Analysis of Formation Mechanism of Slightly Inclined Bedding Mudstone Landslide in Coal Mining Subsidence Area Based on Finite–Discrete Element Method

In this paper, the formation mechanism of a slightly inclined bedding mudstone landslide in overlying mountain coal mining subsidence area Tanshan Coal Mine Ningxia, China, is studied. By means geotechnical investigation, indoor tests, theoretical analysis and other technical means, we find geological environment background study obtain physical mechanical property indexes Mine. combining numerical simulation discrete elements finite elements, macro deformation failure law displacement stress nephogram process are discussed. The results show that 850 m long from east to west, 500 wide north south 10,875,000 m3 volume. It composed Jurassic traction caused by area. affected internal factors inducing factors. mainly types engineering properties, activities rainfall. analyzing summarizing calculation slope model prior 2D-Block GeoStudio software, sliding divided into four stages: creep, deformation, movement accumulation. software used calculate stability under natural rainfall conditions. stable state conditions basically comparing limit equilibrium method element method, calculated coefficient more accurate when appropriate constitutive selected. research have important reference significance for prevention control gently Loess Plateau.