勘查区内大面积浮土掩盖、基岩露头少，为了迅速圈定找矿靶区查明深部电性和地质情况，我们在有利区域开展了地球物理测深工作。通过物性测量和对比试验发现该区岩（矿）石普遍具有高阻特性，利用单一电阻率参数很难进行有效对比和分析，对此我们选择了直流激电测深方法开展工作。通过该方法的顺利实施，初步确定了下伏高极化体的性质和空间展布并指导了钻孔布设，工程施工取得了良好的效果同时也为后续勘查指明了方向。本文对测深工作方法和测量效果进行了详细介绍，对深部异常进行了推断解释，以期对类似地区隐伏斑岩型铜多金属矿勘查有所参考。%Large areas in the exploration area in Tibet is covered with dust ,in order to prospect target rapidly and find out the electrical property and the geological condition in deep ,we carried out a geophysical sounding in the favorable areas .Physical measurement and experiment showed that the rock and ore in there generally have high resistance characteristics ,it is difficult to carry out effective comparison and analysis .So we selected the DC electrical sounding of induced polarization .By sounding ,we have known the nature and distribution of the underlying high polarization body preliminarily and guided the borehole layout .The engineering construction achieved good result and guided the follow-up survey .This paper introduces the working method and measuring effect in detail in order to provide a reference about the exploration of the deep porphyry copper polymetallic ore in similar areas .
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