摘要
龙门山铜矿东部采区为分段空场嗣后充填法,现部分采场已回采完毕,形成大片采空区。为经济高效地开采龙门山铜矿东部采空区周围矿体,避免大规模塌陷事故,以东部采区未开采的E3北、E4采场为研究对象,建立矿体三维模型,对5种充填回采方案进行数值模拟研究,从安全角度对各方案进行优劣排序。结果表明,将现有采空区全部胶结充填的方案安全性最高,但成本也最高;暂不处理现有采空区,在采场内留设矿柱及回采后部分充填的方案安全系数较高,且回采成本稍低。
The eastern mining area of Longmenshan Copper Mine adopts the method of subsection goaf and subsequent filling.Now some stopes have been mined,forming a large goaf.In order to economi⁃cally and efficiently mine the ore bodies around the eastern goaf of Longmenshan Copper Mine and avoid large-scale collapse accidents,the three-dimensional model of the ore body was established by taking the unmined E3 north and E4 stopes in the eastern mining area as the research object.The numerical simula⁃tion of five filling mining schemes was carried out,and the advantages and disadvantages of each scheme were ranked from the perspective of safety.The results show that the scheme of cemented filling all the ex⁃isting goafs is the most safe,but the cost is also the highest.Without dealing with the existing goaf,the safety factor of the scheme of retaining pillars in the stope and partially filling after mining is higher,and the mining cost is slightly lower.
作者
高兴红
操帅
李同鹏
GAO Xinghong;CAO Shuai;LI Tongpeng(Lu'an City Safety Production Supervision Detachment;Sinosteel Maanshan General Institute of Min-ing Research Co.,Ltd.;State Key Laboratory of Metal Mine Safety and Health)
出处
《现代矿业》
CAS
2022年第10期73-76,共4页
Modern Mining
关键词
采空区
开采方案
数值模拟
goaf
mining scheme
numerical simulation
