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| 卸荷效应下牛湖山隧道围岩应力分析 | |
| 引用本文： | 黄生文,司铁汉,冯建伟,曹云强.卸荷效应下牛湖山隧道围岩应力分析[J].地下空间与工程学报,2009,5(1). |
| 作者姓名： | 黄生文 司铁汉 冯建伟 曹云强 |
| 作者单位： | 1. 长沙理工大学,长沙,410076 2. 中国公路工程咨询集团有限公司,武汉中咨路桥设计研究院有限公司,武汉,430050 3. 广东省惠州市道路桥梁勘察设计院,惠州,516000 |
| 摘 要： | 以卸荷非线性岩体力学为基础,借助目前基于加载岩体力学理论所编制的计算软件,对牛湖山大跨径隧道进行更符合围岩实际情况的三维有限元模拟,进而分析在一个完整的施工循环内围岩应力变化的情况及原因,以及受开挖影响的围岩范围与开挖面的距离关系,从而得出上台阶的开挖对围岩的影响程度最大,其次为左侧导洞的开挖,而下台阶的开挖对围岩影响程度最小;对围岩影响较大的范围在开挖面前后6m以内,着重关注的范围在开挖面前后3m左右的距离,为今后施工提供更具指导性的动态信息. |
| 关 键 词： | 大跨径隧道 开挖影响 卸荷岩体 围岩应力 有限元 |
Analysis of Surrounding Rock Pressure of Niuhushan Tunnel Under Unloading Effect |
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| HUANG Sheng-wen,SI Tie-han,FENG Jian-wei,CAO Yun-qiang.Analysis of Surrounding Rock Pressure of Niuhushan Tunnel Under Unloading Effect[J].Chinese Journal of Underground Space and Engineering,2009,5(1). | |
| Authors: | HUANG Sheng-wen SI Tie-han FENG Jian-wei CAO Yun-qiang |
| Affiliation: | 1.Changsha University of Science and Technology;Changsha 410076;P.R.China;2.China Highway Engineering Consultant Group;Ltd;Wuhan Zhongzi Highway and Bridge Engineering Design Institute;Wuhan 430050;3.Guangdong Huizhou Highway and Bridge Engineering Design Institute;Huizhou 516000;P.R.China |
| Abstract: | Based on the unloading non-linear rock mechanics,using the computation software established on the theory of loading rock mechanics,the Niuhushan tunnel was imitated by more objective three-dimension FEM.So the distribution and the variation reason of surrounding rock stress were analyzed and the distance between the influenced surrounding rock and the excavation plane was studied,and the results are as following: the influence of the excavation of upper bench to the surrounding rock was maximal;and the the... |
| Keywords: | excavation influence unloading rock large-span tunnel surrounding rock pressure FEM |
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