Supporting device for tunnel surrounding rock
By using a support device consisting of high-strength and high-toughness corrugated plates, elastic supports, and UHPC concrete filling layers, combined with a water circulation unit, the support problem of the tunnel under high ground stress, large deformation, and high ground temperature conditions was solved, achieving the stability of the tunnel structure and the safety of workers, and realizing the recycling of geothermal resources.
Patent Information
- Application Number
- CN202520285768.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing tunnel support structures, under the combined effects of high ground stress and large deformation with high ground temperature and terrain, have insufficient safety reserves and poor support effects, affecting the health, safety and stability of the tunnel throughout its entire life cycle.
A support device consisting of high-strength and high-toughness corrugated plates, elastic supports, anchor bolts, and bolts, combined with a UHPC concrete filling layer and a water circulation unit, is used to achieve coordinated deformation and heat management of the tunnel surrounding rock.
It effectively reduces the stress and pressure of the surrounding rock of the tunnel, prevents excessive displacement and instability, lowers the internal temperature, ensures the stability of the tunnel structure and the safety of workers, and realizes the recycling of geothermal resources.
Smart Images
Figure CN223647817U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel support technology, specifically to a support device for tunnel surrounding rock and a circulating cooling device. Background Technology
[0002] To further promote the development of western regions, the construction of railways, highways, water conservancy and other projects is essential. Given the special geological environment of western regions, a large number of tunnels and underground projects have been built, such as railway tunnels, highway tunnels and water conveyance tunnels, which are developing into deeper parts of the country. The deep and complex geological environment brings more complex and variable engineering environment to tunnels and underground projects, such as high ground stress and large deformation, high ground temperature, and crossing active fault zones. Various geological disasters directly affect the health and safety of construction workers and the quality and safety of project construction.
[0003] Existing support structures offer a certain safety margin for dealing with single geological hazards. However, there is no good solution for extreme situations where two or more geological hazards overlap. For example, when faced with the coupled superposition of high ground stress and large deformation with high ground temperature and terrain, existing tunnel support structures still suffer from insufficient safety margin, poor support effect, and problems affecting the health, safety, and stability of the tunnel throughout its entire life cycle.
[0004] Therefore, it is desirable in the art to provide a support device for tunnel surrounding rock to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this utility model is to propose a support device for tunnel surrounding rock, which can coordinate deformation with the tunnel surrounding rock within a certain range after the support is completed to release part of the pressure of the tunnel surrounding rock, thereby reducing the stress and pressure of the tunnel surrounding rock. At the same time, the corrugated plate structure has strong support resistance, thereby preventing excessive displacement or even instability and failure of the tunnel surrounding rock.
[0006] According to a first aspect of the present invention, a support device for tunnel surrounding rock is provided, comprising a corrugated plate disposed below the tunnel surrounding rock.
[0007] The fastener includes an elastic bracket that abuts against the lower end face of the corrugated plate, an anchor rod that extends longitudinally through the surrounding rock of the tunnel and the corrugated plate and is adapted to the elastic bracket, and a bolt that is sleeved on the anchor rod and used to pre-tighten the elastic bracket.
[0008] In one embodiment, the corrugated plate has a sinusoidal cross-section.
[0009] In one embodiment, the corrugated plate includes a first crest in an odd-numbered column and a second crest in an even-numbered column for accommodating pipes, wherein the resilient support is disposed within the first crest.
[0010] In one embodiment, the length of the anchor bolt is not less than 3m.
[0011] In one embodiment, a filling layer is provided between the corrugated plate, the surrounding rock of the tunnel, and the pipeline, and the thickness of the filling layer is not less than the crest height of the corrugated plate.
[0012] In one embodiment, the filling layer is made of UHPC concrete and water, and the filling layer is filled by grouting.
[0013] In one embodiment, the corrugated plate is made of metal and the pipe is made of fiber.
[0014] According to a second aspect of the present invention, a circulating cooling device is provided, comprising a water circulation unit and a support device adapted to the water circulation unit according to the above description, wherein the water circulation unit includes a circulation manifold laid on the second crest of the corrugated plate and a water supply mechanism connected to the circulation manifold.
[0015] In one embodiment, the circulation manifold is configured in an S-shape and consists of a plurality of pipes connected end to end.
[0016] In one embodiment, a heat dissipation mechanism for providing heat energy is provided at the end of the circulation manifold.
