure, and particularly relates to the technical field of soft rock supporting, the soft rock hydraulic tunnel large deformation supporting structure comprises a soft rock base layer, a concrete layer is arranged on the inner wall of the soft rock base layer, a plurality of indirectly distributed supporting frames are arranged on the inner wall of the concrete layer, and each supporting frame comprises two lifting sleeves. And threaded rods are movably mounted on one sides of the interiors of the two lifting sleeves. According to the large-deformation supporting structure for the soft rock hydraulic tunnel, in actual work, the threaded rod is rotated to enable the two moving blocks to move in the opposite directions, the two driving rods can push the lifting rods to ascend and descend, when the two lifting rods ascend and descend at the same time, the height of the supporting frame can be adjusted, the lifting rods are inserted into the mounting sleeves, and then the supporting frame is fixed. And bolts are inserted into the overlapped connecting holes and mounting holes, so that the connection of the supporting frame and the two lifting rods can be completed, supporting frames of different sizes can be replaced according to actual requirements, and adjustment can be conveniently carried out according to the actual size of the soft rock hydraulic tunnel.

Description

Technical Field

[0001] The utility model embodiment relates to the technical field of soft rock support, and in particular to a large deformation support structure for a soft rock hydraulic tunnel. Background Art

[0002] Soft rock hydraulic tunnel refers to cave projects such as water conservancy, transportation, and mining with complex geological conditions and soft and easily deformed surrounding rocks. During the construction of soft rock hydraulic tunnels, large deformation support structures are required to support them.

[0003] After searching, for example, the utility model with application number 201620809658.1 discloses a three-dimensional spatial support structure for a large-diameter soft rock tunnel, including a vertical support frame adapted to the shape of the tunnel wall and a curved support frame adapted to the shape of the tunnel top, the vertical support frame and the curved support frame are both double-layer lattice shell support structures, and anchor rods are arranged on the curved support frame. However, the utility model is not convenient for adjustment according to the actual size of the soft rock hydraulic tunnel. Therefore, in order to solve the above defects, the inventor proposes a large deformation support structure for a soft rock hydraulic tunnel. Utility Model Content

[0004] Therefore, the main purpose of the utility model is to provide a large deformation support structure for a soft rock hydraulic tunnel, which can effectively solve the problem in the prior art that it is inconvenient to adjust according to the actual size of the soft rock hydraulic tunnel.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0006] A large deformation support structure for a soft rock hydraulic tunnel, comprising a soft rock base, the inner wall of which is provided with a concrete layer, and the inner wall of the concrete layer is provided with a plurality of indirectly distributed support frames;

[0007] The support frame includes two lifting sleeves, one side of the interior of the two lifting sleeves is movably installed with a threaded rod, and the other side of the interior of the two lifting sleeves is fixedly installed with a sliding rod, the outer surfaces of the two threaded rods are threadedly connected to two moving blocks, and the four moving blocks are movably connected to the two sliding rods respectively, the top surfaces of the four moving blocks are movably installed with driving rods, and the sides of the four driving rods away from the moving blocks are respectively movably connected to two lifting rods, and the top surfaces of the two lifting rods are commonly fixedly installed with a support frame;

[0008] Two mounting sleeves are fixedly mounted on the bottom surface of the support frame, and two connection holes are provided on both sides of the outer surfaces of the two mounting sleeves, and two mounting holes are provided on one side of the two lifting rods extending to the outside of the lifting sleeves.

[0009] Preferably, a support sleeve is fixedly installed on one side of the outer surface of the two lifting sleeves, the inside of the two support sleeves are movably connected with support rods, and the two support rods are fixedly connected to the support frame, the outer surface of the two support rods is provided with a plurality of adjustment holes, and one side of the outer surface of the two support sleeves is provided with fastening holes.

[0010] Preferably, the size of the fastening hole is the same as the size of the adjustment hole.

[0011] Preferably, the outer surface of the threaded rod is provided with two opposite threads.

[0012] Preferably, a supporting plate is fixedly installed on the top surface of the supporting frame, a placement cavity is provided inside the supporting plate, and an absorbent sponge is provided inside the placement cavity, a sealing plate is movably installed on one side of the placement cavity, a plurality of guide grooves are provided on the outer surface of the supporting plate, and a plurality of guide holes are provided inside the guide grooves.

[0013] Preferably, a number of evenly distributed anchor rods are provided inside the soft rock base layer, a precast concrete slab is provided on the inner wall of the concrete layer and between adjacent support frames, a filling layer is provided between the precast concrete slab and the support frame, a plurality of anchor rods are provided on one side of the precast concrete slab, and the anchor rods are fixedly connected to the concrete layer.

