Landslide movement calculation method for multiple catchment areas based on homologous physical information neural network

By using a pre-training-fine-tuning method of homogeneous physical information neural networks, combined with depth-averaged shallow water control equations and the finite difference method, the high cost and low efficiency of landslide motion calculation in multi-catchment areas are solved, enabling rapid and accurate prediction and efficient assessment of landslide motion.

CN122413974APending Publication Date: 2026-07-17SHANGHAI JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Filing Date
2026-05-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing landslide movement prediction methods are computationally expensive and time-consuming at the regional scale of multiple catchment areas, and purely data-driven models lack physical consistency and generalization ability, making it difficult to meet engineering reliability requirements.

Method used

A pre-training-fine-tuning method based on a neural network with homogeneous physical information is adopted, combined with depth-averaged shallow water control equations and the finite difference method, to construct a multi-catchment landslide motion calculation model with shared physical knowledge. Through pre-training, size scaling, adaptive weight balancing, and flow depth weight sampling, the rapid and accurate calculation of landslide motion is achieved.

Benefits of technology

It improves the efficiency and reliability of landslide motion calculation, reduces the difficulty of iterative optimization, enhances the training accuracy and generalization ability of the model, and realizes rapid and accurate prediction of landslide motion in multi-catchment areas.

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Abstract

本发明公开基于同族物理信息神经网络的多集水区滑坡运动计算方法,先获取目标区域数字高程模型数据并划分集水区;再基于深度平均浅水控制方程与滑体流变特性,通过有限差分法数值模拟构建滑体运动数据集;接着以流深权重抽样获取时空采样点形成训练集;随后构建融合物理方程、边界及初始条件损失的总损失函数,训练得到共享物理知识的同族多集水区PINN预训练模型;针对选定集水区微调参数得到预测模型,最终输入待预测集水区信息,快速推理输出全时段滑体流深、流速时空变化过程。本发明将物理约束与神经网络结合,采用预训练‑微调策略,提升多集水区滑坡运动计算效率与泛化能力,具备物理可解释性,适用于区域滑坡灾害快速风险评估。
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