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木寨岭铁路隧道斜井大变形的控制技术探讨
引用本文:肖万明,周亦涛,路维.木寨岭铁路隧道斜井大变形的控制技术探讨[J].国防交通工程与技术,2011,9(5):21-24.
作者姓名:肖万明  周亦涛  路维
作者单位:1. 中铁隧道集团有限公司,河南洛阳,471009
2. 河北工程技术高等专科学校,河北沧州,061001
摘    要:为了寻找高地应力软岩隧道的大变形控制措施,对在建的兰渝铁路木寨岭隧道大战沟斜井薄层炭质板岩段进行了多种大变形控制方法的试验。试验说明:木寨岭隧道的大变形是不可避免的,但是可控的;超前小导坑、导洞和大钻孔进行应力释放对控制大变形是非常有效的,但就其进度而言,还有待完善;小幅增加初期支护刚度加套拱支护对大变形控制也是有效的...

关 键 词:高地应力  软岩隧道  炭质板岩  大变形  控制技术

An Exploration into the Control Techniques for Great Deformation of the Inclined Shaft of the Muzhailing Railway Tunnel
Xiao Wanming,Zhou Yitao,Lu Wei.An Exploration into the Control Techniques for Great Deformation of the Inclined Shaft of the Muzhailing Railway Tunnel[J].Traffic Engineering and Technology for National Defence,2011,9(5):21-24.
Authors:Xiao Wanming  Zhou Yitao  Lu Wei
Institution:1. The Tunnel Group Co. Ltd. ,the Ministry of Railways of the PRC,Luoyang 471009,China; 2. Hebei Engineering and Technical College,Cangzhou 061001 ,China)
Abstract:In order to search for the control techniques for great deformation of the tunnel sections in soft rock with high ground stress, deformation-controlling tests are made of the carbonaceous slate sections of the Dazhangou inclined shaft of the Muzhail- ing Tunnel of the Lanzhou-Chongqing Railway. The tests show that the great deformation of the Muzhailing Tunnel is inevitable but controllable. The tests also show that they are very effective in controlling great deformation after pilot little-tunnels,pilot heading and advanced large-diameter bored holes are adopted to release the stress. However, as far as the progress is concerned, these technical measures still need further improving. In addition,installing protective arch afthr primary support whose rigidity is increased by a small margin is also effective in controlling great deformation, but the cost of the tunnel project will be in- creased. In order effectively to control great deformation, it is highly advisable that the rigidity of the primary support steel frame be increased by a big margin,the space between the steel-frames be reasonably reduced, and in the geologically complex sections, advanced large-diameter bored holes be adopted to release crustal stress besides other technical measures.
Keywords:high crustal stress  soft-rocked tunnel  carbonaceous slate ~ great deformation~ control technique
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