基于Geo-Slope的拜耳法干式赤泥堆场稳定性分析

针对拜耳法工艺生产赤泥的特点，分析了平果铝赤泥堆场的特征以及堆场内赤泥的物理力学指标；结合干法排放、堆存赤泥所引起的堆场表面裂缝问题，阐述了裂缝产生的具体成因，并采用Geo-Slope软件中的SLOPE/W模块计算裂缝条件下赤泥堆积坝边坡稳定性，结果表明，裂缝的存在使赤泥坝静力安全系数降低0.5%左右，赤泥坝在当前堆积到二级子坝正常工况下是稳定的。

Geo-Slope-based Analysis for the Dump Stability of Dry Red Mud from Bayer Process

In light of the features of red mud from Bayer process, the characteristics of Pingguolu red mud dump and the physical and mechanical properties of the red mud in the dump are analyzed.The causes for the cracks in the surface of the dump stacked by red mud dry discharge are elaborated and the stability of red mud dump slope with crack existence is calculated by using the SLOP/W module in Geo-Slope software.The result indicates that the existence of cracks can reduce the static safety coefficient of the red mud dam by about 0.5% and the red mud dump which has been stacked to the secondary sub-dam is stable at normal operation conditions.