Tunnel arrangement structure adapting to active fault deformation

Abstract

The utility model provides a tunnel arrangement structure adapting to active fault deformation, which comprises a tunnel, a plurality of sections of lining steel plates are fixed on the inner wall side of the tunnel, concrete is poured between one side, far away from the tunnel, of each lining steel plate and an excavated rock wall, a corrugated compensator is arranged between two adjacent sections of lining steel plates, the corrugated compensators are embedded in the concrete, and the corrugated compensators are connected with the tunnel. By adopting the mode that the corrugated compensator and the lining steel plate are combined, deformation and stress generated by fault dislocation are effectively absorbed, and the overall stability and safety of the tunnel are improved. Meanwhile, the corrugated compensator and the lining steel plate have good durability and fatigue resistance, and can bear pressure and shear force caused by fault dislocation for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering, in particular to a tunnel arrangement structure adapting to active fault deformation. Background Art

[0002] With the continuous advancement of infrastructure construction in my country, tunnel engineering is increasingly being used in transportation, water conservancy, and other fields. However, tunnel engineering faces significant challenges in areas with complex geological conditions, particularly those with active faults. Fault movement can have a significant impact on tunnels traversing these faults. Both slow, continuous creep and one-time, large-scale stick-slip can damage the tunnel lining. This is especially true when tunnels traverse wide, highly active faults. Traditional tunnel layouts often struggle to adapt to these deformations, leading to damage or even destruction of the tunnel structure. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a tunnel arrangement structure that adapts to the deformation of active faults, which can solve the problem that tunnels passing through active fault areas may be damaged or even destroyed due to the displacement and deformation of the faults.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A tunnel arrangement structure adapted to active fault deformation includes a tunnel, wherein several sections of lining steel plates are fixed to the inner wall of the tunnel, concrete is poured between the side of the lining steel plates away from the tunnel and the excavated rock wall, and a corrugated compensator is provided between two adjacent sections of the lining steel plates, and the corrugated compensator is embedded in the concrete.

[0006] On the basis of adopting the above technical solutions, the present invention may also adopt the following further technical solutions, or use these further technical solutions in combination:

[0007] At least one corrugated compensator is provided every one hundred meters in the longitudinal direction of the tunnel.

[0008] A flexible filler is filled between the corrugated compensator and the concrete.

[0009] A water stop is provided on the side of the corrugated compensator facing the tunnel.

[0010] Structural steel bars are provided in the concrete.

[0011] The deformation joint on one side of the inner lining steel plate is filled with a foam board.

[0012] Compared with existing technologies, this new technology offers the following advantages and benefits: By combining a corrugated compensator with an inner lining steel plate, it effectively absorbs deformation and stress generated by fault movement, improving the overall stability and safety of the tunnel. Furthermore, both the corrugated compensator and the inner lining steel plate exhibit excellent durability and fatigue resistance, capable of withstanding the pressure and shear forces caused by fault movement over a long period of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the layout structure of the tunnel of the utility model.

[0014] Figure 2 This is a schematic diagram of the detailed structure of the corrugated compensator in the utility model.

[0015] Figure 3 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent elements with the same or similar functions. However, it should be understood that the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. In order to better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted, and the positional relationship described in the drawings is only used for illustrative purposes and cannot be understood as limiting the present invention.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] The utility model provides a tunnel arrangement structure that adapts to the deformation of active faults, including a tunnel 7, wherein several sections of lining steel plates 4 are fixed on the inner wall side of the tunnel 7, concrete 1 is poured between the side of the lining steel plates 4 away from the tunnel 7 and the excavated rock wall, and a corrugated compensator 5 is provided between two adjacent sections of the lining steel plates 4, and the corrugated compensator 5 is embedded in the concrete 1.

[0019] One or more layers of lining steel plates 4 are laid on the inner side of the lining of the tunnel 7. The lining steel plates 4 are connected by welding or bolts. The lining steel plates 4 can effectively resist the pressure and shear force generated by the fault movement and protect the main structure of the tunnel from damage.

[0020] In order to ensure good contact between the lining steel plate 4 and the concrete 1, backfill grouting is performed within 90° of the top arch of the steel lining section where the lining steel plate 4 is provided, and contact grouting is performed within 90° of the bottom arch, and the contact surface between the steel lining and the concrete base is controlled to be flat and tight.

