| Citation: | BIAN Hongguang, WANG Shun, MA Haishan, XIN Peng. Stability of soil-rock mixture slopes based on random field theory[J]. Bulletin of Geological Science and Technology, 2024, 43(6): 162-170. doi: 10.19509/j.cnki.dzkq.tb20240183
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The extensive distribution and complex material composition of soil-rock mixture slopes in China have attracted significant attention from scholars.
This study aims to scientifically and rationally assess the impact of the spatial variability of soil parameters on the stability of soil-rock mixture slopes.
Based on the random field theory, the effective shear strength parameters cohesion
The results reveal that the stability safety factor of soil-rock mixture slopes follows a normal distribution. As the block stone content increases, the mean value of the stability safety factor rises from 1.005 to 1.095, reflecting a transition from shallow to deep failure. For block stone content of 35%, the stability safety factor reaches 1.334 for larger block stones and 1.064 for smaller ones. Compared to deterministic calculation results, incorporating the spatial variability of the soil parameters yields higher stability safety factor.
Therefore, in soil-rock mixture slope stability analyses, the spatial variability of effective shear strength parameters must be fully considered to prevent overly conservative designs.
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