我们采矿专业73级毕业班工农兵学员,参加了云南省一个露天磷矿的开采方案设计工作并完成了采矿部分的设计任务。在设计中对几个问题有以下一些肤浅的体会。(一)矿床地质简况磷矿床以炭硅质层状磷块岩产出。矿层产状比较稳定,变化不大。走向南北,倾向正东,倾角7～20°, We graduated 73 class workers and peasant trainees in the mining field, participated in the design of an open-pit phosphate mining project in Yunnan Province and completed the design task of the mining section. In the design of several issues have some superficial experience. (A) Geological Profiles of Deposits Phosphorus deposits are produced from carbonaceous silical layered phosphorite. The shape of the mine is relatively stable, little change. To the north and south, tend to the east, dip 7 ~ 20 °,