河南省宝泉抽水蓄能电站下库大坝渗流特征分析

Analysis of seepage in lower reservoir dam of Baoquan Pumped Storage Power Station in Henan Province

为增加水力发电量,将河南省宝泉水库改建为抽水蓄能电站枢纽下水库大坝,以扩大水库库容并满足装机发电需要。改建大坝包括加高、加厚、增设钢筋混凝土防渗面板及监测设施。多年渗流监测资料及综合性成果表明:局部裂缝引起大坝混凝土防渗面板渗压值增大,但新老坝胶结处未出现渗水现象,新加厚坝体内部基本未测出渗流量,面板局部渗流量未渗透到坝体内,反映大坝工作性态正常。

In order to increase the hydropower generation,Baoquan Reservoir in Henan Province was reconstructed into lower reservoir dam of Baoquan Pumped Storage Power Station to increase the storage and meet the power generation demand.Reconstruction project included the dam heightening,dam thickening,adding reinforced concrete faces and monitoring instruments.The long-term monitoring statistics and the comprehensive analysis results showed that the increased seepage pressure in reinforced concrete faces was due to the dam partial crack;there was no seepage flow in dam interface of old and new dam body nor inside the thickening dam body,and the local seepage of the panel didn t flow into the dam body.These results indicated that the dam is in normal operation.