某土石坝堆石区沉降分析

摘要

以某土石坝为例, 根据其堆石区电磁式沉降监测数据与施工填筑进度, 采用经验模型logistic 回归模型, 对堆石区变形特性进行综合分析. 堆石区的沉降主要发生在施工填筑期, 其沉降量与施工进度密切相关.而使用模型进行坝体沉降预测时, 正确选取样本点是模型能否较好地预测坝体沉降量的关键.%Taking an earth rockfill dam as an example ,combined with monitoring data of electromagnetic and construction progress,and empirical model logistic is introduced;then the deformation characteristics of rockfill area is comprehensive analysed.The settlement of rockfill area is mainly occurred in the construction of filling stage,it is closely related to the construction progress.When using the model to predict the settlement of dam , the correct selection of sample points is the key to predict the settlement of dam body.