| 田雨,汪恩良,谢崇宝,任志凤,于俊.考虑辐照影响的寒区堤防冻深预测模型试验研究[J].水利学报,2023,54(9):1111-1121 |
| 考虑辐照影响的寒区堤防冻深预测模型试验研究 |
| Experimental study on prediction model of frost protection depth of embankment in cold regions considering the influence of radiation |
| 投稿时间：2023-02-24 |
| DOI：10.13243/j.cnki.slxb.20230104 |
| 中文关键词: 寒区 堤防 冻结深度 辐照因素 预测模型 |
| 英文关键词: cold region embankment frozen depth irradiation factors prediction model |
| 基金项目:国家重点研发计划项目(2018YFC0407301) |
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| 摘要点击次数: 1270 |
| 全文下载次数: 1898 |
| 中文摘要: |
| 寒区堤防冻结深度的变化是堤防建设和确保河堤正常运行时需考虑的重要因素。为探究太阳辐射对寒区堤防冻土冻深变化的影响，本文借助室内设计的太阳辐射模拟器开展物理边坡模型试验，研究了温度、未冻水含量及太阳辐射热变化与堤防冻结深度发展的关联性，并运用BP神经网络和基于鲸鱼优化算法的BP神经网络两种方法，建立冻结曲线和融化曲线预测模型。之后与Stephen公式和改进Stephen公式对比分析了4种预测方法的优劣。结果表明，基于鲸鱼优化算法的BP神经网络并考虑辐照影响的寒区堤防冻深发展预测模型预测效果更好，能有效解决冻土冻结深度与各影响因素间复杂的非线性关系，可为寒区堤防设计和维护提供参考。 |
| 英文摘要: |
| The change in freezing depth of embankments in cold regions is an important factor to be considered when constructing embankments and ensuring the normal operation of river embankments.In order to explore the impact of solar radiation on the changes in frozen depth of embankments in cold regions，this paper conducted physical slope model experiments using an indoor designed solar radiation simulator.The effects of temperature，unfrozen water content，and solar radiation heat changes on the development of embankment frozen depth were studied.BP neural network prediction models and BP neural network prediction models based on whale optimization algorithm (WOA) were established for the freezing and melting curves，respectively.Compared with the Stephen formula and the improved Stephen formula，the advantages and disadvantages of four prediction methods were pointed out.The results show that the BP neural network based on WOA，which considers the influence of radiation，has better prediction performance for the development of frost protection in cold regions.It can effectively solve the complex nonlinear relationship between frozen soil depth and various influencing factors，and can provide reference for the design and maintenance of cold region embankments. |
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