大顶子山航电枢纽工程二期截流设计

River closure design for second-stage of Dadingzishan navigation and hydropower project

文中介绍了二期截流设计中截流时段、标准及流量的选定过程,并提出了龙口段分区规划及截流的施工组织要求。实践证明,该工程龙口位置的选择及龙口宽度的确定是合理有效的,在二期截流实施过程中最大限度的减少了工程施工对松花江通航的干扰。

The paper introduces the selection process of river closure period, standard and flow in the river closure design of second-stage project and puts forward the district planning of closure gap section and the construction organization requirement of river closure for the Dadingzishan navigation and hydropower project. The practice shows that the position selection and the width determination of closure gap are rational and effective, which could minimize effect of the project construction on navigation of Songhuajiang river in the construction of second-stage river closure.