摘要
坝基在水库大坝建成后的最初几年出现析出物是比较普遍的现象。这是由于大坝建成蓄水后,库区水环境发生了变化,地下水渗出排水廊道后处于氧化环境,低价Fe、Mn被氧化后沉淀形成析出物。根据广州抽水蓄能电站下水库主坝坝基灌浆廊道析出物试样的试验结果,分析坝基析出物来源及其对工程运行的影响,并提出处理建议。
Precipitates are frequently seen on dam foundation during the first several years after the dam was built, which is resulted from change of reservoir area water environment after impounding. Groundwater is in oxidizing environment after seepage into the drainage gallery. Precipitates forms after oxidation of low valence metal Fe and Mn. According to the testing resuhs of precipitates out of the main dam foundation grouting gallery of Guangzhou Pumped Storage Power Station, the authors analyzed the sources of precipitates and its influence on engineering op- eration, and put forward suggestions.
出处
《广西水利水电》
2017年第3期8-11,共4页
Guangxi Water Resources & Hydropower Engineering
关键词
坝基
析出物
水环境
广州抽水蓄能电站
Dam foundation
precipitate
water environment
Guangzhou Pumped Storage Power Station