[0014] The utility model embodiment has the following advantages:

[0015] The utility model discloses a large deformation support structure for a soft rock hydraulic tunnel. A support frame is provided. In actual work, a threaded rod is rotated to make two moving blocks move in opposite directions, and two driving rods can push a lifting rod to lift. When the two lifting rods are lifted at the same time, the height of the support frame can be adjusted. The lifting rod is inserted into a mounting sleeve, and a bolt is inserted into a connection hole and a mounting hole that are overlapped, so that the support frame and the two lifting rods can be connected. Support frames of different sizes can be replaced according to actual needs, thereby facilitating adjustment according to the actual size of the soft rock hydraulic tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. disclosed in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of the utility model. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0018] Figure 1 It is the overall structure diagram of the utility model;

[0019] Figure 2 This is a schematic cross-sectional structural diagram of the lifting sleeve of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation sleeve structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the support frame structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the concrete layer of the utility model.

[0023] In the figure: 1, soft rock base; 2, anchor rod; 3, concrete layer; 4, support frame; 5, concrete precast board; 6, filling layer; 7, anchor rod; 401, lifting sleeve; 402, support frame; 403, threaded rod; 404, sliding rod; 405, moving block; 406, driving rod; 407, supporting sleeve; 408, supporting rod; 409, lifting rod; 4071, fastening hole; 4072, adjusting hole; 4091, mounting hole; 4021, mounting sleeve; 4022, connecting hole; 4023, supporting plate; 4024, sealing plate; 4025, absorption sponge; 4026, placement cavity; 4027, guide groove; 4028, guide hole. DETAILED DESCRIPTION

[0024] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part 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 creative work are within the scope of protection of the present invention.

[0025] The utility model discloses a large deformation support structure for a soft rock hydraulic tunnel, such as Figure 1-5As shown, it includes a soft rock base 1, the inner wall of the soft rock base 1 is provided with a concrete layer 3, the concrete layer 3 is located on the inner wall of the soft rock base 1, fixed on the rock, and provides a supporting effect. By fixing the concrete layer 3, the load from the rock pressure and water pressure can be dispersed and borne, the overall rigidity of the support structure is increased, the soft rock base 1 is protected from damage, uniform supporting force is provided, and the deformation and damage of the rock mass are reduced. The inner wall of the concrete layer 3 is provided with a plurality of indirectly distributed support frames 4.

[0026] The support frame 4 includes two lifting sleeves 401, and a threaded rod 403 is movably installed on one side of the interior of the two lifting sleeves 401, and a sliding rod 404 is fixedly installed on the other side of the interior of the two lifting sleeves 401. The outer surfaces of the two threaded rods 403 are threadedly connected to two moving blocks 405, and the four moving blocks 405 are movably connected to the two sliding rods 404 respectively. The top surfaces of the four moving blocks 405 are movably installed with driving rods 406, and the sides of the four driving rods 406 away from the moving blocks 405 are movably connected to two lifting rods 409 respectively. The outer surface of 403 is provided with two opposite threads. When the threaded rod 403 rotates, the two moving blocks 405 can move in opposite directions. When the two moving blocks 405 approach each other, the two driving rods 406 can push the lifting rod 409 to rise. On the contrary, when the two moving blocks 405 move away from each other, the two driving rods 406 can make the lifting rod 409 descend. The top surfaces of the two lifting rods 409 are fixedly installed with a support frame 402. When the two lifting rods 409 are raised or lowered, they can drive the support frame 402 to rise or fall.

[0027] Two mounting sleeves 4021 are fixedly installed on the bottom surface of the support frame 402, and two connecting holes 4022 are provided on both sides of the outer surfaces of the two mounting sleeves 4021. Two lifting rods 409 extend to one side of the outside of the lifting sleeve 401 and have two mounting holes 4091. When the mounting sleeves 4021 are put on the lifting rods 409, the mounting holes 4091 will coincide with the connecting holes 4022. Then, the bolts can be inserted to make the support frame 402 and the two lifting rods 409 be raised and lowered, so as to replace the support frames 402 of different sizes.

[0028] A support sleeve 407 is fixedly installed on one side of the outer surface of the two lifting sleeves 401, and the interior of the two support sleeves 407 is movably connected with a support rod 408, and the two support rods 408 are fixedly connected to the support frame 402. When the support frame 402 is raised or lowered, the two support rods 408 can be driven to extend and retract.

[0029] The outer surfaces of the two support rods 408 are each provided with a plurality of adjustment holes 4072, and the outer surfaces of the two support sleeves 407 are each provided with a fastening hole 4071 on one side. When the height of the support frame 402 is adjusted, bolts can be inserted into the overlapping fastening holes 4071 and the adjustment holes 4072 to support the support frame 402 after the height is adjusted.

[0030] A supporting plate 4023 is fixedly installed on the top surface of the support frame 402, a placement cavity 4026 is provided inside the supporting plate 4023, and an absorbent sponge 4025 is provided inside the placement cavity 4026. A sealing plate 4024 is movably installed on one side of the placement cavity 4026. A plurality of guide grooves 4027 are provided on the outer surface of the supporting plate 4023, and a plurality of guide holes 4028 are provided inside the guide grooves 4027. During the support process, water on the top surface of the tunnel will enter the placement cavity 4026 through the guide grooves 4027 and the guide holes 4028, and the absorbent sponge 4025 can absorb it.

