深厚砂砾石坝基防渗帷幕方案优化  

Deep Sandy Gravel Dam Foundation Impervious Curtain Scheme Optimization

作　　者：郑伦鑫 燕乔[1] 张胜利 肖兵[1] 张利雷[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2015年第3期44-47,共4页Journal of China Three Gorges University：Natural Sciences

摘　　要：以深厚砂砾石基岩上的某沥青混泥土心墙坝为例,采用有限元和复合型优化算法对坝基墙接幕体系中的防渗帷幕灌浆参数组合进行优化研究.根据建立的数值模型,用有限元数值方法计算渗流场,以计算得出的帷幕渗流量、幕体本身的最大水力坡降不超过允许值为约束条件,以帷幕的工程造价为目标函数建立优化模型,得出一般情况下的帷幕厚度与灌浆材料的最优组合,从而为坝基防渗优化设计提供参考.Taking the asphalt concrete core wall dam on deep sand stone bedrock for example,using finite element compound system of optimization algorithm,for dam foundation wall,the impervious curtain grouting parameters optimal combinations are researched.According to the established numerical model,the finite element numerical method is used to calculate the seepage field.And then the calculated seepage flow of the curtain,the maximum hydraulic gradient of curtain body itself does not exceed the allowable value as constraint conditions,with the project cost of curtain as the objective function,an optimization model is established.Finally,it is obtained that in general the optimal combination of curtain grouting material and its thickness,so as to provide a reference for the dam foundation seepage control optimization design.

关 键 词：砂砾石 防渗帷幕 有限元法 复合型算法 优化设计 

分 类 号：TV223.43[水利工程—水工结构工程]