基于改进突变理论的滑坡稳定性分级判别

武鑫1 赵浩然1 郑秀清1 陈军锋1 温晓艺1

(1.太原理工大学水利科学与工程学院, 山西太原 030000)
【知识点链接】顺向坡

【摘要】基于改进的突变理论,提出一种滑坡稳定性的综合判别方法。利用山西省交城县24个滑坡实地调查的基础资料,从孕灾环境、承灾体属性和诱灾因素3个方面,选取相对高差、岩土体类型、斜坡岩土体风化程度与裂隙发育特征、植被覆盖率、斜坡结构类型、坡面形态、斜坡坡度、后缘加载、前缘切坡、降雨量10个指标,建立了滑坡稳定性判别模型。采用突变理论、模糊数学、贡献率法相结合的方法确定了初始隶属度函数值,由归一公式逐层递归运算得到总突变级数,利用改进的突变理论方法对总突变级数进行转换,形成新的滑坡稳定性判别准则。将改进后的评判结果与实地调查结果进行对比分析,表明改进的判别方法精度较高,可为滑坡地质灾害的稳定性评价及其防治提供参考。

【关键词】 滑坡稳定性; 改进的突变理论; 判别方法; 诱灾因素; 模型;

【DOI】

【基金资助】 国家自然科学基金项目(41752221) National Natural Science Foundation of China(41752221) 山西省水文水资源勘测项目(ZNGZ2015-036) Shanxi Hydrology and Water Resources Survey Project(ZNGZ2015-036)

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This Article

ISSN:1004-4574

CN: 23-1324/X

Vol 28, No. 04, Pages 122-130

August 2019

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知识点

摘要

  • 1 基本理论和方法
  • 2 研究实例
  • 3 结语
  • 参考文献