松滋河堵支并流整治措施研究

Research on Songzi River branches blocking

松滋河是荆江分流入洞庭湖的最主要河流,由于分汊众多,水流分散,河道淤积,防洪形势不断恶化。因此堵支并流,缩短河道岸线就是一项可供选择的整治措施。本文采用一维可视化河网水流泥沙数学模型,对松滋河中支堵支并流,并进行河道疏浚的整治措施进行了研究。研究结果说明,该项措施可以做到不抬高上游水位,下游水位基本维持现状,疏浚河段能够长期维持,堵支疏浚整治措施基本可行。

Songzi River is the main tributary that distributes Jingjiang to Dongting Lake. Because there are many forks which disperse the flow, the river channel is silting, and the flood situation is becoming worse. Thus blocking forks combined with dredging is one option of river regulation measures. By using visualized sediment transport model of river networks, the plan to block the middle reach forks combined with dredging the middle fork is studied in this paper. The research result reveals that the plan will not raise the upstream water level and keep the down stream water level nearly the same, the dredged river channel can be maintained for a long time, and the blocking and dredging measure is feasible.