[0017] Compared with the prior art, the advantages of this utility model are:
[0018] Firstly, the corrugated plate in this utility model is preferably a high-strength, high-toughness corrugated plate, which has good flexible deformation capability. The cross-sectional structure of the corrugated plate is sinusoidal, therefore, it can apply active support force to achieve active control of prestress over a large range of tunnel surrounding rock.
[0019] Furthermore, the corrugated plate, through its adaptation with fasteners, enables the elastic support to apply sufficient preload to the corrugated plate, further ensuring its support resistance to the tunnel surrounding rock. Therefore, after support is completed, it can deform in coordination with the tunnel surrounding rock within a certain range to release some of the pressure on the surrounding rock, thereby reducing the stress and pressure on the tunnel surrounding rock. Simultaneously, the corrugated plate's structure possesses strong support resistance, thus preventing excessive displacement or even instability and failure of the tunnel surrounding rock.
[0020] Secondly, this utility model has a filling layer between the corrugated plate, the surrounding rock of the tunnel and the pipeline. With its excellent mechanical properties, it can further absorb the energy released by the deformation of the surrounding rock of the tunnel, and thus effectively cope with situations such as high ground stress, large deformation and active fault displacement, so as to further ensure the normal stability of the internal tunnel structure.
[0021] In addition, by using UHPC concrete as an insulation layer between the tunnel surrounding rock and the corrugated plate, the heat conduction capacity of geothermal environments such as high ground temperature can be effectively reduced, thereby further ensuring the safety of the corrugated plate and the water circulation unit.
[0022] Thirdly, the water circulation unit in this utility model can be used for heat absorption and secondary development and utilization of geothermal resources in high-temperature tunnel environments. It not only reduces the internal temperature during tunnel construction and operation, thereby ensuring the health and safety of workers and the safety and stability of tunnel support structures, but also realizes the recycling of geothermal resources. Attached Figure Description
[0023] The present invention will now be described in detail with reference to the accompanying drawings, in which:
[0024] Figure 1 The schematic diagram shows the structure of a support device for tunnel surrounding rock according to the present invention;
[0025] Figure 2 This is a schematic diagram of the water circulation unit in the circulating cooling device according to the present invention.
[0026] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation
[0027] To make the technical solution and advantages of this utility model clearer, the exemplary embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0028] The present invention will be further described below with reference to the accompanying drawings.
[0029] Figure 1 The schematic diagram shows the structure of the support device 100 for tunnel surrounding rock according to the present invention;
[0030] like Figure 1 As shown, according to a first aspect of the present invention, a support device 100 for tunnel surrounding rock is provided, which includes a corrugated plate 20 disposed below the tunnel surrounding rock 10.
[0031] In this invention, the corrugated plate 20 is preferably a high-strength, high-toughness corrugated plate, which has good flexible deformation capability. Therefore, after the support is completed, it can deform in coordination with the tunnel surrounding rock 10 within a certain range to release some of the pressure on the tunnel surrounding rock 10, thereby reducing the stress and pressure on the tunnel surrounding rock 10. At the same time, the structure of the corrugated plate 20 has strong support resistance, thereby preventing the tunnel surrounding rock 10 from undergoing excessive displacement or even instability and failure.
[0032] In one embodiment of this utility model, the corrugated plate 20 has a sinusoidal cross-sectional structure. Therefore, the corrugated plate 20 can apply active support force, thereby achieving active control of the prestress over a large range of the tunnel surrounding rock 10.
[0033] In one embodiment, such as Figure 1 As shown, the support device 100 for tunnel surrounding rock also includes fasteners. The fasteners include an elastic bracket 31 that abuts against the lower end face of the corrugated plate 20, an anchor rod 32 that extends longitudinally through the tunnel surrounding rock 10 and the corrugated plate 20 and is adapted to the elastic bracket 31, and a bolt 33 that is sleeved on the anchor rod 32.
[0034] In this utility model, the elastic support 31 can be compressed by turning the bolt 33, thereby causing the elastic support 31 to apply sufficient preload to the corrugated plate 20, so as to further ensure the support resistance of the corrugated plate 20 to the surrounding rock of the tunnel 10.
[0035] In one embodiment, such as Figure 1 As shown, the corrugated plate 20 includes a first crest 21 in an odd-numbered column and a second crest 22 in an even-numbered column. Preferably, the elastic support 31 is disposed within the first crest 21, thereby improving the support resistance of the corrugated plate 20 to the tunnel surrounding rock 10, which helps to release some of the pressure on the tunnel surrounding rock 10; the pipeline 202 is installed within the second crest 22, thereby making it easier to absorb geothermal resources and thus achieve effective utilization, the details of which are described below.
