单体滑坡人口易损性定量评价方法探讨

A study of quantitative assessment method of population vulnerability of a single landslide

目前单体滑坡人口易损性评价仍有较多问题存在,制约了其定量化程度。为此,文章从滑坡导致人口易损性产生的原因出发,提出了一种单体滑坡人口易损性评价方法,该方法认为人口易损性的大小与滑坡滑速大小直接相关,滑速越大,人口易损性越大,反之越小。通过研究,验证了该方法能正确反映滑坡滑速越大、人口易损性越大这一关系,从而为单体滑坡人口易损性定量评价提供了新的途径。

Population vulnerability assessment of single landslide is qualitative evaluation.In the paper,according to the reasons of landslide-induced population loss,the quantitative assessment method of population vulnerability is proposed through determining high-speed landslide.It is found that the greater population vulnerability is related to the high-speed landslide and the smaller population vulnerability is retaled to the middle-low speed landslide.By examining the necessary conditions of high-speed landslide,it is found that landslide energy is the key factor and it is analyzed by analytic hierarchy process.The relationship between population vulnerability and landslide high-speed sliding is established and the case of the Qianjiangping landslide confirms the feasibility of the method.