三峡水库175m试验性蓄水过程水文泥沙分析

Hydrological sediment analysis in process of 175 m trial impoundment of TGP reservoir

为掌握三峡水库175 m试验性蓄水过程中库区水位、流量、含沙量变化过程,通过三峡库区寸滩、清溪场、万县、朱沱(三)水文站实测的水位、流量、含沙量、水面比降资料,分析了蓄水过程中三峡库区沿程水面比降、库区水文站的水位流量关系、含沙量变化、库区冲淤变化等。分析结果为认识掌握三峡水库175 m蓄水后库区水文泥沙的变化规律积累了资料,对探索三峡库区水文泥沙的监测方式和分析研究将具有积极作用。

In order to make clear the variation process of water level,discharge and sediment content during the period of 175 m trial impoundment of TGP reservoir,we applied the measured data of water level,discharge,sediment content,water surface slope at the stations of Cuntan,Qingxichang,Wanxian,Zhutuo（3） to analyze the variation condition of water surface slope,level-discharge relation,variations of sediment content and scouring-silting in the reservoir area.The analysis results are useful for mastering hydrology and sediment variation law in the reservoir after impoundment of TGP,and are beneficial to improving the measurement methods and analysis of hydrology and sediment in the reservoir area.