深圳河一、二期河道治理后水沙特性变化分析

Analysis of Water Sediment Variation after Regulation Project Phase 1 and Phase 2 in Shenzhen River

深圳河一、二期河道治理工程塑造了新的河道形态,改变了深圳河潮流特征和泥沙输移特性。实测资料分析表明,深圳河治理后,河道阻力大大减小,潮波易于上溯,有利于涨潮流挟带泥沙进入深圳河而不利于落潮流将泥沙挟带出河口。这一变化将对深圳河的河道冲淤产生根本影响。

The Phase 1 and Phase 2 work of Shenzhen River regulation projects reshaped the morphology of the fiver, changing the flow and the silt transport patterns. The analysis of the real - measured data indicated that, after the Shenzhen fiver regulation, the resistance force in the fiver course was reduces greatly, making it easy for the tidal waves to go upstream. It meant that it was favorable for the tidal flood current to carry silt to the Shenzhen river and unfavorable for the ebb current to carry the silt out of the river mouth. This change will cause the major influence on scouting and silting in the Shenzhen fiver course.