应用大地电磁法TE、TM模式勘查构造裂隙水  

THE TECHNOLOGICAL APPLICATION OF TE AND TM MODE TO THE PROSPECTING FOR STRUCTURAL FISSURE WATER

作　　者：武毅[1] 封绍武[1] 王亚清 

机构地区：[1]中国地质调查局水文地质环境地质调查中心,河北保定071051 [2]秦皇岛矿产水文工程地质大队,河北秦皇岛066001

出　　处：《物探与化探》2011年第3期329-332,共4页Geophysical and Geochemical Exploration

基　　金："十一五"国家科技支撑计划课题(2006BAD01B00);中国地质调查局地质大调查项目(1212010634714)

摘　　要：基岩山区地下水类型以构造裂隙水为主,而山区构造裂隙发育具有各向异性以及容易受地形影响的特点。为此,研究了大地电磁测深法TM、TE两种观测模式的响应特征,认为通过这两种观测模式的对比应用,可以清晰地了解地层的各向异性,且TE观测模式在识别构造空间分布特征方面更具有突出的优势。在太行山区的实际应用验证了该技术的有效性,为山区构造裂隙水的勘查提供了新的技术支撑。Groundwater in the bedrock mountain area is mainly structural fissure water.As development of the mountain structural fissures has no direction and is easily impacted by terrain conditions,some conventional geophysical technologies have their limitations,which adversely affects the prospecting result.Based on a study of both ＂TM＂ and ＂TE＂ observation mode response characteristics by the audio magnetotelluric sounding method,the authors have found that the comparative application of two observation modes can obviously lead to know the anisotropy of strata,with the TE observation mode showing better performance in identifying the spatial distribution of structures.Through the practice application in Taihang Mountain area,the availability of the technique has been verified,thus providing supporting technology for the prospecting of structural fissure water in mountain areas.

关 键 词：构造裂隙水 TM、TE模式响应特征 地下水勘察 

分 类 号：P631[天文地球—地质矿产勘探]