大极距激发极化测深在榆神矿区水文物探中的应用

Application of large polar distance induced polarization sounding in the hydrogeological exploration of Yushen mining area

激发极化测深能获得多种参数,尤其是极化率等参数与地下水含量的相关性较强、较单一,但微弱的二次场信号使大极距测量难以实施。通过实例介绍了大极距激发极化测深的原理、工作方法及在水文地质勘查中的应用。结果表明,大极距激发极化测深在勘查矿区含水层空间分布及富水情况时,解释精度高,成果较可靠,勘查效果明显。

Induced polarization sounding can obtain various parameters,especially the polarizability which has strong correlation with the groundwater content.But it is difficult to implement the large polar distance measurement when the secondary field signal is weak.Combined with examples,the principle,working method and its application in hydrogeology exploration of large polar distance induced polarization sounding was introduced.The result shows that the large polar distance induced polarization sounding has the advantages of high accuracy of interpretation,reliable result and obvious exploration effect in the exploration of mine aquifer spatial distribution and water abundance.