胡麻岭隧道第三系富水低渗透性粉细砂地层施工方法和工程措施探讨

On Construction Methods and Measures for the Humaling Tunnel in Water-Rich Tertiary Silty Fine Sand with Low Permeability

摘要: 兰渝铁路胡麻岭隧道富水粉细砂地层施工难度大，安全风险高，被国内外专家、学者确定为国内罕见的世界性难题。为解决该地层施工中存在的问题，保证施工质量和施工安全，在选择施工方法、工程措施之前，首先对三种(矿山法、新奥法、新意法)建造理念进行了分析研究，并通过大量的现场试验和方案比选，最终选取了符合该地层的综合性的施工方法和工程措施，取得了较好的效果。

Abstract: The construction of the Humaling tunnel in a water-rich fine-sand stratum was very difficult and highly risky. To guarantee construction quality and safety, it was necessary to select the construction method carefully and perform numerous tests to determine the appropriate construction technology and measures for this situation.