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| 基于先验知识引导残差建模的高堆石坝变形场重构 |
| Deformation Field Reconstruction of High Rockfill Dams Based on Prior Knowledge-Guided Residual Modeling |
| 投稿时间：2025-07-24 修订日期：2026-03-09 |
| DOI： |
| 中文关键词: 堆石坝 变形场重构 残差建模 时空插值 先验知识 |
| 英文关键词: Rockfill dam deformation field reconstruction residual modeling spatio-temporal interpolation prior knowledge |
| 基金项目:国家自然科学(52322907，52579134，U23B20149) |
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| 中文摘要: |
| 变形控制是保障堆石坝建设与运行安全的关键之一，准确的变形分析与预测是变形控制的基础。由于现有计算方法误差较大、监测点布置相对稀疏等问题，难以全面准确掌握堆石坝变形分布与演化规律。本文提出一种基于先验知识引导残差建模的堆石坝变形场重构方法，以有限元计算值与监测值之间的残差为对象，通过残差建模方法来修正有限元计算结果。首先，构建量化非平稳时空数据相关性的变异函数模型。其次，以堆石坝变形的空间协调性为先验知识，采用编码器-解码器结构构建先验知识引导的多特征时空插值模型，通过预测残差来修正有限元计算结果以重构大坝变形场。本文以两河口心墙堆石坝为例，重构了大坝变形场，与实际监测数据吻合较好且满足物理一致性。通过模型消融实验、对比实验、鲁棒性分析和参数敏感性分析验证了重构方法的泛化能力与鲁棒性，该方法可为大坝全生命期的健康诊断和安全评估等提供可靠的数据支撑。 |
| 英文摘要: |
| Deformation control is one of the key factors for ensuring the safety of rockfill dam construction and operation. Accurate analysis and prediction of deformation form the foundation for effective deformation control. However, due to the relatively sparse spatial distribution of monitoring points and the significant errors in existing deformation calculation methods, it remains challenging to comprehensively and accurately grasp the distribution and evolution of rockfill dam deformation. This study proposes a deformation field reconstruction method for rockfill dams based on prior knowledge-guided residual modeling. The method constructs a residual model using the residuals between finite element method simulation results and monitoring data to compensate for the errors of the finite element method. First, a variogram model is constructed to quantify the correlation of non-stationary spatio-temporal data. Second, a prior knowledge-guided multi-feature spatio-temporal interpolation model is developed using an encoder–decoder framework to regard the spatial coordination requirement of rockfill dam deformation as prior knowledge. The predicted residuals are then used to correct the finite element method simulation results and reconstruct the dam deformation field. This study uses the Lianghekou core wall rockfill dam as a case study to reconstruct the dam deformation field, which agrees well with the actual monitoring data while maintaining physical consistency. The generalization capability and robustness of the reconstruction method were validated through model ablation experiments, comparative experiments, robustness analysis, and parameter sensitivity analysis. The proposed method can provide reliable data support for dam safety monitoring, health diagnosis, and safety assessment throughout the entire life cycle. |
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