[0036] In one embodiment, the upper end face of the elastic support 31 is configured as an arc surface. Preferably, the elastic support 31 can fit tightly against the first crest 21, thereby helping the anchor 32 to apply preload to shorten the distance between the corrugated plate 20 and the tunnel surrounding rock 10, and thus more easily release some of the pressure on the tunnel surrounding rock 10 to improve the structural stability of the tunnel surrounding rock 10.
[0037] In one embodiment, the length of the anchor bolt 32 is not less than 3m. Therefore, through the cooperation of the anchor bolt 32, bolt 33, and elastic support 31, the stability between the corrugated plate 20 and the surrounding rock of the tunnel 10 can be effectively ensured. In addition, the prestress applied by the anchor bolt 32 radiates onto the corrugated plate 20, thereby enabling the corrugated plate 20 to provide prestressed support to the surrounding rock of the tunnel 10 over a large area.
[0038] In this invention, different models of corrugated plates 20 need to be selected and used for support and reinforcement work based on different surrounding rock grades and geological environments. This includes considerations such as the parameters, corrugation shape, and thickness of the corrugated plates 20. Furthermore, according to the support strength requirements, the length of the anchor bolts 32 is typically not less than 3 meters.
[0039] In one embodiment of this invention, a filling layer 40 is provided between the corrugated plate 20, the surrounding rock of the tunnel 10, and the pipeline 202. In this invention, the filling layer 40 is an ultra-high performance concrete (UHPC) filling layer. Preferably, the filling layer 40 is made of UHPC concrete and water.
[0040] In this invention, the filling layer 40, with its excellent mechanical properties, can further absorb the energy released by the deformation of the surrounding rock 10 of the tunnel, thereby effectively coping with situations such as high ground stress, large deformation, and active fault displacement, so as to further ensure the normal stability of the internal tunnel structure.
[0041] In addition, by using UHPC concrete as an insulation layer between the tunnel surrounding rock 10 and the corrugated plate 20, the heat conduction capacity of geothermal environments such as high ground temperature can be effectively reduced, thereby further ensuring the safety of the corrugated plate 20 and the water circulation unit 200 (described below).
[0042] In this invention, the filling layer 40 is directly filled by grouting to fill the gaps between the corrugated plate 20, the tunnel surrounding rock 10, and the pipeline 202. Preferably, the thickness of the filling layer 40 is not less than the crest height of the corrugated plate 20, thereby ensuring that there is no direct contact between the corrugated plate 20 and the tunnel surrounding rock 10. It is easy to understand that grouting can be used for filling after the support device 100 for the tunnel surrounding rock is constructed.
[0043] In one embodiment, the corrugated plate 20 is made of metal. Preferably, the corrugated plate 20 is made of steel; the conduit 202 is made of fiber material, preferably a fiber-reinforced flexible hose, which allows it to be more easily attached to the corrugated plate 20.
[0044] Figure 2 This is a schematic diagram of the water circulation unit 200 in the circulating cooling device according to the present invention.
[0045] like Figure 2As shown, according to a second aspect of the present invention, a circulating cooling device is provided, comprising a water circulation unit 200 and a support device 100 adapted to the water circulation unit 200 as described above. Preferably, the water circulation unit 200 includes a circulation manifold 201 laid on the second crest 22 of the corrugated plate 20, and a water supply mechanism 203 connected to the circulation manifold 201.
[0046] In one embodiment, the circulation manifold 201 is configured in an S-shape and is evenly distributed on the corrugated plate 20. Preferably, the circulation manifold 201 consists of a plurality of pipes 202 connected end to end.
[0047] In one embodiment, the water supply mechanism 203 is arranged inside the tunnel, and the spacing is adjusted according to the actual situation, typically within the range of 30-50m. Preferably, the water supply mechanism 203 is a device integrating water temperature detection and hydraulic delivery, mainly comprising a water temperature sensor (not shown) and a water pump (not shown).
[0048] In one embodiment, such as Figure 2 As shown, a heat dissipation mechanism 204 is provided at the end of the circulation manifold 201. Preferably, the heat dissipation mechanism 204 mainly utilizes geothermal resources to provide heat energy to meet external needs, such as geothermal hot springs, residential heating, and thermal power generation.
[0049] In this invention, the water circulation unit 200 can be used for heat absorption and secondary development and utilization of geothermal resources in high-temperature tunnel environments. It not only reduces the internal temperature during tunnel construction and operation, thereby ensuring the health and safety of workers and the safety and stability of tunnel support structures, but also realizes the recycling of geothermal resources.
