【摘要】 铁路隧道周围一定范围内的岩溶洞穴及断层构造,都将对隧道施工产生安全隐患,本文阐述采用EH?4电导率成像系统的高频大地电磁法能够准确快速的探测一定深度范围内的溶洞、断层等地质构造,对施工区的地质构造和岩溶的赋存状态进行超前的宏观预测,并将野外的成功实例进行分析。更多还原

【Abstract】 Karst caverns and faults around the railroad present a great threat to the safety of railroad tunnel construction. In this paper, the authors explored applicability of the high frequency MT method by using the stratagem^TM EH-4 electrical conductivity image-forming system for advance detection of the karst caverns and faults within a specified depth. At the end of the paper a case study is presented to demonstrate its application.更多还原