Stability Evaluation of Sand-sliding Slope Around Lhasa City Based on AHP-Fuzzy Comprehensive Evaluation Method
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S288

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    Abstract:

    [Objective] As a kind of slope disaster, the threat degree of sand-sliding slope has been increasing in recent years due to the influence of human activities. The stability of the sand-sliding slope around Lhasa City was studied in order to provide bases for the early warning and treatment of the sand-sliding slope.[Methods] By selecting the relatively typical sand-sliding disaster around Lhasa City, the paper analyzed the influence of ten factors, such as slope height, rock mass structure and annual average rainfall, on the stability of the sand-sliding slope by using analytic hierarchy process and fuzzy comprehensive evaluation.[Results] The sand-sliding slope formed by weathering-dominated rock mass was relatively high in risk level, and the whole was scattered and sandy, which was easy to spread. The sand-sliding slope formed by landslides along the road was generally low in risk level, with large debris particles and steep slope potential.[Conclusion] At present, the development trend of the unstable sand-sliding slope disaster in the area around Lhasa City is not optimistic, which should be paid more attention for relevant administrative agencies. The evaluation method in this paper is reliable, which can accurately and rapidly evaluate the stability of sand-sliding slope.

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刘宁波,田荣燕,王海波,薛现凯,顾学颖.基于AHP-模糊综合评价方法的拉萨市周边溜砂坡稳定性评价[J].水土保持通报英文版,2019,39(2):161-166,171

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History
  • Received:October 03,2018
  • Revised:November 05,2018
  • Adopted:
  • Online: May 10,2019
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