摘要
谦比希铜矿深部矿体采用大直径深孔分段空场嗣后废石充填法开采,存在凿岩巷道稳定性差、上盘垮冒严重等问题,导致采场回采效率低、安全性差,制约矿山生产能力,同时上部采用嗣后分级尾砂充填,隔离保安矿柱仅厚21 m。为保证深部嗣后采场的安全回采,选用FLAC3D对保安矿柱的稳定性进行分析研究。结果表明,在当前条件下,21 m保安矿柱能有效隔离上下采区,防止上部充填尾砂涌入下部采场,保证采场作业安全。
The large diameter deep hole sublevel open stoping with subsequent backfilling with barren rocks is used in Chambishi copper mine,the stability of drilling tunnels is poor,and catastrophic collapse of hanging side is serious. Therfore,the efficiency of stope mining is low,the safety of the stope mining is poor,the mine production capacity is restricted. Besides that,subsequent grading backfilling filling is used to deal with the upper orebody,the thickness of the safety pillar is 21 m. In order to ensure safety mining of the deep subsequent stope,the FLAC3 Dsoftware is adopted to analyze the stability of safety pillar. The research results show that,under the current conditions,the safety pillar with the thickness of 21 m can isolate the mining area effectively and prevent the upper filling backfilling into lower stope so as to ensure safety mining.
出处
《现代矿业》
CAS
2015年第2期104-107,共4页
Modern Mining
基金
国家"十二五"科技支撑计划课题(编号:2012BAB08B02)
新世纪优秀人才支持计划资助(编号:NCET-13-0669)
国家自然科学基金项目(编号:51374035)
高等学校博士学科点基金(编号:2011000612002)
关键词
大直径深孔
空场嗣后充填
保安矿柱
分级尾砂
Large diameter deep hole
Open stoping with subsequent backfilling
Safety pillar
Grading backfilling
作者简介
张兵（1968-），男，高级工程师，硕士研究生，100083北京市朝阳区安定路10号。
