摘要
混凝土拱坝蓄水后,在水荷载作用下,坝体渗流安全不能处于全面受控状态。为掌握严寒区混凝土拱坝的渗流状态,文章根据初蓄—运行期大坝渗流监测成果,分析山口水电站坝基扬压力、坝体渗流、绕坝渗流、渗漏的变化情况。结果表明:受严寒地区温控难度大影响,部分测点渗压出现异常情况,但不影响大坝整体安全运行;帷幕后渗压折减系数符合设计要求,坝体渗压规律基本合理,绕坝渗流变化较小,渗漏量远小于经验值。大坝在初蓄—运行期的渗流变化符合一般认知规律,大坝渗流处于安全状态。
The seepage safety of the dam can not be fully controlled under the action of water load after the concrete arch dam is impounded.The changes of dam foundation uplift pressure,dam body seepage,seepage around the dam and leakage are analyzed according to the dam seepage monitoring results during the initial impoundment-operation period in order to master the seepage state of the concrete arch dam in severe cold area.The results show that the seepage pressure of some monitoring points are abnormal due to large temperature control difficulty in cold area.The integral safe operation of the dam is not affected.The reduction coefficient of seepage pressure behind the curtain meets the design requirements.The seepage pressure law of the dam is basically reasonable.The change of seepage around the dam is small.The leakage is far less than the empirical value.The seepage change of the dam during the initial storage-operation period conforms to the general cognitive law.The dam seepage is in a safe state.
作者
李秀文
赵向波
王建
LI Xiuwen;ZHAO Xiangbo;WANG Jian(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Xinjiang Eerqisi River Investment and Development Group Co.,Ltd.,Urumqi 830000,China)
出处
《中国水能及电气化》
2022年第7期1-6,共6页
China Water Power & Electrification
基金
国家重点研发计划项目(2017YFC1501201)
新疆2019—2021年院士工作站合作研究项目新疆水专项(2020.C-004)。
关键词
混凝土拱坝
渗流
安全监测
分析
concrete arch dam
seepage
safety monitoring
analysis
作者简介
李秀文(1987-),男,博士,工程师,主要从事水利工程监测及信息化管理工作。
