古冲沟瞬变电磁响应特征分析及应用  

Analysis and Application of Paleogully Transient Electromagnetic Response Characteristics

作　　者：甘志超[1] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《中州煤炭》2015年第8期102-104,共3页Zhongzhou Coal

基　　金：国家科技支撑计划项目资助(2012BAB13B02-04);天地科技技术创新基金(KJ-2014-TDKC-02)

摘　　要：以新疆俄霍布拉克煤矿为研究背景,对不同含水层厚度古冲沟的地电模型的三维正演和一维反演进行分析,瞬变电磁响应特征表明有无古冲沟、不同含水层厚度的古冲沟电磁响应值有差异,古冲沟内的含水层厚度小于20 m时,瞬变电磁法对含水低阻层反映不明显,实际应用情况表明,瞬变电磁法是探测类似古冲沟的一种较好的物探方法。Taking Ehuobulake Mine in Xinjiang Uigur Autonomous Region as reasearch object,three-dimensional forward and one-dimensional inversion analysis of geoelectric model of ancient gullies with different aquifer thickness was made. Transient electromagnetic response characteristics showed difference between gully and non-gully,and gullies with different aquifer thickness. When aquifer thickness was less than 20 m,the reflection of transient electromagnetic method on low resistivity layer was not obvious. Practical application shows that,the transient electromagnetic method is an effective geophysical exploration method of similar ancient gully.

关 键 词：古冲沟 含水层厚度 瞬变电磁响应特征 一维反演 

分 类 号：P631.325[天文地球—地质矿产勘探]