深井供水管网中沙水水质数学模型的建立及应用

Establishment and Application of Silt Movement Model in Water Distribution System Supplied by Deep Wells

针对深井井群复合供水中直供井出水含沙量较高对水质造成突发性污染的问题,以泥沙的运动学理论为基础,建立了泥沙在管网水输送中的沙水水质数学模型。利用EPANET-MSX模块编码对模型进行求解,动态地模拟出泥沙在管网中的运动状况,并求出了出沙对水质的影响范围、持续污染时间以及具体用户的出沙量和出沙持续时间,为水质突发性污染的应急决策提供了科学依据。

Aimed at the problem of drinking water polluted by silt from the deep wells in the multi- ple-well water distribution system, a dynamic model of silt in the system was established based on silt kinematics. EPANET-MSX was used to solve the model, the motion state of the silt in the system was simu- lated, and the influence range of silt on water quality, continuous pollution time as well as the silt content and duration time at users were obtained. All these provide a scientific basis for the emergency decision of sudden water pollution accidents.