基于极限流速与承载力的给排水装置污染物堵塞识别方法

Identification method of pollutant blockage in water supply and drainage equipment based on ultimate flow velocity and bearing capacity

给排水装置被污染物堵塞会影响水体流动速度,使给排水系统对水资源的负载能力下降,造成水流调度不及时的问题。针对给排水装置被污染物堵塞的问题,设计基于极限流速与承载力的给排水装置污染物堵塞识别方法。完善给排水装置结构模型,确定水体极限流速标准与装置设备对流动水体的承载能力,完成水体极限流速与承载力分析。研究污染物堵塞情况,定位堵塞位置所处调水区域,完成基于极限流速与承载力的给排水装置污染物堵塞识别。实验结果表明,该方法能够根据水体流速值确定污染物堵塞行为的表现强度。该方法识别后在Ⅰ、Ⅱ、Ⅲ级污染物堵塞情况下给排水装置流速分别保持在5.25~6.00、3.75~4.50、1.50~3.00 m/s,有效避免给排水装置堵塞。

The blockage of water supply and drainage devices by pollutants can affect the flow rate of water bodies,reduce the load capacity of the water supply and drainage system on water resources,and cause the problem of untimely water flow scheduling.In response to the problem of pollutant blockage in water supply and drainage systems,a method for identifying pollutant blockage in water supply and drainage systems based on ultimate flow velocity and bearing capacity was designed.The structural model of the water supply and drainage device was improved,the standard for the ultimate flow velocity of the water body and the bearing capacity of the device equipment on the flowing water body was determined,and the analysis of the maximum flow velocity and bearing capacity of the water body was completed.The situation of pollutant blockage was studied,the location of the blockage in the water transfer area was located,and the identification of pollutant blockage in the water supply and drainage device based on the ultimate flow rate and bearing capacity was completed.The experimental results indicate that this method can determine the intensity of pollutant blockage behavior based on the water flow velocity value.After identification,the flow rate of the water supply and drainage system is maintained within 5.25-6.00,3.75-4.50,and 1.50-3.00 m/s,respectively,under the blockage of level Ⅰ,Ⅱ,and Ⅲ pollutants,effectively avoiding blockage of the water supply and drainage system.