贵州瓮福磷矿英坪矿段A矿层开采技术经济条件

Mining Technical and Economical Conditions of A Ore Seam of Yingping Ore Section of Wengfu Phosphatic Mine in Guizhou Province

瓮福磷矿英坪矿段A矿层分布于高坪背斜东翼南段向东倾斜的单斜构造中,赋矿地层为上震旦统陡山沱组第二段。结合该矿层地质勘查成果,详细分析了矿床地质特征,并对该矿层的开采技术经济条件进行了探讨。研究表明:该矿层投资偿还期为3 a,投资收益率为73.65%,高于目前国内参考的基准收益率(10%)指标,该矿层未来开采经济效益良好。

A ore seam of Yingping ore section of Wengfu Phosphatic Mine is distributed in the uniclinal structure inclined to the east, which is located in the south section of the east margin of Gaoping an- ticline. The second seciton of Ddoushantuo Formaiton of Upper Sinian is the metallogenic strata. Based on the geological prosepcting results of A ore section, the geological characteristics of the ore-bodies and ore characteristics are discussed, and the mining technical and economical conditions of the ore section are studied. The study results show that the investment repayment period is 3 years,the rate of retum on in- vestment is 73.65% ,which is higher than the domestic reference benchmark yield rate indicator （10%）.