Risk Analysis of Loess Shallow Landslides Under Different Rainfall Conditions
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    Abstract:

    [Objective] To analyze the risk analysis of loess shallow landslide under different rainfall conditions in order to provide an effective way for the loess shallow landslide hazard analysis and evaluation.[Methods] The paper took Tianshui City of Gansu Province as a case study and wrote a program to analyze the shallow landslide hazard according to SHALSTAB model under ArcGIS platform. Then the distribution of shallow loess landslide was predicted with consideration of different rainfall conditions.[Results] With the increase of rainfall, the shallow landslides increased significantly, and the proportion increased from 0.166% to 3.624% when the rainfall increased from 5 mm/d to 320 mm/d, increased by 20 times.[Conclusion] When the precipitation is low, shallow landslides area main distributed in rainfall concentrated area. When the precipitation increases, shallow landslides extend upward along the loess valley. The comparison with the actual landslide disasters showed that the calculation results are accurate and reliable.

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同霄,彭建兵,朱兴华,马鹏辉,孟振江.降雨作用下黄土浅层滑坡的危险性分析[J].水土保持通报英文版,2016,36(3):109-113

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History
  • Received:September 08,2015
  • Revised:November 23,2015
  • Online: July 12,2016