马口水文站洪水期CM 600流量计应用分析

对马口水文站CM 600流量计的应用进行了探讨。通过对高洪期间含沙量对流速精度的影响进行分析,提出洪水期与潮汐期使用不同流速层流速的平均值作为代表流速定线推流的方法,与连时序法对比精度满足要求,较好地解决了原有岸边安装的SL500流量计洪水期流速代表性差、脉动严重等问题。

Analysis and Reasearch of CM 600 Floodmeter during Flood Period in Makou Hydrometric Station

A discussion is given of the application of CM600 flowmeter at Makou Hydrometric Station. The effect of sedimentation concentration upon the precision of water velocity measurement is analyzed for the high-water period. From this analysis it is suggested to use, for the flood period and the tidal period, a different mean velocity computed from different velocity layers as a representative velocity in determining stage-discharge relation curve to estimate the flow rate. This approach produces a satisfactory precision, as testified by the chronological method, and thus provides a solution to the flood period problems of poor representative and gross pulsation, among others, with the SL500 flowmeters installed on the bank.