Layered interval excavation method for large span and high sidewall underground cavern

LIU Bao-guo; XU Gan-cheng

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Layered interval excavation method for large span and high sidewall underground cavern

更新时间：2026-06-25

- Layered interval excavation method for large span and high sidewall underground cavern
- Vol. 32, Issue 9, (2011)
- 作者机构：
  
  1. 北京交通大学土建学院,北京,100044
  2. 空军工程设计研究局,北京,100068
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU45
- Online First：13 September 2011，
  
  Published：2011
- 稿件说明：
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LIU Bao-guo, XU Gan-cheng. Layered interval excavation method for large span and high sidewall underground cavern[J]. 2011, 32(9).
DOI：

LIU Bao-guo, XU Gan-cheng. Layered interval excavation method for large span and high sidewall underground cavern[J]. 2011, 32(9). DOI：

摘要

结合某大垮度、高边墙地下洞室的施工实践，详细阐述了大洞室纵向预留隔层、隔层上中下同步开挖、最后清除隔层这一新的开挖方法施工全过程。通过数值模拟，对这一新的开挖方法与自上而下台阶式开挖方法引起围岩最大变形、围岩塑性破坏和锚杆轴力进行了对比分析，结果表明，新的开挖方法对围岩的扰动破坏更小。指出了采用这种新方法的适用条件。对于其他用途大跨高边墙地下洞室的施工具有一定的参考价值。

Abstract

The layered interval excavation method for a large span and high sidewall underground cavern is described in detail. Through numerical simulation

its feasibility is proved. A large span and high sidewall cavern construction practice is as follows; detailed large cavern reserved rock clapboard

upper

middle and bottom chamber between rock clapboard parallel excavation

and finally clear the rock clapboard full of this new method of construction of the excavation process. Through numerical simulation

the largest deformation caused by excavation

distribution of plastic zone and tension of rock bolting of two excavation methods are compared. The results show that the new method of rock excavation damage to surrounding rock is small. Finally

the applicable conditions for this new method are pointed. This method has universal significance for similar conditions of underground large cavern construction.

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