突发水污染事故污染云团快速追踪实验研究

以南水北调中线邢石界至古运河南段（邢古段）为例,建立了该渠段水质模拟模型,模拟了污染物扩散的规律。根据模拟结果建立了按照污染物投入量、投入位置和报警响应时间进行快速插值输出峰值浓度、位置和污染带范围等结果的应急决策系统,并与模拟结果进行比较。结果表明：所建立的基于插值法的快速应急决策系统能够满足决策的精度要求,插值计算污染物浓度峰值与模拟结果相差在0.10 mg/L范围内,污染云团到达位置相差在500 m范围内,长度相差在100 m范围内,该系统具有快速响应、预测准确的特点。刑古段为多支流分岔口的渠道,数值模拟法建模以及运算较插值法所耗时间长,插值法可为快速决策节约时间。

Experiment on fast track of cloud cluster caused by sudden accident of water pollution

Taking Xinggu section which is from Xingshijie to southern segment of ancient channel in the middle route of south-to-north water transfer project（ Xing-Gu segment） for example,the paper established the model of water quality simulation in the section and simulated the rule of pollutant dispersion. According to the simulation results,it established emergency decision system in accordance with the amount,location and alarm response time of pollutant to carry out fast interpolation and output peak concentration,location and range of pollution zone,and compared which with the simulation results. The result shows that the fast emergency decision system can meet the accuracy requirement of decisiion,the peak concentration of pollutants and simulation results differ in the range of 0. 10mg / L,the difference of location of pollution cloud cluster getting to is within 500m,the length difference of pollution cloud cluster is in the range of 100m. The system has the features of fast response,accurate prediction. The Xinggu section is a tributary of multi-channel. Compared with the method of numerical simulation,the interpolation method can save time of quick decision.