相邻露天矿边帮压煤协调开采技术

为了解决相邻露天矿独立开采时存在的边帮压煤与边坡安全问题,通过理论计算与分析,提出相邻露天矿边帮压煤协调开采技术。分析实施该技术的条件与基础,给出边帮压煤剥采比的概念及计算方法;研究相邻露天矿采剥工程位置的协调衔接,排土空间的合理分配与利用,开拓运输系统的优化布置等关键技术内容。在国电蒙东公司旗下的2个露天煤矿进行了实践,结果表明:此技术能够使相邻露天矿边帮压煤得到安全、经济地回采,有效提高煤炭资源采出率,实现经济效益最大化。

Coordination mining technology for coal underlying the slopes-between two adjacent open pits

To solve the problems associated with extracting coal underlying the slope between two adjacent open pits and its safety，authors proposed a coordination mining technology to extract the coal underlying the slope between two adjacent open pits by using theoretical calculation and analysis.Authors analyzed the implementation conditions and the bases of the technology，provided a conception and calculation method of stripping ratio of coal underlying the slope，and investigated key techniques such as smooth connecting of mining and stripping engineering positions，reasonable utilization and distribution of dumping space，optimal location of in-pit haulage system development.The technology was applied in two coal open pits of Guodian Mengdong Energy Holdings Co.，Ltd.The results show that the technology makes coal underlying the slope between two adjacent open pits be mined economically and safely，enhances the recovery rate of coal resources，eventually maximizes the economic benefits of two adjacent open pits.