摘要
为解决隧道穿越富水岩溶塌落柱段施工难题,通过平行导坑、迂回导坑实施超前水平钻孔探明塌落柱范围,对塌落柱发育进行分析,提出集水钻孔排水降压、超前周边注浆、拱墙范围径向注浆以及隧底袖阀管注浆等措施,有效降低了隧道施工风险。
In order to solve the construction problem of collapse column section of tunnel through water-rich karst.The range of collapse column is explored by advanced horizontal drilling through parallel and roundabout guide pits.Meanwhile,the development of collapse column was analyzed.Measures such as drainage and depressurization of catchment hole,advance grouting of peripheral area,radial grouting of arch wall and grouting of sleeve valve pipe of tunnel bottom are put forward.These measures effectively reduce the risk of tunnel construction.
作者
王芳
汪勇
郑杰元
Wang Fang;Wang Yong;Zheng Jieyuan(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)
出处
《山西建筑》
2021年第12期109-111,179,共4页
Shanxi Architecture
关键词
岩溶隧道
岩溶塌落柱
施工处理技术
karst tunnel
karst collapse column
contruction treatment technology
