摘要
超前地质预报有助于提前了解掌子面前方围岩结构变化及可能的地质灾害情况,制定针对性的施工对策,修正施工方案以避免险情发生。鹰嘴岩隧道右线借鉴岩溶超前预报结果,采取小导管超前支护,I18工字钢架加强支护,清除岩溶洞穴内充填物,对溶腔进行回填处理,并预留排水通道的方法,以消除隐患。
Advanced geological prediction contributes to understand structural changes of wall rock in front of tunnel face and possible geological disasters in advance, and to take targeted construction countermeasures and modify construction plan so as to avoid dangerous situations. For right line of Yingzuiyan Tunnel, this paper by reference to advanced prediction result adopts small duct leading support and reinforced support with I18 I-beam bracket to remove fills in karst cavities and processes karst chamber with backfilling and takes method of reserving drainage channels to eliminate hidden dangers.
出处
《公路交通技术》
2014年第2期89-90,96,共3页
Technology of Highway and Transport
关键词
公路隧道
岩溶
超前地质预报
处理
highway tunnel
karst
advanced geological prediction
process
