三峡工程大江截流水文科技工作综述

长江三峡工程大江截流的水文泥沙实时信息与预报成果是大江截流优化设计、科学研究，安全度汛，施工组织和调度决策的重要依据。长江水利委员会水文局根据与中国长江三峡开发总公司鉴定的合同，在总结葛洲坝等工程截流经验的基础上，创造性地应用当今世界上可靠、先进的技术，创建了三峡大江截流水文泥沙监测系统和龙口水文预报模型，及时提供了各项水文信息预报成果，技术资料齐全，成果可靠，圆满地完成了合同所确定的各项任务，为

Review of Scientific and Technologic Work in Hydrology for theMain River Closure of the Yangtze River at TGP

During main river closure of the Yangtze River at the Three Gorges Project(i.e.TGP),it was showed that the real-time information and forecast in hydrology and sediment played important roles in optimizing the closure scheme design,protecting the cofferdams during flood season,doing construction organization and making regulation.In terms of the contract about TGP,signed with China Three Gorges Development Corporation,Hydrology Bureau of Yangtze River Water Resources Commission has successfully completed all tasks concluded in the agreement and made outstanding contribution to the closure engineering.In the work as mentioned above,the bureau creatively used more advanced techniques in the world today,developed sediment monitoring system and hydrologic forecasting models suitable to the closure gap,and provided varied types of hydrologic information in time.This paper gives a brief introduction about origin of the tasks,the adopted technological approach and its measures,the achievements and its application etc.