摘要
淡水、咸水明显的物性差异表现于电阻率差异方面,淡水表现为电阻率高,咸水因富含电解质而表现为低电阻率特征,这种物性差异为开展电法类物探方法进行综合判断地下水属性奠定了基础。本文主要介绍了常用于浅层水勘探的高频大地电磁测深法、直流电阻率测深法、激电测深法工作原理,并阐明了上述地球物理勘探方法在地下浅层水勘查中的作用,结合实例展示了综合地球物理勘探在划分地下淡水、咸水方面的实际应用及效果。
The clear physical difference between the freshwater and salty water is in the aspect of difference in resistivity, the former is higher and the later is lower because of rich in electrolyte, which laid foundation for developing such kind of geophysical prospecting to integrative judging the underground water attribute. The paper mainly introduced the work principle of High Frequency Magnetotelluric Sounding method, DC Resistivity Sounding and Induced Polarization Sounding commonly used for shallow water prospecting, expounded the role of abovementioned geophysical prospecting methods in prospecting of shallow underground water and showed practical application and effects of integrative geophysical prospecting in identifying freshwater from salty water in combination with real cases.
出处
《物探装备》
2008年第6期399-401,共3页
Equipment for Geophysical Prospecting
关键词
综合地球物理勘探
电阻率
电磁法
地下淡水
咸水
integrative geophysical prospecting, resistivity, electro-magnetic method, underground freshwater, salty water
