摘要： 通过建立起的GA-BP 模型对测缝计的实测数据进行预测，结果表明GA-BP 预测模型在大坝监测技术上是有效可行的，并且GA-BP 预测模型比单纯的神经网络预测模型具有更高的预测精度。

Abstract: By establishment of GA-BP model, the measured value by joint meter was forecasted. The result indicated that GA-BP model was effectively in dam safety monitoring, and GA-BP model was of higher forecasting precision than neural network model.