丁坝头冲深和堵口抛石大小的计算

毛佩郁; 段祥宝; 毛昶熙

引用本文:	毛佩郁,段祥宝,毛昶熙.丁坝头冲深和堵口抛石大小的计算[J].水利水运工程学报,2001,(2):46-50

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丁坝头冲深和堵口抛石大小的计算
毛佩郁¹,段祥宝²,毛昶熙²
1. 南京水利科学研究院河港研究所, 2. 南京水利科学研究院水工研究所,

摘要:

将局部冲刷计算式应用到丁坝头和堵口截流冲坑深度的计算，并引用绕板桩渗流场渗势理论计算水流绕坝头的单宽流量（或流速),而给出了进占堵口丁坝坝头护脚抛石的稳定性计算式，经过验算，冲深与抛石稳定性的计算与实际工程的结果较为一致。

关键词: 冲刷深度抛石稳定性单宽流量流速丁坝

DOI：

分类号:TV649

基金项目:

Calculation of scour depth around groyne head and size of riprap in closure work

MAO Peiyu¹,DUAN Xiangbao²,MAO Changxi²

Abstract:

A local scour depth formula is applied in the calculation of scour depth around a groyne head in a closure work, and the unit discharge (or velocity) around the groyne head is computed by use of the potential flow theory in seepage field. A formula reflecting the stabilization of riprap in a closure work and of groyne head apron is thus deduced. The calculation results of scour depth and stabilization of riprap are consistent with the actual situation.

Key words: scour depth,stabilization of riprap,unit discharge,velocity,closure work,groyne,calculation formula