水利设施运行中水质污染的混沌非线性效应及控制方法

Chaotic Nonlinear Effect of Water Pollution in Operation of Water Conservancy and the Control Method

采用混沌非线性技术对水利设施运行造成的水质污染效应进行了分析，通过葛洲坝船闸运行实验结果发现，受影响的12km长的河道水位变幅1．50m，最大变幅时间11：00，16：00，20：00，22：00时．物理化学特性及主要污染物COD等在不同水域浓度差异极大，表现高浓度区远离污染源分布区，水体质量与河流水文期参数无明显变化，关系模糊，具有突变、约束、开放、自组织混沌非线性效应．应用耗散结构理论建立了水质污染非线性动力学模型，经实测验证误差为3％～6％．

In this paper, the effect of water pollution caused by operation of water conservancy is analyzed with the chaotic nonlinear method. According to the result of ship lock gate operation experiment in GeZhouBa, it is found that the amplitude of water level changing is 1.50m in influenced river which is 12km long, and the time of max amplitude is 11：00, 16：00, 20：00, 22：00. Physical chemistry properties and main pollution （COD,etc.） are greatly different in different areas. The high polluted area is far from the pollution source. Water quality and parameter of hydrology are not changed obviously, the relation between them is obscure, and has a chaotic nonlinear effect. A nonlinear dynamic model of water pollution is built with the theory of dissipation structure. It is verified that the error is 3%～ 6% in practice.