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Prevention and treatment technologies of railway tunnel water inrush and mud gushing in China

查看全文 作　　者：Yong [1]Zhao;Pengfei [2]Li;Siming [1]Tian 高影响力作者 机构地区：[1]Project Design and Approval Center of Ministry of Railways;[2]College of Architecture and Civil Engineering,Beijing University of Technology高影响力机构 出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》索引2013年第5卷第6期,共10页高影响力期刊 摘　　要：Water inrush and mud gushing are one of the biggest hazards in tunnel construction. Unfavorable geological sections can be observed in almost all railway tunnels under construction or to be constructed, and vary in extent. Furthermore, due to the different heights of mountains and the lengths of tunnels, the locations of the unfavorable geological sections cannot be fully determined before construction, which increases the risk of water inrush and mud gushing. Based on numerous cases of water inrush and mud gushing in railway tunnels, the paper tries to classify water inrush and mud gushing in railway tunnels in view of the conditions of the surrounding rocks and meteorological factors associated with tunnel excavation. In addition, the causes of water inrush and mud gushing in combination of macroand micromechanisms are summarized, and site-specifc treatment method is put forward. The treatment methods include choosing a method of advance geological forecast according to risk degrees of different sections in the tunnel, determining the items of predictions, and choosing the appropriate methods, i.e. draining-oriented method, blocking-oriented method or draining-and-blocking method. The treatment technologies of railway water inrush and mud gushing are also summarized, including energy relief and pressure relief technology, advance grouting technology, and advance jet grouting technology associated with their key technical features and applicable conditions. The results in terms of treatment methods can provide reference to the prevention and treatment of tunnel water inrush and mud gushing. 关 键 词：Tunnel engineering Unfavorable geological regions Water inrush and MUD gushing Pressure RELIEF TECHNOLOGY ADVANCE GROUTING TECHNOLOGY ADVANCE jet GROUTING
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