Tunnel shallow-buried broken section surrounding rock reinforcing device
By setting up surrounding rock crushing areas and complete areas on the surrounding rocks in the shallow buried crushing section of the tunnel, and using reinforcement and other structures, the problem that a single anchor cannot ensure the stability of surrounding rocks is solved, and the surrounding rocks in the shallow buried crushing section of the tunnel are realized effective support and stability guarantee.
Patent Information
- Application Number
- CN202420632732.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The solidity of the surrounding rock of the shallow buried broken section of the tunnel cannot be ensured by using anchor rods alone.
A surrounding rock reinforcement device for shallow buried crushing section of the tunnel was designed. By setting up surrounding rock crushing areas and surrounding rock complete areas on the tunnel, and using components such as reinforcement, through holes, embedded holes and liquid injection concrete, anchor rods, The structures of adjustment plates, reinforcement inclined plates, reinforcement caps, and reduce grinding pads are achieved to achieve stable support for surrounding rocks.
Through the combination of multiple structures, the device ensures the stability of the surrounding rock in the shallow buried broken section of the tunnel, avoids the defect that a single anchor cannot effectively support it, and improves the overall stability of the surrounding rock.
Smart Images
Figure CN222141292U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of geotechnical engineering support, in particular to a surrounding rock reinforcement device for a shallow buried broken section of a tunnel. Background Art
[0002] A tunnel is an engineering structure that runs through mountains or water-blocking areas. It plays an important role in transportation, energy, water conservancy, environment and other fields. The shallow buried surrounding rock refers to the strata that are close to the surface, shallow in depth and not very hard. Currently, during the excavation of tunnel projects, an important feature of surrounding rock damage is the zonal fracture phenomenon of the shallow buried surrounding rock structure of the tunnel.
[0003] At present, anchor rods are a kind of artificial reinforcement device commonly used in surrounding rock support. Its anchoring effect can make the structure and the surrounding rock tightly combined into a whole, and have a certain control over the radial and non-radial deformation of the rock mass, thereby achieving the purpose of stable support. However, the sole use of anchor rods to reinforce the surrounding rock of the shallow buried broken section of the tunnel cannot ensure the stability of the surrounding rock of the shallow buried broken section. Therefore, we proposed a surrounding rock reinforcement device for the shallow buried broken section of the tunnel. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the shortcomings of the prior art, the utility model provides a tunnel shallow buried broken section surrounding rock reinforcement device, which has the advantages of conveniently supporting the tunnel shallow buried broken section surrounding rock and ensuring the stability of the shallow buried broken section surrounding rock, and solves the problem that the shallow buried broken section surrounding rock of the tunnel is not ensured by reinforcing the shallow buried broken section surrounding rock with anchor rods alone.
[0006] (II) Technical solution
[0007] In order to achieve the above-mentioned purpose of conveniently supporting the surrounding rock of the shallow buried broken section of the tunnel and ensuring the stability of the surrounding rock of the shallow buried broken section, the utility model provides the following technical solutions: a surrounding rock reinforcement device for the shallow buried broken section of the tunnel, comprising a tunnel, the outer surface of the tunnel is provided with a surrounding rock crushing area, the outer surface of the surrounding rock crushing area is provided with a surrounding rock integrity area, and a reinforcement piece is provided on the tunnel, and the reinforcement piece is connected with the surrounding rock integrity area through the surrounding rock crushing area, so as to support the surrounding rock of the shallow buried broken section of the tunnel, thereby ensuring the stability of the surrounding rock of the shallow buried broken section.
[0008] As a preferred technical solution of the utility model, the interior of the tunnel is provided with through holes, which are arranged in a curved linear array. The inner cavity of the through holes is movably connected to the reinforcement member, and the reinforcement member is inserted through the inner cavity of the through holes to facilitate the installation of the reinforcement member.
[0009] As a preferred technical solution of the utility model, pre-embedded holes are opened inside the intact area of the surrounding rock, and the pre-embedded holes are arranged in a curved linear array. The inner cavity of the pre-embedded hole is fixedly connected to the reinforcement piece by liquid injection concrete. The reinforcement piece is pre-embedded in the inner cavity of the pre-embedded hole, and then the reinforcement piece is fixed in the pre-embedded hole by using liquid injection concrete, thereby facilitating the fixing of the reinforcement piece.
[0010] As a preferred technical solution of the utility model, the reinforcement part includes an anchor rod, one end of which is fixedly connected to the inner cavity of the embedded hole through liquid injection concrete, and the outer surface of the anchor rod is provided with a reinforcement structure, and the reinforcement structure is located in the surrounding rock crushing area. By setting the reinforcement structure in the surrounding rock crushing, it is convenient to support the surrounding rock of the shallow buried crushing section of the tunnel, thereby ensuring the stability of the surrounding rock of the shallow buried crushing section.
