沙厂2#隧道左线塌方处理  

The treatment of the collapse on the left line in the 2# tunnel of sand plant

作　　者：杨文国 

机构地区：[1]中铁五局集团第一工程有限责任公司,湖南长沙410117

出　　处：《企业技术开发》2010年第12期57-60,共4页Technological Development of Enterprise

摘　　要：针对复杂地质造成的隧道坍方灾害,文章结合沙厂2#隧道坍方处理施工详细介绍了采用大管棚、超前小导管、径向小导管注浆固结坍体,然后进行三台阶法开挖、衬砌紧跟的坍方处理施工技术方案。Against the tunnel collapse disaster caused by complex geology, combined with the treatment construction of the 2# tunnel of sand plant, this paper introduces in detail the construction technical scheme of the collapse treatment that injects grouting with big pipeline shed,leading small pipe and radial-direction small pipe to consolidate collapse body,then excavates with three steps method and lining follows closely.

关 键 词：隧道 坍方处理 注浆 三台阶法 

分 类 号：U458.3[建筑科学—桥梁与隧道工程]