首页|Slope stability of reclaimed coal mines through a new water filling index
Slope stability of reclaimed coal mines through a new water filling index
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
万方数据
维普
A common reclamation practice for closed coal surface mines is filling them with water to form pit lakes.The creation and sustainability of these lakes are significantly affected by the stability of the corre-sponding slopes.The present study provides a general framework for analyzing the water filling's effect on slope stability based on a new water filling index,which can indirectly consider the factors affecting the process and efficiently quantify the filling speed's influence.The assumptions of the proposed approach are thoroughly discussed,and the range of the water filling index is identified.Furthermore,the safety factor is calculated using the finite element method with the shear strength reduction tech-nique during the filling process for various conditions(soil properties,slope geometry,hydraulic con-ditions,and water filling speed).Results are presented as normalized stability charts for practical use.During the water filling,the stability gradually decreases until the reservoir reaches a critical level of 10％-40％of the total height;it then increases to even more stable conditions than the initial one.Overall,the present analysis allows for the preliminary stability evaluation of a coal mine during the formation of a pit lake and the appropriate quantification of the water filling's effect.
万方数据
维普
