昆阳磷矿自1965年建矿至今,已有二十多年的开采历史,设计能力为160万吨/年。全矿共分四个采区,目前一、二采区生产,一采区为70万吨,二采区为90万吨。1984年创历史最好水平,产量达到了原设计能力。虽然如此,但多年来采用过的采矿方法,都不能适应生产技术发展的要求,如:“分片分段,低台阶下降,沿倾向 Since its establishment in 1965, Kunyang Phosphate Mine has more than 20 years of mining history and a designed capacity of 1.6 million tons / year. The whole mine is divided into four mining areas, the current production of one or two mining areas, a mining area of ​​700,000 tons, two mining area of ​​900,000 tons. In 1984 the best record level, the output reached the original design capability. However, the mining methods adopted over the years can not meet the requirements of the development of production technology, such as: "fragmentation, low-level decline, along the trend