The test of high-density induced polarization technique in the detection of shallow concealed lead-zinc deposits
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摘要: 使用WGMD-9超级高密度电法系统在贵州省水城仰天窝铅锌矿区已知矿床点和未知区上进行试验,表明该方法能够区分出与成矿有密切关系的二叠系下统梁山组、石炭系上统马平组的电性结构特征,能探测矿区0~150 m深度范围内梁山组砂、页岩与马平组灰岩间的接触部位,指导地表探矿坑道工程的开展,达到间接找矿目的。试验还表明高密度激电法存在供电电流受限制以及探测深度有限的不足。Abstract: The application of Chinese-made WGMD-9 super-high-density electrical system to the Yangtianwo lead-zinc ore district in Shuicheng of Guizhou Province shows that this technique can more accurately distinguish the electrical structure characteristics of the Upper Permian Liangshan Formation and the Upper Carboniferous Maping Formation which are closely related to mineralization, and can also more accurately detect the orebody buried in the contact area between the sandstone and shale of Liangshan Formation and the limestone of the Maping Formation in the depth of 0~150 m, thus guiding the implementation of surface prospecting tunnels and finally achieving the prospecting aim through"indirect" means. The results obtained also show that the high-density induced polarization tech-nique has two deficiencies, i.e., the restriction of supply current and the limited depth of detection.
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