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河南铝土矿床严格受基底古岩溶地貌控制 ,矿体赋存于底板灰岩古岩溶凹斗中。探明古岩溶地貌起伏特征 ,就可以间接推断铝土矿分布情况及其空间特征。根据铝土矿与上覆地层及下伏奥陶系灰岩电阻率的差异 ,应用电测深法可以有效探测铝土矿底板奥陶系灰岩起伏状态 ,从而判断鸡窝状铝土矿体的形态和空间分布位置 ,这样缩小黄土覆盖区隐伏盲矿体的找矿靶区 ,避免直接钻探找矿盲目性、风险性。
Henan bauxite strictly controlled by the basement ancient karst landforms, ore bodies occur in the floor limestone karst pit. To ascertain the undulating features of ancient karst landforms, we can indirectly infer the distribution of bauxite and its spatial characteristics. According to the difference between the resistivity of bauxite and overlying strata and underlying Ordovician limestone, the electrical sounding method can effectively detect the undulation state of Ordovician limestone in the bauxite floor, The shape and the spatial distribution of the location, so as to reduce the buried area of loess blind ore prospecting target area, to avoid direct drilling prospecting blindness, risk.