Stability Analysis of the Inclined Capillary Barrier Covers under Rainfall Condition

Capillary barrier covers consist of fine-grained soil layer overlying coarse-grained layer, which are widely used as surface for mine tailings, solid waste landfills, and low-level radioactive repositories. On one hand, the capillary can effectively prevent rainfall water infiltrating into toxic hazardous materials below. other infiltrated stores diverts in leading to a reduction stability covers. In this study, analysis method was established based on Green-Ampt model Janbu method. Firstly, infiltration process analyzed divided four stages. The variation wetting front profile during infiltration, caused by effect, depicted law mass conservation. Next, is assumed be potential sliding surface. As goes on, different stages through limit equilibrium Both redistribution influence seepage force were considered proposed Finally, using examples published articles, availability superiority verified.