回线源瞬变电磁法在地质灾害调查中的应用  

THE APPLICATION OF THE LOOP-SOURCE TRANSIENT ELECTROMAGNETIC METHOD TO GEOLOGICAL DISASTER INVESTIGATION

作　　者：郭文波[1] 宋建平[1] 曹捷 李正宇[3] 樊金生 吕学成 

机构地区：[1]西安交通大学电信学院,陕西西安710049 [2]西北有色地质勘查局物化探总队,陕西西安710068 [3]长安大学理学院,陕西西安710054

出　　处：《物探与化探》2006年第4期327-329,333,共4页Geophysical and Geochemical Exploration

摘　　要：针对工程与地质灾害调查要求解决精细构造的问题,投入了近年来广泛应用于工程勘测的回线源瞬变电磁探测。分析了瞬变电磁测深的特点,该方法体积效应小,等值作用范围较直流测深和频率测深窄,故横向和纵向分辨率高。通过2个实例的成功应用,说明回线源瞬变电磁在探测构造破碎带、煤田采空区等方面的应用效果。The small structure survey problems should be solved in the project performance and the geological disaster investigation. The transient electromagnetic method volume effect of loop-source is small. The equivalent action sphere is narrower than the galvanic resistivity sounding method and the frequency sounding. So the transverse and the longitudinal resolution is high. The application of the TEM to detecting the faulted structure fracture zone and the coalfield mined-out zone can yield good effects.

关 键 词：回线源 瞬变电磁法 地质灾害 煤田采空区 

分 类 号：P631.3[天文地球—地质矿产勘探]