金川镍矿的大面积开采稳定性分析与对策

STABILITY ANALYSIS OF LARGE AREA MINING AND THE COUNTERMEASURES IN JINCHUAN NICKEL MINES

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。全面积的３～５万平方米的矿体的连续、大面积应用下向胶结充填采矿法开采，取得了很大的成功。作者在总结经验的基础上，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具体意见。

With mining practice and scientific research of twenty years,great achievements in the application of the under cut-and-fill method for continuous mining in a largeexposure area of 30000-50000m￣2 have been made in Jinchuan Nickel mines. In this paper,some valuable opinions for stability analysis of the ore pillar design,extraction sequence and multilevel mining in the large exposure area of second stage miningare presented on the basis of summarization of the experience by the author.