[0050] Compared with existing technologies, the advantages of this utility model are:
[0051] Firstly, the corrugated plate 20 in this utility model is preferably a high-strength, high-toughness corrugated plate, which has good flexible deformation capability. The cross-sectional structure of the corrugated plate 20 is sinusoidal, therefore, it can apply active support force to achieve active control of the prestress over a large range of the tunnel surrounding rock 10.
[0052] Furthermore, by adapting to the fasteners, the corrugated plate 20 causes the elastic support 31 to apply sufficient preload to the corrugated plate 20, further ensuring the support resistance of the corrugated plate 20 to the tunnel surrounding rock 10. Therefore, after the support is completed, it can deform in coordination with the tunnel surrounding rock 10 within a certain range to release some of the pressure on the tunnel surrounding rock 10, thereby reducing the stress and pressure on the tunnel surrounding rock 10. At the same time, the structure of the corrugated plate 20 has strong support resistance, thus preventing excessive displacement or even instability and failure of the tunnel surrounding rock 10.
[0053] Secondly, this utility model provides a filling layer 40 between the corrugated plate 20, the surrounding rock of the tunnel 10 and the pipeline 202. With its excellent mechanical properties, it can further absorb the energy released by the deformation of the surrounding rock of the tunnel 10, and thus effectively cope with situations such as high ground stress, large deformation and active fault displacement, so as to further ensure the normal stability of the internal tunnel structure.
[0054] In addition, by using UHPC concrete as an insulation layer between the tunnel surrounding rock 10 and the corrugated plate 20, the heat conduction capacity of geothermal environments such as high ground temperature can be effectively reduced, thereby further ensuring the safety of the corrugated plate 20 and the water circulation unit 200.
[0055] Thirdly, the water circulation unit 200 in this utility model can be used for heat absorption and secondary development and utilization of geothermal resources in high-temperature tunnel environments. It not only reduces the internal temperature during tunnel construction and operation, thereby ensuring the health and safety of workers and the safety and stability of tunnel support structures, but also realizes the recycling of geothermal resources.
[0056] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.
[0057] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components.
[0058] Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0059] The above are merely preferred embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art can easily make changes or modifications within the scope of this utility model, and such changes or modifications should be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A support device for tunnel surrounding rock, characterized in that, include: A corrugated plate (20) is installed below the surrounding rock (10) of the tunnel. The fastener includes an elastic bracket (31) that abuts against the lower end face of the corrugated plate (20), an anchor rod (32) that extends longitudinally through the surrounding rock of the tunnel (10) and the corrugated plate (20) and is adapted to the elastic bracket (31), and a bolt (33) that is sleeved on the anchor rod (32) and used to pre-tighten the elastic bracket (31).
2. The support device for tunnel surrounding rock according to claim 1, characterized in that, The corrugated plate (20) has a sinusoidal cross-sectional structure.
3. The support device for tunnel surrounding rock according to claim 2, characterized in that, The corrugated plate (20) includes a first crest (21) in an odd-numbered column and a second crest (22) in an even-numbered column for accommodating the pipe (202), wherein the elastic support (31) is disposed within the first crest (21).
4. The support device for tunnel surrounding rock according to claim 3, characterized in that, The length of the anchor rod (32) is not less than 3m.
5. The support device for tunnel surrounding rock according to claim 4, characterized in that, A filling layer (40) is provided between the corrugated plate (20), the surrounding rock of the tunnel (10) and the pipeline (202), and the thickness of the filling layer (40) is not less than the crest height of the corrugated plate (20).
6. The support device for tunnel surrounding rock according to claim 5, characterized in that, The filling layer (40) is made of UHPC concrete and water, and the filling layer (40) is filled by grouting.
7. The support device for tunnel surrounding rock according to claim 6, characterized in that, The corrugated plate (20) is made of metal, and the pipe (202) is made of fiber.
8. A circulating cooling device, characterized in that, The device includes a water circulation unit and a support device adapted to the water circulation unit according to any one of claims 1 to 7, wherein the water circulation unit includes a circulation manifold (201) laid on the second crest (22) of the corrugated plate (20) and a water supply mechanism (203) connected to the circulation manifold (201).
9. The circulating cooling device according to claim 8, characterized in that, The circulation manifold (201) is constructed in an S-shape and consists of several pipes (202) connected end to end.
10. The circulating cooling device according to claim 9, characterized in that, A heat dissipation mechanism (204) for providing heat energy is provided at the end of the circulation manifold (201).