弓长岭铁矿无底柱分段崩落法沿脉进路断面参数研究.pdfVIP

弓长岭铁矿无底柱分段崩落法沿脉进路 断面参数研究 肖福坤 孙豁然 　赵德孝 韩文成 　郭友学 (黑龙江科技学院·鸡西 158100) 　( 东北大学·沈阳 110006) 　( 弓长岭矿业公司·辽阳 111007) 　　摘 　要 　弓长岭井下铁矿部分矿体厚度小、矿体倾角大、下盘不稳仅可布置一条进路, 不能形成菱 形布置 , 且进路不能紧靠下盘 , 从而造成放矿过程中废石混入、矿石提前贫化、回收率低。针对这一具 体条件分别进行了放矿的理论分析、物理模拟、计算机仿真和现场工业实验等研究 , 认为在该种条件下 加大出矿进路断面可以有效地提高总矿石回收率。 关键词 　出矿进路 　断面 　模拟 中图分类号 　TD85331 　　文献标识码 　B 　　文章编号 　1004 - 4051 (2004) 01 - 0061 - 03 STUDY ON CROSSSECTION PARAMETER OF SUBL EVEL CAVING WITHOUT FLOOR PILLAR D RIFT IN GONGCHANGL ING IRON MINE Xiao Fukun ( Heilongjian g Institute of Science and Technology ·Jixi 158100) Sun Huoran 　Zhao Dexiao (Northeastern University ·Shenyang 110006) Han Wencheng 　Guo Youxue ( Gongchangling Mining Company ·Liaoyang 111007) 　　Abstract : Based on the Gongchangling underground iron mine whose part of orebody has the characteristic of thin thickness , large slop angle , bad bottom wall , only one drift which cant form the lozenge disposition , and drift cant approach bottom wall. thus , all of these lead to increase the waste rock rate and reduce ore recovery rate , and at the same time lead to ore depletion ahead of being extracted. In this paper , drawing theory , physical simulation and computer simulation and industrial experiment are be used on studying drawing ore , and drawing a conclusion that ore recovery rate can be inc