松滋河分流演变发展趋势

Water diversion evolution tendency of the Songzi river

在简要统计分析长江来水来沙变化、荆江三口分流分沙衰减过程的基础上,着重研究论证了松滋河在三口分流中的地位、作用和演变发展趋势。分析论证结果表明,三口中的藕池河与虎渡河已处于快速衰亡状态,惟有松滋河,尤其是松滋河西支能够在较长时期保持较大分流量。该结论对于长江中游防洪规划续编,江湖关系调整设计,以及江湖综合治理措施等,既具有积极意义,又是基本依据。

Based on analysis of decay process of water and sediment diversion of the Yangtze river, the role and evolution tendency of the Songzi river in 3 distributary rivers of the Jingjiang reach is emphatically analyzed. The analysis results demonstrate that 2 distributary rivers of the Jingjiang reach, Ouchi distributary river and Hudu distributary river have been in. fast decline state, only the Songzi distributary river, especially its west branch, can maintain comparably large diversion discharge in a long time. This conclusion is the basis and has important significance to the plan of flood control of the middle and lower Yangtze river, the design of the Yangtze river and the Dongting lake relation and the comprehensive harnessing of the Yangtze river and the Dongting lake etc.