摘要
介绍了监利分汊弯道的情况,通过分析监利河段近百年历史演变规律和近期深泓、洲滩、汊道分流比和上游来水来沙等变化特点,论述了下荆江典型蜿蜒河道将被改造成限制性蜿蜒河道以及监利河道主流稳定在右汊(南汊)的现有条件。认为1998年批准的《长江中下游干流河道治理规划报告》提出的“监利弯道保持主流走左汊的分汊河段”的规划思想与目前的河势演变趋势冲突,并明确提出监利河段河势演变的趋势为主泓将较长时间稳定在右汊。提出监利河段的防洪规划、岸线利用和城区发展等综合整治初步设想,可较好地解决监利的水运交通和城区防洪等问题,为荆江河道的中远期综合治理奠定基础。
The channel characteristics of meandering and anstomosing at the Jianli Reach in Jingjiang River are introduced, and the river landscape evolution history during recent hundred years is described. The changes of thalweg, the evolutions of central and pint bars, the diversion ratio of branching channel and the change character of discharges of water and sediment are analyzed. With the implement of river regulation projects, the Lower Jiangjiang River was developed from typical meandering channel to limited meandering channel. According to preceding analysis, It can be concluded that the main flow of Jianli Reach is stabilized on the right branche. The conclusion, however, is conflicting to the report of ＂The Main River Improvement Planning of Middle and Lower Reaches of Yangtze River＂ approved in 1998. Based on the conclusion, a preliminary consideration is proposed on flood control planning, shoreline utilization and city area development of Jianli Reach. This suggestion may better solve the questions of river navigation and flood control of Jianli Reach, and establishes a good foundation for a long-term river regulation of Jingiiang River.
出处
《长江科学院院报》
CSCD
北大核心
2006年第5期6-9,13,共5页
Journal of Changjiang River Scientific Research Institute
关键词
监利河段
综合整治
主泓稳定
右汊
Jianli Reach
river regularization
main flow stabilization
right branch
