蔺河口水电站碾压混凝土拱坝设计

蔺河口水电站大坝为碾压混凝土双曲拱坝。针对碾压混凝土大仓面快速连续上升的施工特点，大坝布置力求简单，大坝基础排水采取自流方式，不设集水井和爬坡廊道。应力计算考虑坝体混凝土温度未冷却到稳定温度场或准稳定温度场时拱坝蓄水工况，相应接缝灌浆设计具有重复灌浆功能，以保证大坝的运行安全。

Design of RCC arch dam of Linhekou Hydropower Station

The Linhekou Hydropower Station has a RCC double-curvature arch dam.Considering the salient feature of large-batch,sucressive and rapid rising of RCC construction,and in pursuit of a simple dam layout,a gravity flow pattern was choosed for the drainage of the dam,foundation without sump and slope gallery. Such loading case as reservoir impounding before the RCC reaching its steady or quasi -steady temperature field shall be adopted in the stress computation,and the joint grouting of the dam was designed to be repeatable to assure a safe operation of the dam.