给水管网运行状态参数的推定

DETERMINATION OF STATE PARAMETERS OF WATER DISTRIBUTION PIPE NETWORKS IN VORKING ORDER

在给水管网控制管理与扩建设计之际,了解运行管网的各状态参数的变动情况是很有意义的。如何利用少量的量测数据来推算其他参数,是目前尚未解决的实际问题。本文提出了在测定节点水头的前提下,利用个别节点流出水量变化,其他节点流出水量可保持基本不变的特点,推定各管路系数与节点流量的理论分析计算方法,并运用计算机模拟试验来加以验证。结果表明:当实测数据精度较好时,推定值和真值非常符合,初步证明了该方法的正确性和可行性。

It is of great significance to know the variations of state parameters in the process of controlling,management and extension of water distribution pipe networks,and the problem of how to estimate the parameters with a little measured data still remains unsolved.This paper presents a calculation method of network coefficients and node discharges with the precondition that the water head of every node is being measured and that discharges of other nodes remains basically constant while that of one node is changing.Results of computer simulation testing show that the calculated values are in good correspondence with the real ones when the data— measuring is precise enough.