刚果布谷马西钾盐矿区南部矿段工程地质条件分析

Analysis on Engineering Geological Condition in South Ore Section of Sylvine Mining Areas in Mboukoumassi

摘要:

布谷马西钾盐矿区位于刚果共和国奎卢省黑角市北约30 km处。根据矿层分布情况，以奎卢河为界将该矿区划分为南、北2个矿段。南部矿段钾盐矿层厚度大，分布连续，有益组分含量较高，现已进行了详查。矿层埋藏较深，上部盐岩层完整性好，下部盐岩层多发育Ⅳ级结构面，完整性不均一,工程地质条件程度为复杂。经综合分析竖井宜建在比利村及向南2 km的ZK201孔附近，该区岩层稳定，岩体完整程度高，构造相对不发育，建井时要注意岩体完整性差部位的浇铸支护，以防发生坍塌、突水等不良地质现象。

Abstract:

Mboukomassi sylvine mining areas is located in 30km north of Pointe Noire of Kouilou province in the Republic of Congo. According to the distribution of ore bed, this orefield can be divided into two ore sections: the north ore section and the south ore section, and the Kouilou River is the boundary line. In the south ore section, the sylvine miningore bed has large thickness, continuous distribution and the higher useful composition. Now, detailed exploration has been carried out. Its integrity is not uniform and engineering geological condtions are complicted. According to comprehensive analysis, vertical shaft should be built in Moili village and near to the ZK201 hole which is located 2km south of the Moili village. Due to unstable rock strata, completed rock formation and less developed structures, pouring and supporting work in the strata with poor integrity should be paid more attention in constructing wells. Thus, bad collaps and water bursting can be prevented.