Ground fracture stratum tunnel deformation joint anti-seepage device and construction method
A technology of anti-seepage devices and deformation joints, which is applied in tunnels, tunnel linings, underground chambers, etc., can solve problems such as failure of anti-seepage structures, limited deformation of rubber waterstops, and pull damage of rubber waterstops. Effect of erosion, significant tensile deformation properties, good crack self-sealing
Active Publication Date: 2021-06-11
XIAN UNIV OF TECH
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Problems solved by technology
Although this anti-seepage structure adopts multiple anti-seepage measures, due to the limited deformation of the rubber waterstop, once a relatively strong ground fissure activity is encountered, the uneven large deformation may cause the rubber waterstop to occur. Pull damage, resulting in failure of the anti-seepage structure
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[0047] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0048] An anti-seepage device for deformation joints of tunnels in ground fissures, including an asphalt concrete cover plate 12 arranged on the outside of deformation joints 15, and the two ends of the asphalt concrete cover plate 12 are overlapped with the outside of the secondary lining 1 of the tunnel; A J-shaped steel plate 4 is pre-embedded in the secondary lining 1 on both sides of the lower part of the cover plate 1; a U-shaped waterstop 3 is provided between the bottom surface of the asphalt concrete cover plate 2 and the secondary lining 1 of the tunnel; the inner side of the deformation joint 15 An asphalt concrete cover plate 2 9 is provided, and both ends of the asphalt concrete cover plate 2 9 are overlapped with the inner side of the secondary lining 1 of the tunnel.
[0049] The primary lining 12 is located on the periphery of...
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Abstract
The invention relates to a ground fissure stratum tunnel deformation joint anti-seepage device. The ground fissure stratum tunnel deformation joint anti-seepage device comprises an asphalt concrete cover plate I, wherein the asphalt concrete cover plate I is arranged on the outer side of a deformation joint, and both ends of the asphalt concrete cover plate I are in lap joint with tunnel secondary linings; J-shaped steel plates are respectively embedded in the secondary linings on the lower parts of the both sides of the asphalt concrete cover plate I; U-shaped GB composite water stop belts are arranged between the bottom surface of the asphalt concrete cover plate I and the tunnel secondary linings; and an asphalt concrete cover plate II is arranged on the inner side of the deformation joint, and both ends of the asphalt concrete cover plate II are in lap joint with the inner sides of the secondary linings (1). A construction method comprises the following steps of (1) preparing the asphalt concrete cover plate I and the asphalt concrete cover plate II; (2) installing and fixing the asphalt concrete cover plate I; (3) installing the water stop belts; (4) pouring secondary lining structures; (5) installing the asphalt concrete cover plate II; and (6) installing a high-strength bolt I and a high-strength bolt II. The ground fissure stratum tunnel deformation joint anti-seepage device has the characteristics of good sealing impermeability, high deformation adaptability, reasonable design and convenience in maintenance.
Description
technical field [0001] The invention belongs to the technical field of anti-seepage of deformation joints of tunnels in ground fissures, and in particular relates to an anti-seepage device and construction method for deformation joints of tunnels in ground fissures. Background technique [0002] With the development of the economy and the improvement of construction technology, some large public buildings are constantly developing towards the underground space, so more and more underground projects appear in people's lives. However, during the implementation of underground engineering, various complex geological conditions are often encountered, such as ground fissures, goafs, karst caves and depressions. Especially ground fissures, which are caused by large-area uneven subsidence of geological structures and are also closely related to human activities, are distributed throughout the country to a certain extent. The activity of ground fissures will have a great impact on c...
Claims
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Patent Timeline
Login to view more IPC IPC(8): E21D11/38E21D11/08E21D11/10
CPCE21D11/385E21D11/08E21D11/10Y02E10/20
Inventor 佘芳涛邓志鹏王松鹤周庆怡刘昌
Owner XIAN UNIV OF TECH
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