葛洲坝枢纽三江下引航道水流结构及淤积规律的研究

A Study on the Flow Structure and Silting Laws of the Lower Approach on the Third Channel of Gezhouba Project

1981年葛洲坝一期工程运行以来,发现船闸泄水后三江下游引航道出现往复式不稳定流,这种流态必将影响航道的淤积规律。为此,进行了原型四级流量同步观测及室内模型试验。特别是1987年将医用B超声波仪用于模型试验观测,获得了许多可贵资料,使研究工作取得了可喜的成果,对引航道水流结构及淤积规律的认识也前进了一大步。

Since the work on the first stage of Gezhouba project was operated in 1981, the unsteady reciprocating flow has found in the lower approach of third channel after shiplock emptying. This flow pattern would effect on silting law of approach channel. Therefore, a special study on the subject both in prototype and model was made. The field observations were conducted for four times. Especially, with the B Ultrasonograph applied in model test in 1987, a lot of gratifying results was obtained and a deep understanding of flow structure and silting law was acquired.