论文部分内容阅读
以上海市某分流制排水系统的管道沉积物为研究对象,利用InfoWorks CS模型软件建立排水系统模型,并分别采用Ackers-White模型和KUL模型对管道内沉积物的沉积和冲刷过程进行动态模拟,模拟周期设置为两个月。结果表明,旱流时排水系统流通性较差,管道内水流速度较低,沉积物沉积明显;降雨期间,两种模型的模拟结果呈现出明显差异,采用Ackers-White模型模拟发现管道内沉积物发生明显冲刷,而使用KUL模型模拟时沉积物厚度没有明显变化。通过比较,推荐采用Ackers-White模型进行管道沉积物的动态模拟。
In this paper, the drainage sediment of a diversion system in Shanghai was taken as the research object. The drainage system model was established by using InfoWorks CS model software. The Ackers-White model and KUL model were used to simulate the deposition and erosion process of sediment in the pipeline. The simulation period is set to two months. The results show that the drainage system in the dry flow is poor in flowability, the flow velocity in the pipeline is low and sediments are obviously deposited. During the rainfall, the simulation results of the two models show obvious differences. Using Ackers-White model to simulate the sediments in the pipeline Significant erosion occurred, but the sediment thickness did not change obviously when simulated by KUL model. By comparison, Ackers-White model is recommended for the dynamic simulation of pipeline sediments.