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云南西北部铁路隧道地应力测试及工程应用
引用本文:李金锁,彭华,崔巍,马秀敏,杨绍喜,廖建设.云南西北部铁路隧道地应力测试及工程应用[J].地质力学学报,2005,11(2):135-144.
作者姓名:李金锁  彭华  崔巍  马秀敏  杨绍喜  廖建设
作者单位:1. 中国地质科学院地质力学研究所,北京,100081
2. 中国华水水电开发总公司,北京,100054
3. 四川省西南大地工程物探有限公司,成都,610072
摘    要:通过地应力测量,确定出工程区隧道围岩现今地壳应力状态,即原地应力的大小和方向。根据地应力分布特征,结合隧道围岩的力学参数,利用三维有限元对工程隧道区进行了应力场模拟。根据原地应力测量及三维计算结果进行综合分析,给出了工程区地应力的赋存规律和基本特征,并进一步分析了隧道开挖中发生岩爆等地质灾害的可能性,同时为隧道的衬砌设计、断面选择及轴线方位的确定提供可靠的科学依据。

关 键 词:地应力场  三维有限元  地质灾害
文章编号:1006-6616(2005)02-0135-10
收稿时间:2004/11/21 0:00:00
修稿时间:2004年11月21

RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN
LI Jin-suo,PENG Hu,Cui Wei,MA Xiu-min,YANG Shao-xi,LIAO Jian-she.RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN[J].Journal of Geomechanics,2005,11(2):135-144.
Authors:LI Jin-suo  PENG Hu  Cui Wei  MA Xiu-min  YANG Shao-xi  LIAO Jian-she
Affiliation:Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081,Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081,China Huashui Hydropower Development Corporation, Beijing 100054,Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081,Sichuan Southwest Dadi Engineering Geophysical Exploration Company, Chengdu 610072, Sichuan and Sichuan Southwest Dadi Engineering Geophysical Exploration Company, Chengdu 610072, Sichuan
Abstract:Rock stress state in situ is determined by the hydrofracturing method for rock stress measurement in a railway tunnel in northwestern Yunnan.According to the distribution features of the rock stress,combined with the mechanical parameters of the tunnel wall rocks,the stress filed in the tunnel area is simulated by using the three-dimensional finite elements.According to the in-situ stress measurements and three-dimensional finite element calculation,the basic features and distribution of the rock stress in engineering area are given,and the possibility of occurrence of geological hazards such as rock bursts during excavation of the tunnel is analyzed.Furthermore,the scientific basis for the lining design of the tunnel,choice of the tunnel's cross-section and determination of the axial direction of the tunnel is provided.
Keywords:rock stress  three-dimensional finite element  geological hazard  
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