CSAMT在河南郁山大型隐伏铝土矿勘查中的应用

摘要

Combining the application of this method in the exploration of the Yushan large-size concealed bauxite deposit in Henan Province and the exploration characteristics of the covered mining area,this paper discusses the advantage of CSAMT for the pre-survey and survey of concealed bauxite deposits. The exploration depth of the Yushan concealed bauxite deposit in Henan Province is generally 150 ~700 m, which is so deep that the conventional D. C. electric sounding method cannot meet the needs. The Controlled Source Audio-frequency Magnetotellurics (CSAMT) is a new geophysical technique, and has such advantages as stronger signal, deeper exploration depth and higher resolution. Based on the inversion result of WINGLINK2D and WINGLINK1D, it can accurately reflect the characteristics of deep ore-bearing rock series, formations and structures, and optimize the layout of the project.%通过河南郁山隐伏铝土矿详查中的应用实例,结合覆盖区矿区勘查特点,对可控源音频大地电磁法(CSAMT)在测量隐伏铝土矿勘查中的作用进行了总结.河南郁山隐伏铝土矿勘查深度为150～700 m,常规的直流电测深法很难在勘查深度上满足需要.而基于CSAMT的WINGLINK2D和WINGLINKlD反演结果,能准确反映深部含矿岩系、地层及构造的特征,为合理优化工程布置打下了良好的基础.