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张仁作题为《长江三峡工程泥沙问题》的主题报告
张仁(Ren ZHANG)SEDIMENT RESEARCH FOR THE THREE GORGES PROJECT ON THE YANGTZE RIVER SINCE 1993
Abstract: This article addresses sediment research
carried out for the Three Gorges Project since 1993, when the
construction of the Project was formally started. Emphasis of the
research has been placed on the solution of relevant problems arising
from design and construction of various structures, including
sedimentation problems in the Chongqing reach; layout of the upper lock
approach channel and ways and means to mitigate its deposition;
increasing reservoir capacity by optimizing reservoir operation;
compensating depth of flow required by navigation below the Gezhouba
Project caused by scouring; mitigation of adverse effects of erosion on
the reach from Zhicheng to Jiangkou; and evaluating scour of the
Jinjiang reach caused by releasing flows of low concentrations from TGP.
In addition, reduction of the sediment load entering into the reservoir
area of TGP in the recent years as well as that expected of the
projected construction of large hydropower stations on the Jinsha River
upstream of the TGP reservoir is also noted and discussed.