1.武汉大学水资源工程与调度全国重点实验室,湖北 武汉 430072
2.武汉大学水利水电学院水工程风险与防灾研究所,湖北 武汉 430072
郑屿禾(2000-),女,硕士研究生,主要从事大坝安全监测研究,E-mail: herice@whu.edu.cn。
唐小松(1986-),男,教授,博士生导师,主要从事库坝系统智能监测与智慧运维研究。E-mail:xstang@whu.edu.cn。
网络首发:2026-10-15,
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郑屿禾, 唐小松, 柯琴, 等. 融合坝体温度场信息和自适应特征权重的重力坝长期变形智能预测与分析[J/OL]. 武汉大学学报(工学版), 2026,1-14.
ZHENG Yuhe, TANG Xiaosong, KE Qin, et al. Prediction and Analysis of Long-Term Deformation for Gravity Dams Integrating Dam Temperature Field Information and Adaptive Feature Weights[J/OL]. Engineering Journal of Wuhan University, 2026, 1-14.
郑屿禾, 唐小松, 柯琴, 等. 融合坝体温度场信息和自适应特征权重的重力坝长期变形智能预测与分析[J/OL]. 武汉大学学报(工学版), 2026,1-14. DOI: 10.14188/j.1671-8844.2026.0056.
ZHENG Yuhe, TANG Xiaosong, KE Qin, et al. Prediction and Analysis of Long-Term Deformation for Gravity Dams Integrating Dam Temperature Field Information and Adaptive Feature Weights[J/OL]. Engineering Journal of Wuhan University, 2026, 1-14. DOI: 10.14188/j.1671-8844.2026.0056.
针对以往重力坝长期变形预测研究中温度效应表征不完善、模型特征与模型参数独立优化等问题,本文提出一种融合坝体温度场信息与自适应特征权重的智能预测方法。首先,通过引入坝内温度计实测数据完善温度特征集。然后,采用卷积神经网络-双向长短期记忆网络-注意力机制(Convolutional Neural Network-Bidirectional Long Short-Term Memory-Attention
CNN-BiLSTM-Attention)构建大坝变形混合预测模型,逐层提取多因子局部特征、建模双向时序依赖并聚焦关键时段。接着,采用北方苍鹰优化(Northern Goshawk Optimization
NGO)算法协同优化特征权重与模型超参数,实现特征评估与模型结构协同寻优。最后,基于核密度估计方法量化模型预测的不确定性。实例验证表明,得益于坝体温度场信息的引入与自适应特征-模型参数的协同优化机制,本文方法实现模型精度提升和得到更丰富的特征信息。
Previous research on long-term deformation prediction of gravity dams has limitations
including inadequate characterization of temperature effects and separate optimization of model features and hyperparameters. To address these issues
this study proposes an intelligent prediction method that integrates dam temperature field information and adaptive feature weighting. First
measured data from embedded thermometers is incorporated to enrich the temperature feature set. Second
a hybrid prediction model for dam deformation is developed based on a Convolutional Neural Network–Bidirectional Long Short-Term Memory–Attention (CNN-BiLSTM-Attention) framework. This model is designed to progressively extract local features from multiple influencing factors
capture bidirectional temporal dependencies
and identify critical time steps.Subsequently
the Northern Goshawk Optimization (NGO) algorithm is employed to simultaneously optimize both feature weights and model hyperparameters
thereby achieving a synergy between feature evaluation and model structure.Finally
prediction uncertainty is quantified using a kernel density estimation approach. A case study verifies that by integrating dam temperature field information and enabling collaborative optimization between feature weights and model hyperparameters
the proposed method effectively enhances prediction accuracy while extracting more informative features.
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