Construction method of shallow-buried subsurface-excavated cross-shaped cross-strut tunnel

A technology for tunnel construction and shallow burial and underground excavation, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc. It can solve the problems of large water leakage in tunnels, large cross-sections in tunnel excavations, and vaults falling off blocks, etc., and achieves improved The effect of excavation and excavation efficiency, shortening the construction period, and saving rigid costs

Active Publication Date: 2016-03-30
ZHONGJIAN SUIDAO CONSTR CO LTD
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Problems solved by technology

[0004] The invention provides a construction method for shallow-buried tunnels with cross-braces to solve the problem that the current tunnel tunnels have large sections and unique geo

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  • Construction method of shallow-buried subsurface-excavated cross-shaped cross-strut tunnel
  • Construction method of shallow-buried subsurface-excavated cross-shaped cross-strut tunnel
  • Construction method of shallow-buried subsurface-excavated cross-shaped cross-strut tunnel

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[0032] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention may be implemented in a variety of different ways defined and covered below.

[0033] figure 1 It is a structural block diagram of the construction of a cross brace tunnel with shallow buried and hidden excavation in a preferred embodiment of the present invention; figure 2 Is a schematic structural diagram of a cross section of a tunnel in a preferred embodiment of the present invention; image 3 It is a schematic structural diagram of the tunnel along the construction direction in a preferred embodiment of the present invention.

[0034] Such as figure 1 As shown, the construction method of the shallow buried and undercut cross brace tunnel of this embodiment includes the following steps: a. Prepare for construction, divide the construction area according to the designed tunnel cross section, and divide the tunnel cross section i...

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Abstract

The invention discloses a construction method of a shallow-buried subsurface-excavated cross-shaped cross-strut tunnel. The method includes the following steps of conducting construction preparation, conducting measurement and pay-off on a tunnel advanced support and the tunnel contour line according to construction design requirements, conducting advanced geological forecasting through the geophysical prospecting advanced geological forecasting and drilling advanced geological forecasting combined mode, conducting advanced pipe shed grouting and advanced curtain grouting, checking the grouting effect, entering the next procedure if the grouting effect meets the construction requirement, conducting advanced pipe shed and advanced curtain grouting again if the grouting effect does not meet the construction requirement, conducting excavation support construction on construction areas on by one from top to bottom and from left to right, conducting primary support and temporary support sealing and conducting monitoring and measuring after the primary tunnel transverse end face construction is completed, repeatedly executing the steps for the next circulation of construction if the design requirement is met, conducting support strengthening if the design requirement is not met, and regulating excavation parameters to conduct excavation support construction again till the design requirement is met.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a construction method for a shallow-buried tunnel with cross braces. Background technique [0002] With the continuous expansion and development of my country's transportation construction, underground excavation projects are developing in a trend of shallow burial depth, poor stratum lithology, abundant groundwater, and complex surrounding environments. Shallow burial and underground excavation have the characteristics of low cost, less demolition, flexibility, no need for too many special equipment, and no interference with ground traffic and the surrounding environment, so it is widely used in various underground underground excavation projects. [0003] In recent years, in order to improve urban traffic conditions and save land, urban rail transit construction has sprung up and developed rapidly. At the same time, in order to select the most favorable operating r...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D9/10E21D9/12E21D11/10
CPCE21D9/00E21D9/003E21D9/10E21D9/122E21D11/10
Inventor 刘德张家识黄毅翔郑邦友罗伟庭王维邝利军李金求
Owner ZHONGJIAN SUIDAO CONSTR CO LTD
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