TANGYang-bo,LIWei,LIChong,et al.Mechanism and Data Driven Hybrid Simulation for Sediment Deposition in Combined Sewer System[J].China Water & Wastewater,2025,41(9):130-136.
机理-数据驱动混合的合流制管道沉积物模拟研究
- Title:
- Mechanism and Data Driven Hybrid Simulation for Sediment Deposition in Combined Sewer System
- Keywords:
- combined sewer system; sewer sediment; hybrid simulation; data driven
- 摘要:
- 管控管道沉积物已成为城市水环境治理的重要目标，而对管道沉积物的预测和模拟是管控的基础条件。为此，以机理-数据驱动混合的方式对合流制管道沉积物进行模拟，混合模型的均方误差（MSE）小于1%、平均绝对误差（MAE）为0.018 m、相关系数（R2）为0.68，呈现出较好的模拟效果。混合模型总体计算效率较高，模拟10 d沉积层变化的用时为分钟级。混合模型一方面降低了机理模型对现场采样数据的依赖性，另一方面也弥补了数据驱动模型可解释性不足的缺点。
- Abstract:
- The management of pipeline sediment has emerged as a critical objective in urban water environment governance, with the prediction and simulation of sediment deposition serving as a fundamental prerequisite for effective control. Therefore, a mechanism and data driven hybrid method was employed to simulate the sediment deposition in the combined sewer system. The hybrid model demonstrated a mean square error (MSE) of less than 1%, a mean absolute error (MAE) of 0.018 m, and a correlation coefficient (R2) of 0.68, indicating a satisfactory simulation performance. The hybrid model demonstrated high overall computational efficiency, with the simulation of 10-day sediment layer changes achievable at the minute-level timescale. The hybrid model not only alleviates the reliance of the mechanism model on field sampling data, but also compensates for the limited interpretability of data driven models.
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