基于沉降数据对Tatay面板坝变形参数的反演分析  

Inversion Analysis of the Tatay Concrete Face Rockfill Dam's Parameters Based on the Settlement Deformation Monitoring Data

作　　者：张小清[1] 沈振中[1] 

机构地区：[1]河海大学水利水电学院,南京210098

出　　处：《中国农村水利水电》2016年第2期121-123,129,共4页China Rural Water and Hydropower

摘　　要：根据Tatay面板坝的实际情况和工程特点,建立了混凝土面板堆石坝坝体及坝基的三维有限元模型。根据施工期、运行期测得的原型大坝沉降变形资料,用堆石体的时效分量模型对其进行分析处理,分离出自重、水压力引起的变形和时效分量。为了避免水管式沉降仪和电磁式沉降管的在监测过程中的监测缺陷,以减小反演误差,先依据电磁式沉降管测得的沉降变形,采用可变容差法反演得到堆石体的邓肯张E-B模型参数,然后以水管式沉降仪测得的沉降变形作为校核依据。According to the actual geological conditions and engineering features of the tatay concrete face rockfill dam project,the 3D finite element model of dam body and dam foundation is built.On the basis of observed prototype settlement monitoring data of the concrete face rockfill dam during construction and operation,the deformation caused by gravity and water pressure and aging components are separated from monitoring data by using the aging component model.In order to avoid the monitoring defects of the electromagnetic sedimentation tubes and water tube settlement gauges in order to reduce the inversion error,Duncan E-B model parameters of the pile of rock body are inversely analyzed by variable tolerance displacement method based on the data measured by electromagnetic sedimentation tubes,then with the data measured by water tube settlement gauges for checking.

关 键 词：tatay混凝土面板堆石坝 电磁式沉降管 水管式沉降仪 邓肯张E-B模型参数 反演分析 时效分量 

分 类 号：TV641.43[水利工程—水利水电工程]