[0011] As a preferred technical solution of the utility model, a wear-reducing pad is threadedly sleeved on the outer surface of the other end of the anchor rod, one side of the wear-reducing pad is movably connected to the tunnel, a gasket is sleeved on the outer surface of the anchor rod, the gasket and the other side of the wear-reducing pad are movably connected, a fastening nut is threadedly connected on the outer surface of the anchor rod, one side of the fastening nut is movably connected to the gasket, and the wear-reducing pad and the gasket are sequentially sleeved on the anchor rod, and then the nut is screwed and tightened until it is fixed on the anchor rod, thereby facilitating the support of the surrounding rock of the shallow buried broken section of the tunnel.
[0012] As a preferred technical solution of the utility model, the reinforcement structure includes an adjustment plate, which is movably connected to the outer surface of the tunnel, and the inside of the adjustment plate is movably connected to the outer surface of the anchor rod. A reinforcement inclined plate is fixedly installed on the outer surface of the adjustment plate, and the end of the reinforcement inclined plate away from the adjustment plate is movably connected to the inner side of the intact area of the surrounding rock. A reinforcement cap is movably connected to the top of the adjustment plate, and the inner cavity of the reinforcement cap is threadedly connected to the outer surface of the anchor rod, so as to support the surrounding rock of the shallow buried broken section of the tunnel and ensure the stability of the surrounding rock of the shallow buried broken section.
[0013] As a preferred technical solution of the utility model, a threaded hole is provided inside the adjusting plate, and the inner cavity of the threaded hole is threadedly connected to the external thread on the anchor rod, so that the adjusting plate can be moved on the anchor rod.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides a tunnel shallow buried broken section surrounding rock reinforcement device, which has the following beneficial effects:
[0016] The tunnel shallow buried broken section surrounding rock reinforcement device, by using liquid concrete to fix one end of the anchor rod to the embedded hole, and at the same time, the reinforcement cap and the adjustment plate fixed with the reinforcement inclined plate are sequentially assembled on the outer surface of the anchor rod and located at the surrounding rock broken area, and then the screw adjustment plate and the reinforcement cap are sequentially screwed, at this time, the screw adjustment plate and the reinforcement cap are both threadedly moved on the outer surface of the anchor rod until the adjustment plate is adjusted to contact with the outer surface of the tunnel, and at the same time, the end of the reinforcement inclined plate away from the adjustment plate contacts with the inner side of the surrounding rock complete area, and the reinforcement cap fixes the adjustment plate, and then the wear-reducing pad and one side of the gasket are sequentially sleeved on the other end of the anchor rod, at this time, the wear-reducing pad contacts with the inner side of the tunnel, and then the screw tightening nut is screwed, and at this time, the tightening nut is threadedly moved on the outer surface of the anchor rod until the wear-reducing pad and the gasket are fixed on the anchor rod, thereby facilitating the support of the surrounding rock of the shallow buried broken section of the tunnel and ensuring the stability of the surrounding rock of the shallow buried broken section. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a main stereoscopic view of the utility model;
[0018] Figure 2 This is an exploded perspective view of the utility model;
[0019] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;
[0020] Figure 4 This is an exploded perspective view of the reinforcement member of the utility model.
[0021] In the figure: 1, tunnel; 11, through hole; 2, surrounding rock crushing area; 3, surrounding rock intact area; 31, embedded hole; 4, reinforcement piece; 41, anchor rod; 421, adjustment plate; 422, reinforcement inclined plate; 423, reinforcement cap; 43, wear-reducing pad; 44, gasket; 45, fastening nut. DETAILED DESCRIPTION
[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0023] Reference Figure 1-4 , provides a surrounding rock reinforcement device for a shallow buried crushed section of a tunnel, comprising a tunnel 1, a surrounding rock crushing area 2 is arranged on the outer surface of the tunnel 1, a surrounding rock integrity area 3 is arranged on the outer surface of the surrounding rock crushing area 2, a reinforcement member 4 is arranged on the tunnel 1, and the reinforcement member 4 is connected to the surrounding rock integrity area 3 through the surrounding rock crushing area 2.
[0024] The tunnel 1 is provided with through holes 11 arranged in a curved linear array, and the inner cavity of the through holes 11 is movably connected to the reinforcement member 4 .
[0025] Pre-buried holes 31 are opened inside the intact surrounding rock area 3 . The pre-buried holes 31 are arranged in a curved linear array. The inner cavity of the pre-buried holes 31 is fixedly connected to the reinforcement member 4 through injection of liquid concrete.
[0026] The reinforcement member 4 includes an anchor rod 41 , one end of which is fixedly connected to the inner cavity of the embedded hole 31 through liquid concrete injection, and a reinforcement structure is provided on the outer surface of the anchor rod 41 , and the reinforcement structure is located in the surrounding rock crushing area 2 .
[0027] A wear-reducing pad 43 is threadedly sleeved on the outer surface of the other end of the anchor rod 41, and one side of the wear-reducing pad 43 is movably connected to the tunnel 1. A gasket 44 is sleeved on the outer surface of the anchor rod 41, and the gasket 44 is movably connected to the other side of the wear-reducing pad 43. A fastening nut 45 is threadedly connected to the outer surface of the anchor rod 41, and one side of the fastening nut 45 is movably connected to the gasket 44.
