昆阳磷矿位于云南昆明市郊,是我国第一大磷矿。磷矿体分上下两层,上层平均厚5.78米,下层平均厚3.16米。中间夹层是白色页岩,一般厚2米左右。矿体倾角15°～30°。矿体主要复盖表土和黑色页岩。一采区年产70万吨矿石,目前已由山坡露天转入凹陷露天开采。为了解决一采区排土问题,采用了沿走向分期开采方案,划分为东西两个部分,先采西部上部和东部矿体, Kunyang Phosphate Rock is located in Kunming, Yunnan suburbs, is China’s largest phosphate rock. Phosphorite body points up and down two layers, the average thickness of the upper 5.78 meters, the average thickness of the lower 3.16 meters. The middle layer is white shale, generally about 2 meters thick. Ore body inclination 15 ° ~ 30 °. The ore body mainly covers topsoil and black shale. A mining area with an annual output of 700,000 tons of ore, has now been transferred from the open pit open pit mining. In order to solve the problem of soil dumping in a mining area, a staged mining plan along the strike was adopted and divided into two parts, that is, the first mining of the upper and the eastern ore bodies in the west,