1 研制目的 三河闸站建部以来使用的报汛调度工作曲线是单一的水位流量关系曲线(即是渡水位与三河闸下泄流量建立关系),见图1。但在实际应用中,仍存在以下问题: 1)从Z～Q关系曲线可以知道,该站中低水位河槽控制较好,历年曲线较稳定;而高水位时,历年曲线有摆动现象,河槽控制逐渐减弱。不利于该站水位流量关系的历年综合分析。 2)原用Z～Q关系曲线系开闸流量达稳定后的Z～Q关系曲线,对开闸过程中未达稳定前瞬时流量 1 Purpose of Research The flood control and dispatch working curve used since the construction of Sanhe Gate Station was a single curve of water flow rate (that is, the relationship between the water level and discharge of Sanhe sluice) (see Figure 1). However, in practical applications, the following problems still exist: 1) From the curve of Z-Q, it can be seen that the control of low and medium water level channels in this station is good, and the curve over the years is relatively stable. When the water level is high, Gradually weakened. Not conducive to the water level of the station traffic over the years comprehensive analysis. 2) The original Z ~ Q relation curve is that the gate opening flow reaches the stable Z ~ Q curve, when the steady flow before reaching steady state