[0028] The reinforcement structure includes an adjustment plate 421, which is movably connected to the outer surface of the tunnel 1, and the interior of the adjustment plate 421 is movably connected to the outer surface of the anchor rod 41. A reinforcement inclined plate 422 is fixedly installed on the outer surface of the adjustment plate 421, and one end of the reinforcement inclined plate 422 away from the adjustment plate 421 is movably connected to the inner side of the intact surrounding rock area 3. A reinforcement cap 423 is movably connected to the top of the adjustment plate 421, and the inner cavity of the reinforcement cap 423 is threadedly connected to the outer surface of the anchor rod 41.
[0029] A threaded hole is provided inside the adjusting plate 421 , and the inner cavity of the threaded hole is threadedly connected to the external thread on the anchor rod 41 .
[0030] Working principle: During use, one end of the anchor rod 41 is fixed to the embedded hole 31 by injecting liquid concrete, and the reinforcing cap 423 and the adjusting plate 421 fixed with the reinforcing inclined plate 422 are assembled to the outer surface of the anchor rod 41 in sequence, and located in the surrounding rock crushing area 2, and then the screw adjusting plate 421 and the reinforcing cap 423 are screwed in sequence, at this time, the screw adjusting plate 421 and the reinforcing cap 423 are both threadedly moved on the outer surface of the anchor rod 41 until the adjusting plate 421 is adjusted to contact with the outer surface of the tunnel 1, and at the same time, the end of the reinforcing inclined plate 422 away from the adjusting plate 421 is in contact with the inner surface of the surrounding rock integrity area 3 The reinforcing cap 423 fixes the adjusting plate 421, and then the wear-reducing pad 43 and one side of the gasket 44 are sleeved on the other end of the anchor rod 41 in turn. At this time, the wear-reducing pad 43 contacts the inner side of the tunnel 1, and then the nut 45 is screwed and tightened. At this time, the tightening nut 45 moves on the outer surface of the anchor rod 41 until the wear-reducing pad 43 and the gasket 44 are fixed on the anchor rod 41, so as to facilitate the support of the surrounding rock of the shallow buried broken section of the tunnel and ensure the stability of the surrounding rock of the shallow buried broken section. The device is not only convenient for supporting the surrounding rock of the shallow buried broken section of the tunnel, but also can ensure the stability of the surrounding rock of the shallow buried broken section.
[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A tunnel shallow buried broken section surrounding rock reinforcement device, comprising a tunnel (1), characterized in that: The outer surface of the tunnel (1) is provided with a surrounding rock crushing zone (2), the outer surface of the surrounding rock crushing zone (2) is provided with a surrounding rock integrity zone (3), and a reinforcement member (4) is provided on the tunnel (1), and the reinforcement member (4) is connected to the surrounding rock integrity zone (3) through the surrounding rock crushing zone (2); The tunnel (1) is provided with through holes (11) arranged in a curved linear array, and the inner cavity of the through holes (11) is movably connected to the reinforcement member (4); Pre-buried holes (31) are provided inside the intact surrounding rock area (3), the pre-buried holes (31) are arranged in a curved linear array, and the inner cavity of the pre-buried holes (31) is fixedly connected to the reinforcement member (4) through injection concrete; The reinforcement member (4) comprises an anchor rod (41), one end of the anchor rod (41) is fixedly connected to the inner cavity of the pre-buried hole (31) through injection concrete, and a reinforcement structure is provided on the outer surface of the anchor rod (41), and the reinforcement structure is located in the surrounding rock crushing area (2); The reinforcement structure comprises an adjustment plate (421), wherein the adjustment plate (421) is movably connected to the outer surface of the tunnel (1), the interior of the adjustment plate (421) is movably connected to the outer surface of the anchor rod (41), a reinforcement inclined plate (422) is fixedly mounted on the outer surface of the adjustment plate (421), an end of the reinforcement inclined plate (422) away from the adjustment plate (421) is movably connected to the inner side of the intact surrounding rock zone (3), a reinforcement cap (423) is movably connected to the top end of the adjustment plate (421), and an inner cavity of the reinforcement cap (423) is threadedly connected to the outer surface of the anchor rod (41).
2. The surrounding rock reinforcement device for shallow buried broken section of a tunnel according to claim 1 is characterized by: The outer surface of the other end of the anchor rod (41) is threadedly sleeved with a wear-reducing pad (43), one side of the wear-reducing pad (43) is movably connected to the tunnel (1), the outer surface of the anchor rod (41) is sleeved with a gasket (44), the gasket (44) and the other side of the wear-reducing pad (43) are movably connected, the outer surface of the anchor rod (41) is threadedly sleeved with a fastening nut (45), one side of the fastening nut (45) is movably connected to the gasket (44).
3. The surrounding rock reinforcement device for shallow buried broken section of a tunnel according to claim 1 is characterized by: A threaded hole is provided inside the adjustment plate (421), and the inner cavity of the threaded hole is threadedly connected to the external thread on the anchor rod (41).