长江科学院院报2019，Vol.36Issue(10)：45-48,58,5.DOI:10. 11988/ckyyb. 20190870
堤防管涌险情主要影响因素的敏感性分析
Sensitivity Analysis on Weights of Main Influence Factors of Piping Failure of Dyke
摘要
Abstract
In this paper a generalized double-layer foundation levee model is built to conduct sensitivity analysis on four major assessment indicators. These indicators include the water head difference between both sides of levee, the duration of warning water level, the thickness of less permeable layer, and the ratio of permeability of strongly permeable layer to that of less permeable layer. The objective weights of these four indicators influencing backward erosion piping are determined. Results indicate that the water head difference and the thickness of less permeable layer ( less than 2 m) are two important indicators with relatively large weights. Meanwhile, the objective weights of three indicators, namely, the duration of warning water level, the thickness of less permeable layer, and the ratio of permeability coefficient, vary in different ranges.关键词
堤防管涌/弱透水覆盖层/强透水覆盖层/渗透系数比值/权重敏感性/双层地基堤防/概化模型Key words
piping danger of levee/weakly permeable strata/strongly permeable layer/ratio of permeability coeffi-cient/sensitivity of weight/dyke with dual foundation layers/generalized model分类
建筑与水利引用本文复制引用
宁丹麦,罗玉龙,詹美礼,盛金昌..堤防管涌险情主要影响因素的敏感性分析[J].长江科学院院报,2019,36(10):45-48,58,5.基金项目
国家重点研发计划项目(2017YFC1502603) （2017YFC1502603）
