摘要
某隧道工程是穿越城市内湖的一条主干路,是城市二环线的分流通道。根据湖底隧道初、详勘结果,隧道与道路接线部分下伏基岩主要为石灰岩等可溶岩,岩溶发育等级为强发育。岩溶对设计、施工和隧道运营安全影响较大,为了查明岩溶发育特征,采用钻探和物探对已揭露碳酸盐岩的区段进行岩溶专项勘察。钻探采用钻孔及抽芯的方法,物探采用孔内彩色电视、孔间电磁波CT、孔间弹性波CT,为隧道岩溶的加固及处理提供准确的勘察数据。
The tunnel project is an urban trunk road through an urban lake,and it is a diversion channel of the second ring road.According to the preliminary and detailed survey results of the lake tunnel,the bedrock under the tunnel and road connection are mainly soluble rocks like limestone,and the Karst development grade is strongly developed.Karst has a great impact on the tunnel design,construction and operation safety.In order to find out the Karst development characteristics,drilling and geophysical exploration were used to carry out Karst special investigation on the sections of the exposed carbonate rocks.Drilling is done by drilling holes and core-pulling,borehole digital TV,cross-hole electromagnetic wave CT,and crosshole elastic waves CT are used for geophysical exploration,which provides accurate survey data for the reinforcement and treatment of the tunnel Karst.
出处
《重庆建筑》
2023年第1期61-64,共4页
Chongqing Architecture
基金
国家自然科学基金项目(51778508)。
关键词
岩溶隧道
钻探
钻孔彩色电视
孔间电磁波CT
孔间弹性波CT
karst tunnel
drilling
borehole digital TV
cross-hole electromagnetic wave CT
cross-hole elastic waves CT
