凡口铅锌矿深部首采地段开采技术条件分析

Technical Condition Analysis of Deep Primary Mining Area in Fankou Lead-zinc Mine

狮岭深部首采地段的生产探矿工作已基本结束,探获B+C级铅锌矿石量250多万t,单一黄铁矿39万t,为矿山的持续稳产高产提供了资源保证。但该地段矿体位于F3断层下盘,围岩稳固性较差、矿石品位较低、矿体过于集中等不利因素制约着今后的生产规模,针对此种情况提出了建议。

The production prospecting of deep primary mining area in Shiling has almost been finished. Over 2.5million tons B-rank and C-rank lead-zinc ore and 390 thousand tons pyrite have been proved,which provide s resource assurance for mine development. Because these orebodies are under F3 fault, surrounding rock is unstable,ore grade is lows, and orebodies are too con centrative. These factors conditioned product at appropriate scale in the future . According to these factors, some suggestions are put forward.