某混凝土重力坝渗流监测资料分析  

Analysis of Seepage Monitoring Data of a Concrete Gravity Dam

作　　者：马厚 MA Hou(Guangdong Hydropower Planning&Design Institute Co.Ltd.,Guangzhou 510170,China)

机构地区：[1]广东省水利电力勘测设计研究院有限公司,广东广州510170

出　　处：《海河水利》2024年第11期102-106,112,共6页Haihe Water Resources

摘　　要：渗流状态是反映混凝土重力坝运行稳定的重要指标,对掌握大坝工作性态具有重要作用。采用历史测值、特征值、逐步统计回归模型建模等对坝基渗流监测数据进行了分析,研究大坝渗流变化规律以及水压、降雨、温度、时效等分量的影响。结果表明,大坝渗流监测设施完善,部分坝基扬压力测值存在逐渐增大的趋势性变化,左右岸不存在绕坝渗流情况,大坝总渗漏量逐步趋于稳定。逐步回归统计模型整体与实测数据拟合度高,各分量占比能够反映真实情况,存在趋势性变化的测点除时效分量外,主要受上下游水位影响,需要重点关注水位变化。The seepage state is an important indicator reflecting the stable operation of concrete gravity dam,and plays an important role in mastering the working behavior.The variation law of dam seepage and the impact of components such as water pressure,rainfall,temperature,and time on seepage safety were studied through historical measurements and characteristic value analysis of monitoring data,as well as modeling analysis using stepwise statistical regression models.The results showed that the dam seepage monitoring facilities were complete,and some of the dam foundation uplift pressure measurements showed a gradually increasing trend.There was no seepage around the dam on the left and right banks,and the total seepage of the dam gradually tended to stable.The stepwise regression statistical model had a high overall fit with the measured data,and the proportion of each component could reflect the real situation.In addition to the time component,the measurement points with trend changes were mainly affected by the upstream and downstream water levels,and it was necessary to focus on the water level change.

关 键 词：混凝土重力坝 渗流监测 资料分析 逐步回归统计模型 

分 类 号：TV698.12[水利工程—水利水电工程]