摘要
为了保障安庆铜矿产量的要求,加快矿山深部矿体的开采进度,对1^#矿体深部残矿的回采区域进行了工程调查与安全性评估。结合深部采场底部胶结充填体原位取芯,获得了采场充填强度的分布规律,进而提出了残矿回采布置方案。通过FLAC三维数值软件,对-618m水平以下新规划的采充时序进行模拟分析,从最大主应力云图可知,在残矿采场回采过程中下向揭露的胶结充填体能够保持稳定,表明不留设-618^-640m水平矿柱的回采方案安全可行。根据数值模拟结果,对残矿回采布置方案进一步优化,实现1^#深部残矿安全回采。
In order to guarantee the production requirements and speed up the mining progress of the deep ore body in the Anqing copper mine,the engineering investigation and safety evaluation of the deep residual area in 1~# ore body were carried out.Combined with the in-situ core of the cemented backfill at the bottom of the deep stope,the distribution law of filling strength of the stope was obtained,and the layout scheme of the residual ore was proposed.Through FLAC three-dimensional numerical software,the mining and filling sequence of the new plan below -618 mlevel was analyzed.From the maximum principal stress cloud map,the cemented backfill exposed in the mining process of the residual ore could maintain stability,which indicated that the mining scheme without -618^-640 mhorizontal pillar was safe and feasible.According to the results of numerical simulation,the mining layout of residual ore was further optimized to achieve safe mining of 1~# deep ore.
作者
罗皖东
LUO Wandong(Anqing Copper Mine,Tongling Nonferrous Metals Group Co.,Ltd.,Anqing Anhui 246100,China)
出处
《有色金属（矿山部分）》
2019年第4期47-51,共5页
NONFERROUS METALS(Mining Section）
关键词
深部残矿
充填采矿法
数值模拟
方案优化
deep residual ore
filling method
numerical simulation
scheme optimization
