中文摘要：

岩溶溶洞具有隐蔽性和不确定性,对高速公路建设会造成重大的安全隐患.应用综合物探方法对溶洞进行勘查,查明其赋存状态,以消除公路安全隐患.高密度电阻率法可以快速、准确地提供测区电阻率断面图,在探测溶洞的位置、大小和埋深等方面取得了很好的效果,但是其探测深度较浅;瞬变电磁法则显现出高分辨率、快捷、大探测深度、小探测盲区、对水的赋存状态反应敏锐等特点.综合应用高密度电阻率法和瞬变电磁法对鹤辉高速K53＋557 m处溶洞进行勘查,通过对勘查结果的综合分析,共圈出3处浅部异常区和6处深部异常区,圈定了溶洞的位置,并确定了其不同埋深.探测结果与后期钻探反馈结果基本吻合,说明综合两种物探方法在勘查溶洞方面具有可行性和有效性,可为后期公路施工提供可靠的依据.

英文摘要：

Karst caves with concealment and uncertainty,can cause major security hidden danger for highway construction.To eliminate security hidden dangers in highway,karst caves are detected with integrated geophysical survey method,and their occurrence states are found out.High-density resistivity method can provide electrical resistivity cross-section diagrams accurately and quickly,and has excellent effect in detecting the location,the size,and the depth of karst caves,but its detecting depth is shallower.Transient electromagnetic method has some characteristics,such as high resolution,high speed,big detecting depth,small detecting blind zone and keen sensitivity to water occurrence states.The karst caves in K53 ＋ 557 m in He-Hui highway were detected by the combination method of high-density resistivity method and transient electromagnetic method,after comprehensively analyzing the detecting results,three outliers in the shallow positions and six outliers in the deep positions were discovered and circled,and the locations of karst caves were circled,and their depth was determined.The exploration results are consistent with the later drilling feedback results,which illustrates the combination scheme of two geophysical survey methods is feasible and effective to detect karst caves,and it provides some reliable basis for highway construction.