不冲流速限值在流域骨干引排工程中的应用  

Application of non-scouring velocity limit value in backbone diversion and drainage project of watershed

作　　者：李昱 郑宏伟 陈玉龙 费照骅 LI Yu;ZHENG Hongwei;CHEN Yulong;FEI Zhaohua(Jiangsu Taihu Planning and Design Institute of Water Resources Co.,Ltd.,Suzhou 215100,China;Changzhou Water Conservancy Construction Investment and Development Co.,Ltd.,Changzhou 213000,China)

机构地区：[1]江苏省太湖水利规划设计研究院有限公司,江苏苏州215100 [2]常州市水利建设投资开发有限公司,江苏常州213000

出　　处：《江苏水利》2021年第4期12-15,共4页Jiangsu Water Resources

摘　　要：现有规范规定的不冲不淤的流速限值是基于梯形渠道断面提出的,太湖流域骨干引排工程常采用坡墙结合的复式断面,其适用性有待进一步研究验证。采取数值模拟的方法,以白屈港河道综合整治工程为例,对河道不冲流速的限值进行了计算探讨。研究表明:对于非黏性土的复式断面河道,其允许不冲流速的计算水深可按照河底水深选取。The non-scouring and non-silting velocity limit value stipulated by existing code was based on trapezoidal channel section. The composite section of slope-wall combination was often used in backbone diversion and drainage project of Taihu Basin,and its applicability needed to be further studied and verified. Taking the comprehensive regulation project of Baiqugang River as an example,the numerical simulation method was adopted to calculate and discuss the limit value of river non-scouring velocity. The research showed that for the non-cohesive composite cross-section river,the calculation depth of the allowable non-scouring velocity could be selected according to the river bottom depth.

关 键 词：复式断面 不冲流速 河底水深 数值模拟 

分 类 号：TV212[水利工程—水文学及水资源]