老挝会兰庞雅水电站引水系统设计

Design of Diversion System of Houay Lamphan Gnai Hydropower Station in Laos

老挝会兰庞雅水电站引水系统因水头高、线路长、明管段覆盖层较厚,设计难度大。笔者主要介绍了引水系统布置方案的选择和主要建筑物设计,表明引水系统方案选择时应主要考虑工程投资、地质风险、施工难度和工程工期等因素;明管段设计中,镇墩裂缝控制、竖向变形协调和横向位移限制等是保证其结构安全的关键。电站2015年竣工发电后,引水系统安全运行至今,表明其设计是安全可靠的。

Due to high head,long line and thick overburden in the exposed penstocks section,the design of the diversion system of Laos Houay Lamphan Gnai Hydropower Station is difficult.This paper mainly introduces the selection of diversion system layout scheme and the design of main buildings,which indicates that the project investment,geological risk,construction difficulty and construction period should be considered in the selection of diversion system scheme.In the design of exposed penstock section,the key to ensure the structural safety is the control of anchored pier cracks,deformation coordination in vertical and displacement restriction on transverse.After the power station was completed in 2015,the diversion system has been running safely,which shows that its design is safe and reliable.