云峰水电站大坝防渗性能分析与评价

云峰大坝修建在高寒山区,在施工期部分浇筑块混凝土早期受冻,降低了混凝土抗渗性能;坝基存在大断层、右岸坝头陡坡和左岸坝头存在缺陷对坝体稳定不利.由于坝体渗漏,蓄水运行后,大坝溢流面、上下游面冻融和冻胀破坏比较严重,不得不进行补强加固.对云峰水电站大坝防渗性能进行分析与评价.

Analysis and Evaluation on Dan Anti-seepage Performance in Yunfeng Hydraulic Power Station

Yunfeng dam is located at alpine mountainous region,during the early period of the construction;block concrete was frozen,reducing its anti-seepage performance.Unfavorable factors such as big fault in its foundation,defects in the dam head abutment slope of the right side bank and in the left side bank head exist.Due to dam body seepage,after the operation,severe damages like freeze-thaw and frost heave onto the spillway face and upper and lower stream face.So reinforcement of the dam has to be done.This pa...