基于FIFC的稀土矿水位滑坡预警模型

An Early Warning Model for the Water Level of Ion-adsorption Rare Earth Ore Based on Failure Index Fragility Curves

稀土原地浸矿需要不断向边坡内注入浸矿液,导致边坡土体水位上升而引起滑坡。针对该问题,首先用有效应力解释了水位上升对边坡稳定性的影响;然后以水位为必选因素,并从坡角、粘聚力、内摩擦角中用三因素三水平敏感性分析选择两个主要因素,建立了基于FIFC的三因素稀土矿滑坡预警模型。结果表明,浸矿期间可将边坡水位与相应图表比对确定稀土矿边坡的预警等级,利用预警模型结合边坡水位在线监测,可实现稀土矿原地浸矿滑坡自动预警。

In-situ leaching of rare earths requires the continuous infusion of leaching fluid into the slope,resulting in the slope soil water level rising and causing landslides.To solve this problem,the effect of water level rise on slope stability is explained firstly by principle of effective stress.Then the water level is taken as the necessary factor,and further two main factors from slope angle/cohesive/internal friction angle are chosen by using three factor three level sensitivity analysis.Finally the early warning model of the three-factor rare earth ore based on FIFC is set up.The results show that by comparing the water level with the corresponding chart,the rare earth slope warning level can be determined.And the model combined with the water online monitoring can realize the automatic warning of landslide during in-situ leaching of rare earth ore.