Study on upper bound limit analysis of horizontal layers slope stability based on optimization method

Slope geological profile

The mine excavation slope is selected as engineering background, and the slope angle is 26°. The slope is composed of topsoil, sandstone and mudstone from top to bottom. Among them, the thickness of topsoil is 15 m, the density of topsoil is 13.1 kN/m3, the cohesion of topsoil is 40 kPa, the internal friction angle of topsoil is 14.7°. The thickness of sandstone is 24 m, the density of sandstone is 19.3 kN/m3, the cohesion of sandstone is 75 kPa, the internal friction angle of sandstone is 16.9°. The thickness of mudstone is 30 m, the density of mudstone is…

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