摘要
西南某铁路隧道全长2 438 m,隧址区工程地质条件复杂,特别是在进口段,存在含水量丰富的深厚风化层,受断层构造的影响,围岩及边坡稳定性差,边坡出现了滑坍。通过现场补充测绘、钻探等方法,对饱水风化层的工程地质特征进行了详勘,隧道采用明墙暗拱的方式通过,并对边坡及隧道边墙进行抗滑桩加固,解除了施工及运营的安全隐患。
A railway tunnel in southwest China is of 2 438 m. It had a complex geological condition, especially at the tunnel entrance, there was a deep mantlerock with plenty of water. The stability of the surrounding rock and the slope was weak because the fauhage leaded to the slope collapse. According to the on-site surveying and drilling, the engineering geological characteristics of the saturated weathered layer were explored in detail. So the tunnel was passed through by the opening-wall and buring-arch method, and the slope and the tunnel wall were fastened by anti-slide pile. The hidden danger of the slide in the construction and the running was removed.
作者
王勇刚
Wang Yonggang(China Railway Siyuan Survey and Design Group Co. Ltd. , Wuhan Hubei 430063, Chin)
出处
《铁道建筑技术》
2018年第6期69-71,109,共4页
Railway Construction Technology
基金
既有铁路岩溶塌陷勘察及整治技术研究(铁四院科研项目2013K23)
关键词
隧道病害
整治
明墙暗拱
抗滑桩
tunnel disease
repair
opening-wall and buring-arch
anti-slide pile
