Simulating study on construction process of tunnels with small spacing for different classes of surrounding rocks

LI Yun-peng; WANG Zhi-yin; HAN Chang-ling; HUO Ming; AI Chuan-zhi

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Simulating study on construction process of tunnels with small spacing for different classes of surrounding rocks

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- Simulating study on construction process of tunnels with small spacing for different classes of surrounding rocks
- Vol. 27, Issue 1, (2006)
- 作者机构：
  
  1. 中国石油大学机电工程学院,北京,102249
  2. 中交第一公路勘察设计院,西安,710075
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU457
- Online First：31 October 2013，
  
  Published：2006
- 稿件说明：
移动端阅览
LI Yun-peng, WANG Zhi-yin, HAN Chang-ling, et al. Simulating study on construction process of tunnels with small spacing for different classes of surrounding rocks[J]. 2006, 27(1).
DOI：

LI Yun-peng, WANG Zhi-yin, HAN Chang-ling, et al. Simulating study on construction process of tunnels with small spacing for different classes of surrounding rocks[J]. 2006, 27(1). DOI：

摘要

从不同围岩类别出发，对3车道小间距隧道采用典型双侧导坑法的开挖施工过程进行了数值模拟研究。给出了不同围岩类型下的3车道小间距隧道在施工过程中的围岩破坏特征及其变形规律和变形规律的相似性，获得了洞周最大变形量值之间的相对比值关系。通过中隔墙的变形与塑性破坏规律分析，比选出了3车道隧道中隔墙最小间距的工程设计参考值。分析表明：II类围岩合理间距不应小于0.45B，III类围岩应在0.35～0.45B之间，IV，V类围岩可在0.2～0.35B之间选择，对信息化反馈施工，指出了必须重点监控与关注的位置。为小间距隧道的发展和施工设计提供了较确切的参考数据和理论依据。

Abstract

Based on different classes of surrounding rocks

the numerical simulation of construction process is studied for three roadway tunnels with small spacing

adopting the typical method of double side excavation. The damage characteristic and the deformation law of surrounding rocks are given in the construction process for the different classes of surrounding rocks of three driveway tunnels. The comparability of the distributive law of deformation along the tunnel boundary is indicated for different classes of surrounding rocks; and the relative ratio of maximum displacement is obtained. By comparing the deformation and the plastic damage law in the interval wall between tunnels

the minimum spacing is selected for engineering design reference in three roadway tunnels. It is shown from analysis that the reasonable spacing is more than 0.45B for surrounding rock class II and between 0.35B and 0.45B for surrounding rock class III and between 0.20B and 0.35B for surrounding rock classification IV and V. The key locations of measurement and control are given for the feedback information construction

and these provide the reference data and the theoretical basis for the development and construction design of highway tunnels with small spacing.

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