[0031] A number of evenly distributed anchor rods 2 are provided inside the soft rock base 1, and a precast concrete panel 5 is provided on the inner wall of the concrete layer 3 and between adjacent support frames 4. A plurality of anchor rods 7 are provided on one side of the precast concrete panel 5, and the anchor rods 7 are fixedly connected to the concrete layer 3. The precast concrete panel 5 is located between the support frames 4, thereby increasing the overall stiffness and stability of the support structure. The precast concrete panel 5 is fixed to the concrete layer 3 through the anchor rods 7, and can withstand horizontal and vertical forces, thereby improving the stiffness and stability of the support structure and enhancing the bearing capacity and deformation capacity of the structure.

[0032] A filling layer 6 is provided between the precast concrete panel 5 and the support frame 4 . The filling layer 6 is a rubber buffer layer. The rubber buffer layer is fixed to a side of the support frame 4 and the other side of the rubber buffer layer is in contact with the precast concrete panel 5 .

[0033] The working principle of the utility model is as follows: the threaded rod 403 is rotated to make the two moving blocks 405 move in opposite directions, and the two driving rods 406 can push the lifting rod 409 to lift and lower. When the two lifting rods 409 are lifted and lowered at the same time, the height of the support frame 402 can be adjusted. The lifting rod 409 is inserted into the mounting sleeve 4021, and the bolt is inserted into the overlapping connection hole 4022 and the mounting hole 4091, so as to complete the connection between the support frame 402 and the two lifting rods 409, so as to replace the support frame 402 of different sizes according to actual needs.

[0034] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A large deformation support structure for a soft rock hydraulic tunnel, comprising a soft rock base (1), characterized in that: The inner wall of the soft rock base layer (1) is provided with a concrete layer (3), and the inner wall of the concrete layer (3) is provided with a plurality of indirectly distributed support frames (4); The support frame (4) comprises two lifting sleeves (401), a threaded rod (403) is movably installed on one side of the interior of the two lifting sleeves (401), and a sliding rod (404) is fixedly installed on the other side of the interior of the two lifting sleeves (401), the outer surfaces of the two threaded rods (403) are threadedly connected to two moving blocks (405), and the four moving blocks (405) are respectively movably connected to the two sliding rods (404), the top surfaces of the four moving blocks (405) are movably installed with driving rods (406), and the sides of the four driving rods (406) away from the moving blocks (405) are respectively movably connected to two lifting rods (409), and the top surfaces of the two lifting rods (409) are commonly fixedly installed with a support frame (402); Two mounting sleeves (4021) are fixedly mounted on the bottom surface of the support frame (402), and two connection holes (4022) are provided on both sides of the outer surfaces of the two mounting sleeves (4021), and two mounting holes (4091) are provided on one side of the two lifting rods (409) extending to the outside of the lifting sleeves (401).

2. A large deformation support structure for a soft rock hydraulic tunnel according to claim 1, characterized in that: A support sleeve (407) is fixedly installed on one side of the outer surface of the two lifting sleeves (401), and a support rod (408) is movably connected inside the two support sleeves (407), and the two support rods (408) are fixedly connected to the support frame (402), and a plurality of adjustment holes (4072) are opened on the outer surface of the two support rods (408), and a fastening hole (4071) is opened on one side of the outer surface of the two support sleeves (407).

3. A large deformation support structure for a soft rock hydraulic tunnel according to claim 2, characterized in that: The size of the fastening hole (4071) is the same as the size of the adjustment hole (4072).

4. A large deformation support structure for a soft rock hydraulic tunnel according to claim 1, characterized in that: The outer surface of the threaded rod (403) is provided with two opposite threads.

5. The large deformation support structure for a soft rock hydraulic tunnel according to claim 1, characterized in that: A support plate (4023) is fixedly installed on the top surface of the support frame (402), a placement cavity (4026) is provided inside the support plate (4023), and an absorbent sponge (4025) is provided inside the placement cavity (4026), a sealing plate (4024) is movably installed on one side of the placement cavity (4026), a plurality of guide grooves (4027) are provided on the outer surface of the support plate (4023), and a plurality of guide holes (4028) are provided inside the guide grooves (4027).

6. The large deformation support structure for a soft rock hydraulic tunnel according to claim 1, characterized in that: A plurality of evenly distributed anchor rods (2) are arranged inside the soft rock base layer (1); a precast concrete panel (5) is arranged on the inner wall of the concrete layer (3) and between adjacent support frames (4); a filling layer (6) is arranged between the precast concrete panel (5) and the support frame (4); a plurality of anchor rods (7) are arranged on one side of the precast concrete panel (5), and the anchor rods (7) are fixedly connected to the concrete layer (3).

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