摘要
内蒙古某铁矿受采矿权平面范围限制,圈定的终了境界最低开采标高为1500 m,露天残留矿体和深部矿体需要转入地下开采方式回收。提出无底柱分段崩落采矿法和分段充填采矿法2种适合矿山开采技术条件的采矿方法,通过对矿山生产能力、设计利用矿量、投资成本、销售收入和国家产业政策等几个方面进行对比分析,最终选定了保安矿柱压矿量少、矿石回采率高、排土场及尾矿库占地面积小、能避免地表塌陷的分段充填采矿法。对选择的采矿方法进行工艺设计,确定了采场结构参数和回采工艺。
An iron mine in Inner Mongolia is limited by the plane range of mining rights,and the minimum mining elevation of the final boundary is 1500 m.The open-pit residual ore body and deep ore body need to be transferred to underground mining.Two mining methods,non-pillar sublevel caving mining method and sublevel filling mining method,suitable for mining technical conditions are put forward.The mine production capacity,designed ore quantity,investment cost,sales revenue and national industrial policy are compared and analyzed.Finally,the sublevel filling mining method with less ore pressure,high ore recovery rate,small area of waste dump and tailings pond and avoiding surface collapse was selected.The process design of the selected mining method is carried out,and the stope structure parameters and mining technology are determined.
作者
许洪亮
张明峰
马二辉
樊洁
XU Hongliang;ZHANG Mingfeng;MA Erhui;FAN Jie(MCC Qinhuangdao Engineering Design and Research Institute Co.,Ltd.;Hebei Province Green In-telligent Mine Engineering Design Technology Innovation Center)
出处
《现代矿业》
CAS
2022年第8期73-76,共4页
Modern Mining
关键词
露天转地下开采
充填采矿法
回采工艺
open-pit to underground mining
fill mining method
recovery process
