黄梅磷矿自1966年建矿以来,历时16年一直沿用巷道采矿法。1982年该矿与武汉化工学院合作,共同承担了湖北省科委下达的对黄梅磷矿倾斜中厚矿体采矿方法的研究任务,至1984年因故中断,未能完成。1989年1月起又继续对该专题进行研究,经过一年多的试验,各项技术经济指标均获得了预期的效果。试验的方法为无底柱低分段空场出矿崩落法。回收率由原来的30％～40％提高到72.32％,贫化率为7.89％。 一、地质概况 Huangmei phosphate rock mine has been built since 1966, which lasted 16 years has been using roadway mining law. In 1982, the mine cooperated with Wuhan Institute of Chemical Technology and undertook the research task entrusted by Hubei Province Science and Technology Committee to the mining method of inclined-thick medium-sized orebody of Huangmei phosphate rock. In 1984, it failed to complete due to some interruptions. Since January 1989, the project has been continuously studied. After more than one year of trial, all technical and economic indicators have achieved the expected results. The test method for the low-end pillarless low-field open-pit caving method. The recovery rate increased from 30% ~ 40% to 72.32%, with a depletion rate of 7.89%. First, the geological overview