充填开采安全深度与保安矿柱圈定研究
投稿时间:2018-01-31  修订日期:2018-11-09  点此下载全文
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池秀文 武汉理工大学资源与环境工程学院
矿物资源加工与环境湖北省重点实验室 
245031534@qq.com 
吕占胜 武汉理工大学资源与环境工程学院
矿物资源加工与环境湖北省重点实验室 
 
张文举 武汉理工大学资源与环境工程学院
矿物资源加工与环境湖北省重点实验室 
 
张聪瑞 武汉理工大学资源与环境工程学院
矿物资源加工与环境湖北省重点实验室 
230352716@qq.com 
基金项目:中央高校基本科研业务费资助(编号:185208012)
中文摘要:地下矿山深度充填开采过程中,保安矿柱的留设不可避免,传统的保安矿柱圈定方法问题明显,以安全深度结合岩移角圈定保安矿柱的方法被认为是可行的,但安全深度的计算方法尚不明确。以三鑫金铜矿桃花嘴矿区为工程背景,采用理论计算、有限元数值模拟方法来研究安全深度,进而圈定保安矿柱。结果表明:通过理论计算,得到临界安全深度为-428.9m,运用有限元数值模拟软件FLAC3D对开采过程中顶板下沉量与塑性区分布、井筒位移与应力变化情况进行模拟,进一步确定了安全深度为-442m。基于安全深度理论对保安矿柱重新进行圈定,与传统方法相比,释放了大量压矿量,提高了矿产资源利用率。
中文关键词:安全深度  保安矿柱  数值模拟  顶板  井筒
 
Study on the safety depth of filling and mining and the demarcation of security mine
Abstract:During the process of deep filling mining in underground mines, the retention of security pillars is inevitable. The traditional method of delineation of security pillars is obvious. It is considered feasible to demarcate the security pillars with safe depth and rock migration angle. However, Calculation method is not clear. With the project of Sanxin gold and copper mine Taohuazui mining area as the engineering background, the safety depth is studied by theoretical calculation and finite element numerical simulation method, and then the security pillars are delineated. The results show that the critical depth of safety is -428.9m by theoretical calculation. The numerical simulation software FLAC3D is used to simulate the displacement and stress distribution of roof during the mining process. It is further confirmed that the safety depth is -442m. Based on the theory of safety depth, the pillar of security is newly delineated. Compared with the traditional method, a large amount of ore is released and the utilization rate of mineral resources is increased.
keywords:depth of safety  security pillar  numerical simulation  roof  wellbore
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