凌津滩水电站20坝段设计

凌津滩水电站20坝段位于泄洪闸坝段与厂房坝段之间,开挖揭露的地质条件较差,结构设计比较复杂,为保证1997年汛期厂房施工,该坝段的设计做了比较大的调整,本文系统介绍了该坝段设计情况,包括处理措施、接缝灌浆以及三维有限元计算分析,经过实际运行检验,证明该坝段设计是成功的,既保证了如期发电目标的实现,又满足工程安全要求。

Design of No.20 Dam Section in Lingjintan Hydropower Station

The No 20 dam section as described in this paper is situated between the spillway section and the powerhouse section, where a poor geological condition was revealed during excavation and the structural design was complicated. In order to ensure the powerhouse construction during flood season in 1997, the design of this dam section was largely modified. This paper outlines the design of this dam section, including handling measures, joint grouting, calculation and analysis by means of three-dimensional finite element method. The practical operation has justified the success of the dam section design, which has ensured both the power generation on schedule and satisfied the requirements for the safe and reliable operation of the project.