某上游法尾矿坝抗滑稳定性浅析

通过某上游法尾矿坝抗滑稳定性分析,对比分析了坝体加高、浸润线条件、排渗系统运行状况和透镜体简化对尾矿坝抗滑稳定性的影响。结果表明该尾矿坝抗滑稳定性随坝体加高而降低;排渗系统运行状况对尾矿坝抗滑稳定性的影响超过坝体加高对尾矿坝抗滑稳定性的影响;根据一定简化原则减少透镜体,从而简化剖面形状和计算复杂程度,是一种能反映工程实际但比较保守的分析方法。拟静力法并非适合于所有的尾矿堆积坝抗震稳定性分析,即便采用其所得结果也可能会出现较大偏差。

Opinions on the gangue-dam anti-slide stability analysis

The results of anti-sliding stability analyses on an upstream gangue-dam have been used in this present paper to make simultaneous analyses on the effects of heitening the dam saturation line condition, operation state of drainage system and reduced lens on the anti-sliding stability of the gangue dam. The results have shown that the anti-sliding stability becomes poor as the dam height increases and the effect that the operation state of the draining system makes on the dams stability is higher than that of heightening the dam. The transaction shape and the complexity degree in calculation can be simplifield if the lens are reduced in the light of a certain simplification principle, which is an analyzing method to reflect the engineering practice although it is some what conservative. Not all kinds of gangue dams can use the pseudo-static method to analyse their seismic stability or great departure may result.