深部矿产勘查的地震学方法：问题与前景——铜陵矿集区的应用实例
Seismic method for deep mineral exploration:Problems and prospects-A case study of the Tongling ore district
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摘要: 深部资源是未来资源勘查的重要方向，地震技术在深部资源勘查中具有不可替代的优势。为试验该方法在探测深部“层控”矿床和浅表容矿构造方面的有效性，进一步完善金属矿地震勘查技术，在铜陵矿集区进行了反射地震和首波地震层析方法试验。结果显示，反射地震技术可以精确确定研究区的主要容矿层位石炭系黄龙组与泥盆系五通组接触面的空间分布，并能清晰反映地表5km深度内的大尺度结构、构造；首波地震层析技术可以揭示浅表岩体形态。试验结果表明，该技术对在中国东部“第二富集带”寻找深部“层控”矿床具有潜在的应用价值，预示着广阔的应用前景。Abstract: The search for deeper mineral resources is an important direction in the future exploration, and the seismic technique has great advantages in deeper mineral exploration that other methods cannot compete with. In order to test its effectiveness in detecting deep "stratabound" deposits and shallow ore-hosting structure and perfect the seismic exploration technique for metallic mineral deposits, the authors carried out seismic reflection and head-wave tomographic imaging experiments in the Tongling ore district. The results show that the method can accurately determine the distribution of the ore-bearing horizon, the contact zone between the Devonian Wutong Formation and Carboniferous Huanglong Formation, and also the large-scale structure within 5 km below the surface. The head-wave tomographic imaging may reveal the morphology of the shallow-surface rock bodies. The methods show potential value for searching for "stratabound" mineral deposits in the deep "second ore-concentration belts" in eastern China and show broad prospects for their application.
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