[0021] At least one corrugated compensator 5 is provided every 100 meters in the longitudinal direction of the tunnel 7 .

[0022] The bellows compensators 5 are installed on both sides of the tunnel or at key locations where the tunnel crosses an active fault. They absorb the axial, lateral, and angular displacements caused by the fault movement. The bellows compensators consist of metal bellows and structural accessories, and have excellent elasticity and fatigue resistance.

[0023] The corrugated compensator 5 absorbs stress and deformation caused by geological changes at active faults. Based on the width and displacement characteristics of the fault zone and three-dimensional finite element seismic analysis, the corrugated compensator is required to have multi-directional displacement capabilities. The corrugated compensator is customized according to the requirements.

[0024] Flexible filler 3 (GB filler) is filled between the corrugated compensator 5 and the concrete 1 to increase the sealing of the connection. A permanent joint needs to be set in this section of concrete to reserve sufficient deformation space to cope with possible displacement. Foam board 2 is filled in the joint to adapt to deformation needs.

[0025] The use of GB (flexible) filler enhances the sealing of the joints, prevents the intrusion of moisture and harmful substances, protects the safety of the tunnel structure, extends the service life of the tunnel and reduces maintenance costs.

[0026] A water stop plate 6 is provided on the side of the corrugated compensator 5 facing the tunnel 7 to seal and stop water in the pores and gaps.

[0027] Structural steel bars are provided in the concrete 1, and small diameter steel bars are arranged at small intervals to improve the crack resistance of the concrete.

[0028] In order to make the concrete 1 and structural steel bars of the steel lining section also adapt to the displacement of the active fault, it is considered to densify the deformation joint on one side of the inner lining steel plate 4 and fill the deformation joint on one side of the inner lining steel plate 4 with foam board 2.

[0029] In order to facilitate installation, the corrugated compensator 5 can be directly buried in the tunnel after being wrapped with concrete, which simplifies the construction process.

[0030] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the tunnel arrangement structure of the present invention that adapts to active fault deformation and can produce the positive effects described in the present invention.

[0031] It should be noted that the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two mechanisms, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] In the description of this utility model, it should be understood that the terms "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," "right," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate description and simplify the description of this utility model. They do not indicate or imply that the mechanisms or components referred to must have, be constructed, or operate in a specific orientation and, therefore, should not be construed as limitations on this utility model. The terms "first" and "second" are used solely for brevity of description and do not indicate or imply relative importance.

[0033] Furthermore, in practicing the claims of the present invention, those skilled in the art may understand and effect variations to the disclosed embodiments by studying the drawings, the disclosure, and the appended claims. Furthermore, in the claims and the specification, words such as "comprising" and "including" do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made based on the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A tunnel arrangement structure adapted to active fault deformation, characterized in that: The invention comprises a tunnel (7), wherein a plurality of sections of lining steel plates (4) are fixed on the inner wall side of the tunnel (7), concrete (1) is poured between the side of the lining steel plates (4) away from the tunnel (7) and the excavated rock wall, and a corrugated compensator (5) is provided between two adjacent sections of the lining steel plates (4), and the corrugated compensator (5) is embedded in the concrete (1).

2. The tunnel arrangement structure adapted to active fault deformation according to claim 1, characterized in that: At least one corrugated compensator (5) is provided every one hundred meters in the longitudinal direction of the tunnel (7).

3. The tunnel arrangement structure adapted to active fault deformation according to claim 1, characterized in that: A flexible filler (3) is filled between the corrugated compensator (5) and the concrete (1).

4. The tunnel arrangement structure adapted to active fault deformation according to claim 1, characterized in that: A water stop plate (6) is provided on the side of the corrugated compensator (5) facing the tunnel (7).

5. The tunnel arrangement structure adapted to active fault deformation according to claim 1, characterized in that: Structural steel bars are provided in the concrete (1).

6. The tunnel arrangement structure adapted to active fault deformation according to claim 1, characterized in that: The deformation joint on one side of the inner lining steel plate (4) is filled with a foam plate (2).

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