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- Title
SHALSTAB 模型在浙南林溪流域滑坡预测中的应用.
- Authors
孙强; 张泰丽; 伍剑波; 王赫生; 朱延辉; 韩帅
- Abstract
Landslides occurred frequently in the Linxi River basin of southern Zhejiang due to typhoon rainstorm. Shallow landslide stability model (SHALSTAB) is used to predict potential landslides according to the landslides characteristics of small scale and large ratio of length to thickness in this area. Log (rainfall q/soil hydraulic conductivity T) is used as the criterion of potential landslide. Quantitative index analysis shows that with the increase of log(q/T) level, the area of landslides predicted by the model expanded gradually, but the model also increased the misjudgment rate. The model has better prediction effect when log(q/T) = -- 3・ 1 is applied as criterion to predict landslide. The capture rate of landslides prediction is 62. 50%, the misjudgment rate is 17・ 79%. The simulation results show that bottom of the hillslope, side of the deep valley and the steep hillslope are the landslide-prone regions. Top of the mountain, and the region with shallow soil mass and flat topography have good stability.
- Publication
East China Geology / Huadong dizhi, 2021, Vol 42, Issue 4, p383
- ISSN
2096-1871
- Publication type
Article
- DOI
10.16788/j.hddz.32-1865/P.2021.04.003