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一、概述为测定过闸流量,通常在闸桥上进行闸孔测流.闸孔测流比较方便,可省去缆道和过河索的架设、维修,但也存在一些问题,有待改进.目前闸孔测流的方法,多采用移动式的绞车,悬索悬吊流速仪,逐孔、逐线、逐点施测流速.其缺点是:劳动强度大、测验速度慢,特别是受潮汐影响的河流,潮水位变化很快,施测过程中水位和流量都已变化,其资料的代表性也就很差.因此,怎样缩短测流历时,提高资料的代表性,是闸孔测流需要解决的问题之一.
I. Overview In order to measure the flow of overrun, gate flow measurement is usually carried out on the gate. The gate flow measurement is more convenient, which can save the installation and maintenance of the cableway and river crossing, but there are some problems to be improved. Current gate flow measurement method, the use of mobile winch, suspended suspension flow meter, hole-by-hole, line by line, the measured flow rate point by point.The disadvantage is: labor-intensive test speed is slow, especially by the tide Affected rivers, tidal level changes rapidly, the water level and flow rate have changed during the test, the representative of the information is also very poor.Therefore, how to shorten the flow measurement duration, to improve the representativeness of the data is the gate flow measurement One of the problems to be solved.