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Method for adapting to large stratigraphic uniform sedimentation or dislocation of open trench tunnel

A technology for tunnels and strata, applied in the field of tunnels, can solve problems such as ineffectiveness, and achieve the effects of simple structure, avoidance of damage, and reliable quality

Inactive Publication Date: 2007-02-14
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In the tunnel engineering of the prior art, there is no effective method for ground fissures caused by uneven settlement or displacement of a large number of strata, for example, displacements above 10 mm

Method used

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  • Method for adapting to large stratigraphic uniform sedimentation or dislocation of open trench tunnel

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Experimental program
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Embodiment

[0019] The steps that the present embodiment method adopts are:

[0020] Choose to design an enlarged rectangular section, the profile size of which is greater than that of the standard section of an open-cut structure tunnel, if the difference is Δ, the value of Δ should be designed according to the maximum vertical dimension of the ground fissure within the design period within the design range. For the estimated value of displacement, consider a certain safety factor to determine the design value Δ.

[0021] Afterwards, reserve space for structural deformation, design and expand the rectangular section, bounded by the estimated position of the ground fissure 6 caused by uneven subsidence or dislocation of the stratum, and open-cut construction at both ends, and pour the rectangular structure in sections 1. Rectangular structure 3, with seam 2 in between.

[0022] Grouting pipes are reserved in the rectangular structures 1 and 3 on both sides of the joint 2, and grouting pi...

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Abstract

A method for adapting nonuniform subsidence or dislocation of mass-value stratum by open trench tunnel includes selecting, designing and expanding rectangular section; applying preestimated position of ground fissure caused by stratum nonuniform subsidence or dislocation as boundary line and applying cut and cover tunneling means at two ends to cast rectangular tunnel in sectional way.

Description

technical field [0001] The invention relates to tunnels, in particular to a method for an open-cut structure tunnel to adapt to uneven settlement or dislocation of a large number of strata. Background technique [0002] Ground fissure is a phenomenon that the surface rock and soil layer cracks under the action of natural factors and human factors and forms cracks of a certain length and width on the ground. Ground fissures are the result of superposition of multiple factors. In the active system of ground fissures, the main cause of formation is natural geological processes, supplemented by human factors. The activities of ground fissures have the characteristics of deformation in three-dimensional space, manifested as vertical settlement, horizontal tension and twisting. [0003] Because the activity of ground fissures is a dynamic change process, the causes, mechanisms and types are very complex, and it has obvious segmental activity characteristics according to different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D29/16
Inventor 曹文宏乔宗昭曹伟飚管攀峰沈张勇朱祖熹陆明
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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