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| Research on Deformation Control Technology of Tongzhai Tunnel Entrance |
| WU Fa-zhan1,FU Zheng2 |
| 1.China Railway Tunnel Group Co.Ltd,Luoyang,Henan 471009,China, 2.China Railway Tunnel Stock Co.Ltd,Zhengzhou,Henan 450003 China |
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Abstract Research purposes：Tongzhai tunnel entrance was affected by the same high stress,and other geological factors carbonaceous slate role in the early stages to 118 steel support parameters based support,the construction of large deformation occurs,arch distortion,shotcrete off,seriously affecting construction safety and progress.This paper is finding solutions to large deformation method to provide a reference for the subsequent construction.
Research conclusions：(1)In the stress deformation by the engineering test,take the anti-supporting measures,adhere to the”strong first and optimization late”principle,support in place at a time,so as to control the deformation.(2)Soft surrounding rock after excavation is timely supported,enclosing to ring as soon as possible,and timely radial grouting to effectively strengthen loose rock,improve the surrounding rock properties,reduce rock pressure effected on the supporting structure,the support and surrounding rock stress system has formed,to restrain the deformation of tunnel.(3)Reduce the times of the excavation,set the inverted arch as early as possible,control the initial support closing time strictly.(4)The control measures of deformation of tunnel carbonaceous slate can provide reference for similar engineering.
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Received: 30 October 2013
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[1]邹狮,王超朋,张文新,等.兰渝铁路木寨岭隧道炭质板岩段应力控制试验研究[J].隧道建设,2010(2)：120-124.
Zou Chong,Wang Chaopeng,Zhang Wenxin,etc.Experimental Study on Stress Control in Carbonaceous Slate Section of Muzhailing Tunnel on Lanzhou-Chongqing Railway[J].Tunnel Construction,2010(2):120-124.
[2]马伟斌,张梅,赵有明,等.高地应力软岩隧道超前洞室断面优化模拟研究[J].铁道工程学报,2011(9)：58-62.
Ma Weibin,Zhang Mei,Zhao Youming,etc.Simulation Study on the Section Optimization of the Super Pilot Tunnel in High Geo-stress Tunnel[J].Journal of Railway Engineering Society,2011(9)：58-62.
[3]徐勇,刘仲仁,王维高,等.铁路双线隧道控制大变形施工工法比选[J].隧道建设,2010(2)：134-136.
Xu Yong,Liu Zhongren,Wang weigao,etc.Comparison and Contrast among Different Construction Methods for Double-track Railway Tunnels in Soft Ground[J].Tunnel Construction,2010(2)：134-136.
[4] 叶康慨.木寨岭隧道大坪有轨斜井施工大变形段分析及处理技术[J].隧道建设,2010(2)：190-194.
Ye Kangkai.Case Study on Control of Large Deformation of Doping Inclined Shaft of Muzhaling Tunnel[J].Tunnel Construction,2010(2)：190-194.
[5]关宝树.软弱围岩隧道变形及其控制技术[J].隧道建设,2011(1)1-17.
Guan Baoshu.Deformation of Tunnels with Soft Surrounding Rocks and Its Control[J].Tunnel Construction,2011(1)：1-17.
[6]杨彦亮,李锡波,毛洪录.高地应力条件下深埋隧道开挖方式数值优选及工程应用[J].隧道建设,2013(9)：735-740.
Yang Yaniiang,Li Xiao,Mao Honglu.Numerical Optimization on the Selection of Excavation Methods for Deep Tunnels in High Stress Field and Its Engineering Application[J].Tunnel Construction,2013(9)：735- 740.
[7]赵志强.同寨隧道板岩地段大变形分析及处理技术[J].西部探矿工程,2011(12)：184-186.
Zhao Zhiqiang.Tongzhai Tunnel Slate Lots Large Deformation Analysis and Processing Technology[J].West-China Exploration Engineering, 2011(12)：184-186.
[8]何磊.兰渝铁路高地应力隧道变形的几点体会[J].铁道建筑技术,2012(8)：59-63.
He Lei.Understanding about Deformation Control of Lan-Yu Railway Tunnels under High Geological Stress[J].Railway Construction Technology,2012(8)：59-63.
[9] 葛宣彬.兰渝铁路某隧道变形控制试验分析及优化[J].西部探矿工程,2012(12)：175-178.
Ge Xuanbin.Test Analysis and Optimizing to Distortion Control of a Certain Tunnel of Lan-Yu Railway[J].West-China Exploration Engineering,2012(12)：175-178.
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2014, Vol. 31 
