瞬变电磁法在地下洞体探测中的应用研究  

STUDY ON THE APPLICATION OF TRANSIENT ELECTROMAGNETIC METHOD TO THE DETECTION OF UNDERGROUND CAVE

作　　者：祝卫东 张瑛颖[2] 

机构地区：[1]浙江省水利经济管理中心,杭州311215 [2]浙江水利水电专科学校,杭州310018

出　　处：《建筑技术开发》2008年第11期30-32,40,共4页Building Technology Development

基　　金：浙江省地勘局科研基金资助项目(浙地勘发[2004]112号)

摘　　要：地下洞体探测是地质勘探中的一个重要课题。分析了利用瞬变电磁法探测地下洞体的若干成功案例,对不同地质环境、不同特征地下洞体的瞬变电磁探测方法应用进行了试验研究,充分认识了地下洞体的异常体形态特征,熟悉掌握了应用瞬变电磁法的技术要点。同时结合实际工程项目进行了有效验证,积累了较好的经验,为今后的地质找矿或地质灾害勘查提供了技术储备。Detection of underground cave is an important task in geological exploration. The paper analyses some successful cases of detecting underground cave by transient electromagnetism method. Some experiments and studies to detect underground caves with different characteristics in diverse geological environments by transient electromagnetism method are done, and some abnormal characteristic of underground caves are recognized, and some technological outlines of transient electromagnetism method are known. Meanwhile effective verifies are made in combination with some practical cases. All this accumulates good experiences, and provides technological storage for geological prospecting and exploration of geological hazards in future.

关 键 词：瞬变电磁法 地下洞体 回线长度 低阻覆盖厚度 勘探深度 

分 类 号：P631.325[天文地球—地质矿产勘探]