土石坝工程台阶式消浪护坡技术研究  

Study of stepped wave breaking revetment technology for earth rock dam project

作　　者：董索 郑道宽 周招 DONG Suo;ZHENG Dao-kuan;ZHOU Zhao(Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430000,China)

机构地区：[1]长江勘测规划设计研究有限责任公司,武汉430000

出　　处：《广西水利水电》2021年第4期9-12,16,共5页Guangxi Water Resources & Hydropower Engineering

摘　　要：采用数值模拟方法计算土石坝工程台阶式护坡的波浪爬高,分析了台阶式护坡的结构参数、大坝上游坝坡坡度系数、波浪特性参数对台阶式护坡波浪爬高的影响。得出结论:台阶式护坡相比于光面混凝土护坡,平均波浪爬高可减少40%~50%;同一入射波下,坡度系数m相同时,平均波浪爬高及糙率及渗透性系数K△随相对台阶高度h/H的增加先减小后增加再减小;同一入射波下,相对台阶高度h/H相同时,平均波浪爬高随坡度系数m的增加总体呈减小趋势;糙率及渗透性系数K△随坡度系数m的增加呈波动状态。根据计算结果,总结土石坝工程常用坡度系数选用的台阶式护坡结构参数及计算参数。Numerical simulation method is used to calculate the wave run-up of stepped revetment of earth rock dam,and the effects of structural parameters,upstream slope ratio of dam and wave characteristic parameters are an⁃alyzed.It is concluded that:the average wave run-up of stepped revetment can be reduced by 40%~50%compared with smooth concrete revetment;under the same incident wave and slope ratio,the average wave run-up and the roughness as well as permeability coefficient decrease first,then increase and then decrease with the increase of the relative height of the step;under the same incident wave and relative height of the step,the average wave run-up de⁃creases,and the roughness and permeability coefficient fluctuate with the increase of slope ratio.According to the calculation results,the structural parameters and calculating parameters of stepped revetment corresponding to usu⁃ally adopted slope ratio of earth rock dam are summarized.

关 键 词：台阶式护坡 消浪护坡 土石坝加固 

分 类 号：TV640.39[水利工程—水利水电工程]