Deformation monitoring method for shallow-buried excavation tunnel construction

A technology of shallow buried underground excavation and tunnel construction, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., to achieve the effects of comprehensive monitoring data, convenient construction, and stable embedding

Active Publication Date: 2015-04-29
CHINA RAILWAY 20 BUREAU GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But nowadays, there are very few construction materials for reference in the construction of shallow buried tunnels passing through the bun

Method used

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  • Deformation monitoring method for shallow-buried excavation tunnel construction
  • Deformation monitoring method for shallow-buried excavation tunnel construction
  • Deformation monitoring method for shallow-buried excavation tunnel construction

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Embodiment Construction

[0057] Such as figure 1 A deformation monitoring method for the construction of a shallow-buried tunnel is shown, comprising the following steps:

[0058] Step 1. Tunnel excavation construction: Excavate the tunnel hole of the shallow buried tunnel under construction from the back to the front. Describe the primary support structure of the tunnel hole.

[0059] combine figure 2 The initial support structure of the tunnel hole includes multiple grid steel frames supporting the tunnel hole from the back to the front, and the grid steel frame is hung on the inner wall of the tunnel hole after the support is completed. A layer of reinforcement mesh and the reinforcement mesh are hung and dug into the concrete layer sprayed on the inner wall of the tunnel hole, and the grid steel frame and the reinforcement mesh are fixed in the concrete layer; The structures of the grid steel frames are all the same, and they are arranged from back to front along the longitudinal extension dir...

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Abstract

The invention discloses a deformation monitoring method for shallow-buried excavation tunnel construction. The deformation monitoring method comprises the following steps: 1) digging a tunnel: digging a tunnel cavity for a constructed shallow-buried excavation tunnel from back to front, primarily supporting the dug tunnel cavity from back to front during the digging process, and forming a primary supporting structure, wherein the primary supporting structure comprises a plurality of grating steel frames for supporting the tunnel cavity from back to front, and each grating steel frame is composed of an arch supporting steel frame and left and right vertical supporting steel frames; 2) arranging monitoring points: arranging multiple sets of supporting state monitoring points on the primary supporting structure of the constructed tunnel cavity from back to front during the digging process, and meanwhile, arranging a plurality of ground surface settlement monitoring points in a construction area of the constructed shallow-buried excavation tunnel from back to front; 3) monitoring the deformation. The method provided by the invention has the advantages of simple steps, reasonable design, convenience in construction, good use effect and capability of effectively monitoring the stability of the constructed shallow-buried excavation tunnel and the ground surface settlement.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a deformation monitoring method for shallow-buried tunnel construction. Background technique [0002] Compared with the open-cut method, the construction of the subway tunnel by the shallow-buried underground excavation method has the advantages of low demolition cost and small traffic impact. Compared with the shield tunneling method, it has strong adaptability to the stratum and is suitable for various cross-section types. , has the advantages of low cost and small investment. With the large-scale construction of urban rail transit in my country, shallow buried excavation construction will become more and more important in urban underground engineering construction, especially the construction technology of underground excavation tunnels passing through buildings and structures, it is necessary to control the stability of the tunnel into the hole index a...

Claims

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Application Information

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IPC IPC(8): E21F11/00E21D11/10
CPCE21D9/00E21D11/10E21D11/14E21F17/18
Inventor 吴应明郭朋超仲维玲刘冰范振芳
Owner CHINA RAILWAY 20 BUREAU GRP
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