基于改进组合赋权物元可拓模型的泥石流危险性评价

发布时间：2018-06-18 18:53

  本文选题：泥石流 + 危险性评价　； 参考：《南水北调与水利科技》2017年05期

【摘要】：针对泥石流危险性评价中权重和危险度,基于改进的组合赋权物元可拓评价模型,提出确定权重的优化算法。首先,根据文献分析泥石流危险度的分级标准,建立危险度评价指标,然后结合可拓物元评价理论,针对可拓法各指标权重确定的问题,将层次分析法计算得到的主观权重结合投影寻踪法所得到的客观权重通过距离函数进行耦合,从而获取各指标最终的综合权重,结合投影寻踪法优化蝙蝠算法进行求解,形成泥石流评价的组合赋权物元可拓模型。最后,借助Mat lab语言,调用内嵌工具箱和相应数学函数,编制程序得以实现。结合已有工程实例验证表明:危险性评价与实际工程相符合,评价结果相对合理,具有一定的工程应用价值。
[Abstract]:Aiming at the weight and risk degree of debris flow risk assessment, an optimization algorithm for determining the weight of debris flow is proposed based on the improved combinatorial weight matter-element extension evaluation model. First of all, according to the literature analysis of debris flow hazard classification standard, the risk evaluation index is established, and then combined with extension matter element evaluation theory, aiming at the extension method of the weight of each index to determine the problem, The subjective weight obtained by AHP combined with objective weight obtained by projection pursuit method is coupled by distance function to obtain the final comprehensive weight of each index, and the bat algorithm is optimized by projection pursuit method to solve the problem. Forming a combined weighted matter-element extension model for debris flow evaluation. Finally, with the help of Mat lab language, the embedded toolbox and the corresponding mathematical functions are called, and the program is realized. Combined with the existing engineering examples, it is shown that the risk assessment is in accordance with the actual project, the evaluation result is relatively reasonable, and it has certain engineering application value.
【作者单位】： 重庆三峡学院土木工程学院;长江水利委员会长江科学院;成都理工大学环境与土木工程学院;
【基金】：国家自然科学基金面上项目(51279219) 长江科学院开放研究基金资助项目(CKWV2016393/KY) 重庆市教委科学技术研究项目(KJ1601005) 重庆三峡学院校级重大培育项目(15ZP04);重庆三峡学院三峡库区工程结构防灾减灾与安全科研创新团队~~
【分类号】：P642.23
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本文编号：2036522