金川镍矿的大面积开采稳定性分析与对策

On Stability and Countermeasures of Large area Mining in Jinchuan Nickle Mine

金川镍矿通过二十多年的生产实践与科研工作，在矿岩特别破碎、地压很大的条件下，全面积３～５万ｍ２的大面积矿体，连续应用下向胶结充填采矿法开采，取得了成功。作者对二期工作大面积开采范围的矿柱留设，开采顺序，多阶段开采问题，通过矿岩稳定性分析提出了具体意见。

Through twenty year practise and re-search ,the mining of downward cementing filling ina large area of 30～50 thousand m2,especially underextremely fragmnting and high pressure conditions,gain the success. The details of the suggestion wereputforward by stability analysis concerning the in-stallation of ore pillar,mining sequence and multiplestage mining。