过去常用直流电法(电阻率法)、地震法、电测井等物探方法调查地下水,获得了一定效果。但这些方法多用于定性测量。随着核子技术的发展,近来常常利用天然放射性探测脉状地下水;用放射性同位素测定地下水流速、流向及循环速度(地下水年龄);还可用于含水层渗透性能的确定,均取得了较好的效果。 In the past often used DC method (resistivity method), seismic method, electrical logging and other geophysical methods to investigate groundwater, obtained a certain effect. However, these methods are mostly used for qualitative measurement. With the development of nuclear technology, natural radioactive detection of vein-shaped groundwater has recently been used. Radioactive isotopes have been used to determine the velocity, direction and circulation rate of groundwater (groundwater age). It can also be used to determine the permeability of aquifers, and achieved good results .