通州沙河段西水道航道疏浚尺度选择研究  

Study on dredging scale of Tongzhousha west channel

作　　者：倪兵[1] 何瑞[2] 张玮[3] 

机构地区：[1]安徽省交通科学研究院,合肥210040 [2]河海大学,土木大禹班南京210098 [3]河海大学港口海岸与近海工程学院,南京210098

出　　处：《水道港口》2014年第6期608-612,共5页Journal of Waterway and Harbor

摘　　要：通州沙河道分为东西两水道,是长江下游典型的分汊河道。东水道岸线资源利用几近饱和,拟通过疏浚等工程措施开发西水道以增加深水岸线资源,需研究西水道疏浚尺度。首先计算原工程方案实施前后河道分流比;其次,研究在西水道布置单向航道的可行性,计算不同单、双向航道尺度对于西水道河槽容积和分流比的影响。研究结果表明:原工程航宽356 m方案对东水道分流比减幅较大;在工程河段布置单向航道办法可行,航宽180 m时东水道分流比减少0.5%以内,可以较好地平衡西水道开发和东水道保护的矛盾。Tongzhousha is a typical branch channel in the downstream of Yangtze River. Due to the saturated usage of the waterfront resources along east channel, exploitations of deep waterfront resources in west channel were planned. It was needed to research the dredging scale of west channel. Firstly, diversion ratio of the channel before and after regulation was calculated. Secondly, the feasibility of one？way channel was analyzed, as well as the influ？ence of one？way and two？way channel scale on the channel volume and diversion ratio. Results indicate that the scheme of 356 m channel width reduces the diversion ratio of east channel significantly. The one？way channel scheme is feasible and the scheme of 180 m channel width reduces the diversion ratio within 0.5%, which balances the exploitation of west channel and the preservation of the east channel.

关 键 词：潮流数学模型 分汊河道整治 航道疏浚 河槽容积 分流比 

分 类 号：TV142[水利工程—水力学及河流动力学] U617[交通运输工程—船舶及航道工程]