Simulation study of destabilization mechanism of water barrier controlled slopes
ZHAO Mengling
WANG Dan
SHANG Guo'an
XING Kebing
XIAO Jianxiong
LI Yuanhao
Abstract：In order to investigate the damage mechanism of the water barrier formed by mudstone on the north slope of Xianfeng Open-pit Coal Mine after the rainy season in the process of groundwater dynamics,the article establishes a slope mechanics model based on the research method of combining numbers and shapes,and deduces the damage theory of the mudstone water barrier under the action of water pressure,and carries out coupled simulation based on the real rainfall in Kunming City in 2023.The results show that after the rainy season,with the rainfall infiltration is blocked,the mudstone upper water accumulation leads to the increase of water pressure,the first plastic damage occurs,from the water insulation layer to the water conduction layer.However,the slope doesnot occur a large displacement and deformation,and still maintains a stable state.After entering into the month of January,the groundwater level continues to rise,the upper water pressure of the mudstone water insulation layer reaches the limiting value,and the plastic damage occurs,resulting in the conductivity of the water,and then occur in a large range of plastic deformation,the north slope occurs landslide disaster with mudstone as the sliding surface.
Keywords：open-pit mine slopewater barrierfluid-structure interactionFLAC3Dnumerical simulation
Publication Date：2025-04-30
Online Publishing Date：2026-01-31(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )