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中文摘要：
金川二矿区充填体的稳定性一直是从事金川镍矿岩石力学研究诸多科研人员长期关注的一个问题。本文通过数值模拟方法分析了金川二矿区进路顶板失稳破坏的可能形式。针对金川二矿区下向进路充填法开采，提出了两种提高进路顶板稳定性的改进方案。此外，还对很多学者关心的金川二矿区充填体的整体稳定性问题进行了思考，给出了其不存在整体失稳可能性的观点。
英文摘要：
The stability of the backfill of NO. 2 mine lot of Jinchuan nickel ore is a problem that has long been concerned by many scientific researchers of rock mechanics of Jinchuan nickel ore. The possible failure style of access roof of NO. 2 mine lot is analysed by numerical simulation. Two improved proposals are proposed for guaranteeing the stability of access roof aiming at underhand drift cut-and-fill stoping for NO. 2 mine lot of Jinchuan. Besides, the author also propose a viewpoint about the stability of the whole backfill of NO. 2 mine lot of Jinchuan nickel ore, which always concerned by many researchers, that it has no risk to fail.
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