基于投影寻踪分类模型的河道堤防护坡方案优选

River Embankment Slope Schemes Optimization Based on Projection Pursuit Classification Model

河道堤防护坡是城市防洪与河道整治的重点内容。为寻找综合效益最优的河道堤防护坡方案,引入投影寻踪分类模型,建立包括基本功能、施工难度和工程进度、工程造价和工程耐久性、景观美学和环境协调性、政府支持力度与群众支持力度在内的指标体系。并将该模型与指标体系应用于工程实例,优选河道堤防护坡方案。结果表明,投影寻踪分类模型克服了使用主观权重造成的片面性,计算过程遵循原始数据规律,原理更为科学,在水利工程方案优选方面具备较广阔的应用前景和推广价值。模型计算发现,外秦淮河清凉门—定淮门桥段综合效益最优的护坡方案为铰接式连锁砖护坡,其次为植被型生态混凝土+栽植护坡。

River embankment slope is an important part of urban flood control and river regulation. To find out the slope protection scheme with optimal comprehensive benefits, projection pursuit classification model was introduced to set up an index system including basic function, construction difficulty, construction cost, project durability, landscape aesthetics, environmental harmony, etc. The model and the index system was applied in engineering examples to select the best slope protection scheme. Results showed that the projection pursuit classification model overcomes the one - sidedness of scheme selection caused by using subjective weights. As its calculation process follows the law of original data with more scientific principle, the model has relatively broad application prospects and popularization value in water conservancy engineering plan optimization. Model calculation showed that the best slope scheme with comprehensive benefits for the external Qinhuai river from Qingliang door to Dinghuai door is articulated chain brick revetment, followed by vegetation and eco - concrete ＋ planting slope.