摘要
电磁波层析成像(CT)技术野外观测系统是在两个钻孔之间的二维平面上进行的,现场是在一个钻孔内放置发射机(发射点),而在另一个钻孔内放置接收机(接收点),从而得到电磁波在两孔之间介质中的透射数据。通过对原始数据几何交汇法分析,可初步确定异常分布范围,再结合地质情况利用反射投影法建立反演初始模型,利用建立的初始模型对实测电磁波CT数据联合反演,最终推断出岩溶发育区段的位置。为岩溶工程处理提供可靠依据。
The field survey system of electromagnetic wave CT is carried out on the 2D plane between 2 drill holes,transmitter is set up in a drill hole,whereas receiver set up in another hole,the transmission data of electromagnetic wave in the medium between 2 holes could be received.According to the geometrical intersect analysis of original data,the distribution range of anomaly can be preliminarily determined.The inversion preliminary model is set up with reflection projection method in combination to the geological situation.The measured electromagnetic wave CT data model is jointly inversed with the set up preliminary model.Finally,the development site of karst area could be deduced,as the reliable basis of karst engineering treatment.
作者
何思璇
王时平
HE Si-xuan;WANG Shi-ping(Kunming Institute Company(Ltd)of exploration and Design,China Electric Power Construction Group,Kunming 650051)
出处
《云南地质》
2021年第3期372-379,共8页
Yunnan Geology
