摘要
呷村银多金属矿为多层急倾斜薄至中厚矿体,在开采过程中,下盘银铜铅锌矿体和上盘独立铅锌矿体下降速度不平衡、后因地表塌陷采用露天开采回收上部矿柱矿量。目前矿山存在采场垮塌严重、损失贫化大、积压三柱矿量大、空区未处理、安全隐患大等问题。为解决以上问题,结合充填系统的建设、矿体特征以及现场情况开展了采矿方法优化、三柱回收及采空区处理方案研究。通过研究选择合理的矿柱回收方法和空区处理方案,降低矿柱回收贫化、损失等技术经济指标,及时处理采空区、调整矿山开采顺序以降低矿山生产安全风险。
The Gacun silver polymetallic deposit is a multilayer steeply inclined orebody of which thickness is thin to medium.During the mining process,the descent velocity of the footwall Ag-Cu-Pb-Zn ore bodies and that independent Pb-Zn ore bodies in the upper plate is not balanced.Soon after that,due to the surface subsidence,open pit mining method is adopted for the recovery of upper pillar.At present,there are many problems in the mine,such as serious collapse of stope,large loss and dilution,large backlog of three columns of ore,empty area is not handled,safety hidden trouble and so on.To solve these above problems,combining with the construction of filling system,orebody characteristics and site conditions,the optimization of mining method is carried out,the recovery of three columns and the treatment of mined out area is also studied.Through this research,the reasonable pillar recovery method and the empty area treatment scheme are selected,which can reduce the pillar recovery dilution and loss and other technical and economic indicators.Besides,timely treatment of mined out area and adjustment of mining sequence can reduce the safety risk of mine production.
出处
《有色金属（矿山部分）》
2017年第6期14-17,29,共5页
NONFERROUS METALS(Mining Section）
关键词
银多金属
采空区
矿柱
充填
回采方案
安全
silver polymetallic
mined-out area
filling
stoping scheme
security
