用matlab软件编制的突发水污染事故的解析模型，可计算和绘制污染团浓度场、事故下游各点污染物浓度变化过程、超标时间等。- the regularity of its water change and pollution mass features, as well as the dumping situation at its upper-reach streams. In addition, we have also worked out its substandard pollutant range, on-spot concentration distribution, the process of its water-pollutant concentration change