微动和电磁波法在城市地下溶洞探测中的应用效果对比  

Comparison of Application Effect of Microtremor and Electromagnetic Wave Method in Urban Underground Cave Detection

作　　者：苏春雷[1] 王丽 Su Chunlei;Wang Li(The Second Geological Brigade of Hebei Bureau of Geology and Mineral Resources,Tangshan 063000,China)

机构地区：[1]河北省地矿局第二地质大队,河北唐山063000

出　　处：《甘肃科学学报》2021年第5期106-111,共6页Journal of Gansu Sciences

摘　　要：基于微动空间自相关SPAC探测法和电磁波CT探测法对某城市地下岩溶结构进行了探测对比分析,结果表明:在案例中,电磁波CT探测法较SPAC探测法能更为准确地探测出溶洞的位置和规模,但其依赖于钻孔或者测井,且易受地层岩性突变的影响。SPAC法虽然探测精度不如电磁波CT探测法,但却摆脱了对于钻孔或测井观测的依赖,不仅能探测出破碎带以及具有充填情况的溶洞,具有更高的探测效率和适应能力,而且还避免了对城市原始地层的扰动,具有绿色环保的优势。Based on the microtremor SPAC detection method and electromagnetic wave CT detection method,this paper makes a comparative analysis on the underground karst structure of a city.The results show that in the research case,electromagnetic wave CT detection method can detect the location and scale of karst cave more accurately than SPAC detection method,but it depends on drilling or logging,and is easily affected by the sudden change of formation lithology.Although SPAC method is not as accurate as electromagnetic wave CT method,it gets rid of the dependence on drilling or logging observation.It can not only detect broken zones and filled caves,but also has higher detection efficiency and adaptability.It also avoids the disturbance of urban original strata,and has the advantage of environmental protection.

关 键 词：微动SPAC法 电磁波CT法 城市地下溶洞 岩性 探测效率 

分 类 号：P315[天文地球—地震学] P642[天文地球—固体地球物理学]