摘要
富春江船闸扩建改造工程是国内首个在现有运行的枢纽下游紧接原船闸扩建一座高等级、大尺度船闸的工程。由于枢纽库区容量小,无法结合船闸施工进行泄洪调节,且施工围堰距离枢纽泄洪闸较近,需要占用河道一定宽度,将对枢纽泄洪和防洪产生一定影响,泄洪产生的强大水流冲击也将对围堰和基坑的安全造成较大威胁,因此,需要对施工导流和围堰方案进行重点研究。通过对3种不同围堰布置和结构形式的综合比较,推荐采用土石过水围堰方案。该方案施工难度小,工程投资适中,能够满足防洪和工程施工的要求。
Ship lock reconstruction project on the Fuchunjiang River is the first project of high-grade and large-scale ship lock renovated from the old lock on the lower course of the existing and running power station hub. Because the hub reservoir＇s capacity is small, we can＇ t adjust the flood dispatching in combination of the lock construction. Besides, the cofferdam is close to the hub sluice, so the construction will occupy a certain part （ in width） of the river, and thus have an impact on the flood discharge and flood control and the strong impact of the flood discharge will threaten the cofferdam and foundation pit, so we need to focus on the research of construction diversion and cofferdam scheme. Based on the comparison of 3 different cofferdam layouts and structural types, we recommend to adopt the overflow earth and rock cofferdam style, which is characterized with easy construction and moderate investment, and can meet the requirements of flood control and construction.
出处
《水运工程》
北大核心
2014年第10期115-120,共6页
Port & Waterway Engineering
关键词
船闸
改扩建
施工导流
围堰
枯水期
泄洪闸
防洪
水位雍高
顶冲段
结构断面
ship lock
reconstruction
construction diversion
cofferdam
low water period
sluice
flood control
water level elevation
segment of water impact
structure section
