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MODERN TUNNELLING TECHNOLOGY 2013, Vol. 50 Issue (4) :170-175    DOI:
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Cause Analysis and Treatment Principles for Tunnel Lining Cracking
in Sandy Mudstone with High Geostress
（1  Lanzhou-Chongqing Railway Co. Ltd., Lanzhou  730050;
2  China Railway Eryuan Engineering Group Co. Ltd., Chengdu  610031）
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Abstract    Using the abnormal cracking in the Xuanzhenguan tunnel on the Lanzhou-Chongqing railway as case study, this paper seeks the causes of the cracking by examining the tunnel structure, support measures, construction situations, ground properties, high geostress, etc. A qualitative and quantitative analysis, with a combination of supplementary exploration and numerical analysis, was conducted in order to understand the main causes of the tunnel lining cracking in the sandy mudstone. As a result, high geostress was proven to be the main cause, and treatment principles are given accordingly.
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Keywords：     Railway tunnel   Lining cracking   High geo-stress   Squeezing rock   Numerical analysis     
Abstract：    Using the abnormal cracking in the Xuanzhenguan tunnel on the Lanzhou-Chongqing railway as case study, this paper seeks the causes of the cracking by examining the tunnel structure, support measures, construction situations, ground properties, high geostress, etc. A qualitative and quantitative analysis, with a combination of supplementary exploration and numerical analysis, was conducted in order to understand the main causes of the tunnel lining cracking in the sandy mudstone. As a result, high geostress was proven to be the main cause, and treatment principles are given accordingly.
Keywords：  ,   Railway tunnel,   Lining cracking,   High geo-stress,   Squeezing rock,   Numerical analysis     
published: 2013-05-28
Cite this article:   
.Cause Analysis and Treatment Principles for Tunnel Lining Cracking
in Sandy Mudstone with High Geostress[J]  MODERN TUNNELLING TECHNOLOGY, 2013,V50(4): 170-175
URL:  
http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2013/V50/I4/170
　
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