3D numerical simulation of dynamic construction of Gezhenpu tunnel with cataclastic section

JIN Lu; JIANG An-nan; ZHAO Wen; ZHANG Jiao

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3D numerical simulation of dynamic construction of Gezhenpu tunnel with cataclastic section

更新时间：2026-06-25

- 3D numerical simulation of dynamic construction of Gezhenpu tunnel with cataclastic section
- Vol. 29, Issue S1, (2008)
- 作者机构：
  
  1. 东北大学资源与土木工程学院,沈阳,110004
  2. 大连海事大学交通与物流工程学院,大连,116026
- 作者简介：
- 基金信息：
- DOI：
  CLC： U451
- Online First：15 April 2016，
  
  Published：2008
- 稿件说明：
移动端阅览
JIN Lu, JIANG An-nan, ZHAO Wen, et al. 3D numerical simulation of dynamic construction of Gezhenpu tunnel with cataclastic section[J]. 2008, 29(S1).
DOI：

JIN Lu, JIANG An-nan, ZHAO Wen, et al. 3D numerical simulation of dynamic construction of Gezhenpu tunnel with cataclastic section[J]. 2008, 29(S1). DOI：

摘要

革镇堡隧道是辽宁省的重点建设工程，其中破碎段岩体地质条件复杂，传统方法不能很好地反映其力学行为。针对上述问题，在建立大规模的复杂地质结构的数值网格基础上，采用三维岩土工程软件FLAC3D，分别根据无支护、初次支护和二次支护3种情况，4 m一个步长，分为上下两台阶对该段隧道的分步动态施工过程进行了三维数值模拟。通过对位移场、应力场的演化情况和塑性区分布的模拟计算，分析了开挖支护动态过程的复杂力学行为。计算结果显示，位移与监测数据比较一致，现有的二次支护方案能够保证围岩的稳定性。数值模拟的结果对于该段隧道的施工具有指导意义。

Abstract

Gezhenpu tunnel is the vital construction project in Liaoning Province

its geoligical condition is complex

and there is cataclastic section exists

the conventional method can not reflect the mechanical behavior. Aiming at above problem

according to without supporting

primary supporting and secondary supporting

geotechnical engineering software FLAC3D is adopted; and large scale numerical grid is constructed

the 3D numerical simulation for dynamic construction process is carried out with 4 meters each step and upper and lower steps. Through simulating and analyzing the stress field

displacement field and plastic zones

the complex mechanical behaviors of excavation and supporting are analyzed. Calculation result shows that the displacement is in accordance with monitoring data

the original secondary supporting scheme can guarantee the stability of surrounding rock.The result of numerical simulation has guiding meaning to the tunnel construction.

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