Research on calculation method of digging length in tunnel with underground excavation under shallow cover

WANG Zhi-da; GONG Xiao-nan; CAI Zhi-jun

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Research on calculation method of digging length in tunnel with underground excavation under shallow cover

更新时间：2026-06-25

- Research on calculation method of digging length in tunnel with underground excavation under shallow cover
- Vol. 28, Issue S1, (2007)
- 作者机构：
  
  1. 浙江大学岩土工程研究所,杭州,310027
  2. 金堆城钼业集团有限公司工程管理处，华县,714102
- 作者简介：
- 基金信息：
- DOI：
  CLC： U452
- Online First：28 March 2014，
  
  Published：2007
- 稿件说明：
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WANG Zhi-da, GONG Xiao-nan, CAI Zhi-jun. Research on calculation method of digging length in tunnel with underground excavation under shallow cover[J]. 2007, 28(S1).
DOI：

WANG Zhi-da, GONG Xiao-nan, CAI Zhi-jun. Research on calculation method of digging length in tunnel with underground excavation under shallow cover[J]. 2007, 28(S1). DOI：

摘要

浅埋暗挖隧道施工过程中，合理确定开挖进尺的大小至关重要，开挖进尺过小，则开挖工期延长，临时支护增加；开挖进尺过大，易引起隧道上覆土层不稳定，甚至塌方。从普氏平衡拱理论和太沙基松散介质理论出发，推导了开挖进尺的计算公式，并结合工程实例进行了分析。结果表明，所推公式具有合理性。

Abstract

In the process of construction of the tunnel underground cutting with shallow overburden，it is crucial to rationally delimit the size of digging length. If the size of digging length is too small

the construction time will be prolonged and temporary protection will increase. If the size is too large

the earth on the top of the tunnel will be unstable

it will even collapse. Based on equilibrium arch theory and Terzaghi’s loose medium theory

this paper proposes the calculating formula of digging length and analyzes loose medium in a construction project.

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Related Author

WANG Zhi-da

GONG Xiao-nan

Related Institution

MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310027, China 2. Hangzhou Municipal Public Construction Development Company

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