刚果布谷马西矿区钾盐矿北部矿段盐类沉积缺失浅析

Brief Analysis of Salt Deposition Deficiency in the Northern Section of Potash Deposit in Bugumaxi Mining Area in Congo

摘要:

根据盐类矿层分布特征，布谷马西钾盐矿床以奎卢河为界可分为南部、北部2个矿段，通过二维地震勘探、钻探、岩矿测试等技术手段对2个矿段进行了较详细勘查，根据对2个矿段的沉积特征、岩性及二维地震特征对比分析，2个矿段虽然同处于刚果盆地内，但沉积特征存在一定差异，南部矿段矿层沉积较稳定，北部矿段受断裂构造影响，盐类沉积上部多发育裂隙、溶蚀、塌陷等，导致北部矿段Ⅲ，Ⅳ岩性段出现沉积缺失。

Abstract:

According to the distribution characteristics of salt deposits, Bugumaxi potash deposit can be divided into south section and north section with the Kouilou River as the boundary. By using 2D earthquake, drilling, rock and mineral testing and other technical means, two ore sections have been explored in detail. According to comparative analysis of the sedimentary characteristics, lithology and 2D earthquake characteristics of the two ore sections, although the two ore sections are in the Congo Basin, there is a certain difference in sedimentary characteristics. The ore deposits in the southern ore section are relatively stable, while the northern ore section is affected by the fault structure. There are many cracks, dissolution, and collapse in the upper part of the salt deposit, which has caused the lack of sedimentation in the Ⅲ and IV lithologic sections in the north ore section.