基于熵值法和突变级数法的泥石流易损度评价

泥石流易损度（危害性）评价是泥石流风险评估的重要组成部分.结合熵值法和突变理论的泥石流易损度评价方法，采用客观的熵值法判断指标间相对重要程度，利用突变级数法计算突变级数值进行评价，方法理论基础牢固且避免了确定指标权重值的弊端.以吉林省和龙市地质灾害调查与区划中的10条泥石流易损度评价实例进行验证，结果表明：数据获取、标准化和评价过程简便，易损度等级以轻度和中度为主的评价结果符合实际情况，该方法经过完善指标体系后可更加合理地应用于实际工作中.因此，基于熵值法和突变理论的泥石流易损度评价方法是可行的、可靠的.

VULNERABILITY ASSESSMENT OF DEBRIS FLOW BASED ON ENTROPY VALUE AND CATASTROPHE PROGRESSION METHODS

Vulnerability(harmfulness) is an important part of debris flow risk assessment. Two methods are combined for the vulnerability assessment. The objective entropy value method is adopted to judge the relative importance of indexes; while the catastrophe progression to calculate its value. The well-grounded method theory can avoid the disadvantages of determining index weight value. Taking the vulnerability assessment examples of 10 debris flows in the geohazard surveying and zoning in Helong City, Jilin Province, for verification, the results show that the process of data acquisition, standardization and assessment is simple, and the mild and moderate-dominated vulnerability grades are consistent with the actual situation. The method can be more reasonably applied to practical work after improving the index system. Therefore, the combination of entropy value method and catastrophe theory is feasible and reliable for debris flow vulnerability assessment.