基于SPSS的新型沉沙池的影响参数分析

Analysis of Influence Parameters for New Type Desilting Ejection Basin Based on SPSS

新型二级水沙分离设施圆中环沉沙排沙池的设计影响参数较复杂,彼此关联性较强,为了便于优化设计参数,以试验数据为基础,运用SPSS软件,分析其流量与沉降时间、内环半径与沉沙粒径的关系。研究结果表明:相同中心出水环高度条件下,随着进水流量增加,泥沙沉降量不随流量的增加而变化,内环泥沙沉积形态和沉降量基本相同;沉降时间随进水流量的增加而骤减,两者成反比关系,但进水流量大于3 m^3/s,沉降时间基本不变。中心出水环增高1.26 m可有效延长泥沙沉降时间和增加内环沉沙容积利用率。随着内环半径增加,最大沉降粒径迅速减小,内环半径与最大沉降粒径成二次函数关系,但在半径大于12 m时,最大沉降粒径基本不变;最大沉降粒径与中心出水环高度无关。研究表明现状"圆中环"设计半径是合适的。

The influencing parameters for designing the circular-ring sediment desilting basin of a new type secondary water separation facilities are more complex and highly correlated.In order to optimize the design parameters,the SPSS software is used to analyze the relationship between flow and desilting time and the relationship between inner ring radius and desilting particle size based on experimental data.The research shows that:under the condition of same central outflow ring height,the sedimentation amount does not change with the increase of inflow flow,and the sedimentation form and volume in central outflow ring are basically the same;the desilting time decreases with the increases of inflow flow with a inverse relationship,but when the inflow flow is greater than 3 m^3/s,the desilting time is basically unchanged.It can effectively prolong the desilting time of sediment and increase the utilization rate of sediment volume when the central outflow ring height is raised by 1.26 m.With the increase of inner ring radius,the maximum desilting particle diameter decreases rapidly with a quadratic function relationship between them,but when the inner ring radius is greater than 12 m,the maximum desilting particle diameter is also basically unchanged.The maximum desilting particle size is irrelevant to the height of central outflow ring.The research shows that the current design radius of the circular-ring is appropriate.