三峡工程大江截流水文泥沙监测规划

鉴于三峡工程大江截流是一项复杂的系统工程，具有水深大，流量大，抛投量大和截流期不断航等显著特点。水文泥沙监测作为其重要的组成部分，监测导流与截流过程中水流泥沙和水下地形的变化，为截流设计优化，调整施工方案与措施等提供科学的决策依据，同时也为导流明渠分流与通航，围堰度汛，截流水力学试验研究及水文预报，水文分析计算等提供水文原型观测资料。本文介绍了水文泥沙监测的目的、任务和水文数据采集，传输，处理与信

Hydrologic and Sediment Monitoring for the Main River Closure of the Yangtze River at TGP

The main river closure for construction of the Three Gorges Project (i.e. TGP) on the Yangtze River is a complicated systematic engineering with deep water, large discharge, strongly riprapping and keeping navigation during closing the stream. In the process, hydrologic and sediment monitoring has been employed to observe water-silt variation and underwater topography, and provided a scientific decision basis for optimizing the construction schemes. It has also been used for providing the prototype observation data for the channel diversion, keeping navigation,protecting cofferdams during flood season, hydraulic experimental study as well as hydrologic forecasting and calculating. This paper shows reader the case of the monitoring, the instrumentation and technology used for hydrologic data collection, transmission, procceding during the river closure.