河口治导线放宽率的确定  

Determination of widening rate of estuarine regulation line

作　　者：唐洪武[1] 丁兵[1] 杨明远 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]广东省航道局,广东广州510150

出　　处：《水利学报》2008年第1期59-65,共7页Journal of Hydraulic Engineering

基　　金：新世纪优秀人才支持计划(NCET-04-0494);国家自然科学基金(5047906850779014)

摘　　要：根据输沙平衡原理及水流挟沙力公式推导出河口治导线放宽率计算式,并分析了放宽率与潮差、落潮历时和单宽落潮流量等各个参数之间的关系。研究表明该公式中放宽率与各个影响参数的关系符合河床演变规律。以珠江虎跳门河口段及长江深水航道二期整治工程为例,分别对本文公式、罗肇森公式和陈志昌公式计算的放宽率进行了比较:本文公式计算的结果介于罗肇森公式及陈志昌公式之间;计算得到的虎跳门河口段及长江深水航道二期整治工程的放宽率分别为1.15%和0.43%,与工程实际采用值1.35%和0.47%相近。可以采用本文公式确定河口地区治导线放宽率。Based on sediment transport equilibrium principle and sediment-carrying capability formula,a formula of the widening rate of estuarine regulation lines is developed.The analysis on relationships between widening rate and related parameters,such as tide range,ebb tide duration and unit ebb tide discharge etc.,shows that the formula agrees well with the law of channel evolution.The applications of the proposed formula to regulation engineering of the Hutiaomen river mouth in Zhujiang River and regulation engineering of deep waterway in the Changjiang River show that the calculation results are approximately the same as those calculated by the formulas given by other authors and agree with the widening rates adopted by the engineering practice.

关 键 词：治导线放宽率 输沙平衡 挟沙力公式 航道整治 河口 

分 类 号：TV148[水利工程—水力学及河流动力学]