Study of mechanical behavior and reinforcing measures of middle rock wall of parallel tunnel with small interval

YAO Yong; HE Chuan; XIE Zhuo-xiong

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Study of mechanical behavior and reinforcing measures of middle rock wall of parallel tunnel with small interval

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- Study of mechanical behavior and reinforcing measures of middle rock wall of parallel tunnel with small interval
- Vol. 28, Issue 9, (2007)
- 作者机构：
  
  1. ．西南交通大学地下工程系,成都,610031
  2. 西南科技大学土木工程学院,四川,绵阳,621002
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU451
- Online First：15 October 2013，
  
  Published：2007
- 稿件说明：
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YAO Yong, HE Chuan, XIE Zhuo-xiong. Study of mechanical behavior and reinforcing measures of middle rock wall of parallel tunnel with small interval[J]. 2007, 28(9).
DOI：

YAO Yong, HE Chuan, XIE Zhuo-xiong. Study of mechanical behavior and reinforcing measures of middle rock wall of parallel tunnel with small interval[J]. 2007, 28(9). DOI：

摘要

采用二维弹塑性数值计算方法，对Ⅲ，Ⅳ，Ⅴ级围岩条件下平行布设的双洞隧道中夹岩墙受力、变形特点随隧道间距变化的情况进行了研究。研究结果表明，对于两隧道间距较小的小净距隧道，中夹岩墙的受力、变形极为不利，是设计、施工和监控量测的关键部位。同时研究了不同隧道埋深以及不同岩柱加固措施对小净距隧道中夹岩墙受力、变形特点的影响，为小净距隧道的支护设计、开挖方式、岩墙加固方式选取以及现场监控量测方案制定等提供指导。

Abstract

Applying 2D elastoplastic numerical calculation method and under the conditions of surrounding rocks of grades Ⅲ

Ⅳand Ⅴ

the characteristics of stress and deformation of middle rock wall in parallelly laid twin tunnel are studied. The findings show that the stress and deformation of middle rock wall are adverse due to the parallel tunnel with smaller interval; and these locations are very critical for design

construction and monitoring measurements. At the same time

the effects of different buried depths and different reinforcing measures of rock wall on stress and deformation of the tunnels with small interval

are also studied

so as to provide guidance for design of support

selection of excavation method

reinforcing method of rock wall and monitoring plans.

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