现代矿业
現代礦業
현대광업
MODERN MINING
2015年
5期
9-10,13
,共3页
人工组合点柱%稳定性计算%矿柱回收%房柱法
人工組閤點柱%穩定性計算%礦柱迴收%房柱法
인공조합점주%은정성계산%광주회수%방주법
Artificial combination point pillar%Stability calculation%Pillar recovery%Room-and-pil-lar method
房柱法回采矿房，遗留了大量点柱和间柱，约占矿房总矿量的30％。矿房回采后，为了维持采空区的稳定，通常只能回收一小部分矿柱，造成矿石的大量浪费。为此，提出采用“圆木＋混凝土”组合形式的人工点柱代替矿柱支撑采空区，设计了3种人工点柱组合形式，对其受力、安全性和经济性进行了计算分析，通过在新城金矿残留矿柱回采中的应用，矿柱回采率达到85％以上，且能够有效保障采场的作业安全。
房柱法迴採礦房，遺留瞭大量點柱和間柱，約佔礦房總礦量的30％。礦房迴採後，為瞭維持採空區的穩定，通常隻能迴收一小部分礦柱，造成礦石的大量浪費。為此，提齣採用“圓木＋混凝土”組閤形式的人工點柱代替礦柱支撐採空區，設計瞭3種人工點柱組閤形式，對其受力、安全性和經濟性進行瞭計算分析，通過在新城金礦殘留礦柱迴採中的應用，礦柱迴採率達到85％以上，且能夠有效保障採場的作業安全。
방주법회채광방，유류료대량점주화간주，약점광방총광량적30％。광방회채후，위료유지채공구적은정，통상지능회수일소부분광주，조성광석적대량낭비。위차，제출채용“원목＋혼응토”조합형식적인공점주대체광주지탱채공구，설계료3충인공점주조합형식，대기수력、안전성화경제성진행료계산분석，통과재신성금광잔류광주회채중적응용，광주회채솔체도85％이상，차능구유효보장채장적작업안전。
The large number of point pillars are left behind by using the room-and-pillar mining method,the point pillars are 30% of the total amount of ore in the mine.In order to maintain the stability of goaf area,only a small part of the point pillars are recovered to result in a substantial waste of ore.For this case,the ore pillars are replaced with the artificial point pillars with the combination forms of "logs+concrete"to support the goaf area.Three kinds of artificial points pillars combinations are designed, The stress,safety and economy of the artificial points pillars combinations are computed and analyzed. The above method is applied to mining the residual pillars in Xincheng gold mine.The application results show that,the pillars recovery rate is over 85%,therefore,the stope operation safety is guaranteed.
