摘要
针对湖南某铅锌矿深部矿体的赋存条件,提出采用浅孔留矿嗣后充填法(占比7.5%)、机械化上向水平分层充填法(占比72.4%)和房柱采矿嗣后充填法(占比20.1%)对矿体进行回收。同时基于ANSYS数值模拟软件,建立矿房-矿柱-围岩-充填体耦合作用模型,分析论证留设矿柱时回采的安全稳定性。结果表明:采用机械化上向水平分层充填法时,留设厚度为6 m的顶柱与间柱,能满足回采安全需求。为深部相似矿体的安全高效回收提供了一定可借鉴经验。
In view of the occurrence conditions of the deep orebody in a lead-zinc mine in Hunan Province,it is proposed to use the shallow hole shrinkage subsequent filling method(7.5%),mechanized upward horizontal slicing and filling method(72.4%)and room and pillar mining subsequent filling method(20.1%)to recover the orebody.At the same time,based on the ANSYS numerical simulation software,a coupling model of ore room-pillar-rock-surrounding-filling body is established to analyze and demonstrate the safety and stability of mining with pillars.The results show that when mechanized upward horizontal slicing and filling method is adopted,the top pillar and interval pillar with a thickness of 6 m can meet the safety requirements of mining.It provides certain reference experience for safe and efficient recovery of deep similar ore bodies.
作者
米智华
MI Zhihua(Hunan Nonferrous Industry Investment Group Co.,Ltd.,Changsha 410100,China)
出处
《湖南有色金属》
CAS
2023年第2期9-13,共5页
Hunan Nonferrous Metals
关键词
深部矿体
机械化上向水平分层充填法
数值模拟
矿柱留设厚度
deep ore body
mechanized upward horizontal layered filling method
numerical simulation
reserved thickness of ore pillar
