葛洲坝枢纽大江航道范围的确定与认识

Some Understanding on Determination of Dajiang Waterway Limits around Gezhouba Hydro-junction

本文通过回顾葛州坝大江航道设计范围、验收与运行管理范围两种提法的形成过程,提出枢纽航道应由引航道、引航道口门区、口门区与河道的连接段的三部分组成的基本认识。

By reviewing the two distinct conceptions on ihe determination of Dajiang Waterway limits formed in the design period and in check acceptance/opera tional management period, this paper suggests that the waterway limits near a hydro-junction should comprise three fundamental parts, i. e. approach channel, entrance district to approach channel and the transition region con -necting to the main waterway.