| 震旦系混合岩隧道防塌防掉块几项关键技术 |
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| 引用本文： | 张宝永,包广昌,王长江.震旦系混合岩隧道防塌防掉块几项关键技术[J].现代隧道技术,2011,48(2):153-156,177. |
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| 作者姓名： | 张宝永 包广昌 王长江 |
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| 作者单位： | 中铁十九局集团有限公司兰渝铁路项目部,甘肃定西,743001 |
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| 摘 要： | 兰渝线黑山隧道震旦系混合岩地层占整条隧道长度93%,综合考虑其岩性的特性,结合施工现场地质状况,文章主要以Ⅳ级围岩为例,从爆破方案、支护措施、加强施工工艺、围岩监控量测、超前地质预报及仰拱二次衬砌方面,总结震旦系混合岩预防塌方掉块的几项关键技术。
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| 关 键 词： | 混合岩隧道 塌方 关键技术 |
Key Techniques of Collapse and Spalling Prevention for the Tunnel in Mixed Rocks of Sinian Sequence |
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| Zhang Baoyong,Bao Guangchang,Wang Changjiang.Key Techniques of Collapse and Spalling Prevention for the Tunnel in Mixed Rocks of Sinian Sequence[J].Modern Tunnelling Technology,2011,48(2):153-156,177. |
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| Authors: | Zhang Baoyong Bao Guangchang Wang Changjiang |
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| Institution: | Zhang Baoyong Bao Guangchang Wang Changjiang(Project Management Department of Lanzhou-Chongqing Railway,China Railway No.19 Construction Bureau Group Co.,Ltd.,Dingxi 743001) |
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| Abstract: | The length of mixed rocks of Simian sequence occupied more than 93% length of Heishan tunnel on Lanzhou-Chongqing railway.Considering the characteristics of lithology and geological conditions of the tunnel,several key techniques of collapse and spalling prevention for the tunnel in rocks grade IV of Simian sequence are summarized in terms of blasting options,support,reinforcement technology,monitoring and measuring of surrounding rocks,advance geological forecast and secondary lining of invert,to assure th... |
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| Keywords: | Tunnel in mixed rocks Collaspe Key techniques |
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