水文測驗工作中最感困難的問題,是流速仪不能垂直下测。由於水溜的冲激,使测繩成一偏斜弧形,不能按预定深度安置儀器,以致所得测點流速的代表性受到了影响。我們為了克服上述缺點,研究讨论摸索試驗,結果流速仪懸桿吊测的方法成功了。这个方法主要是将连接流速仪的繩纜换為用 The most difficult problem in hydrological tests is that the flow meter can not measure vertically. Due to the slip of the water, the ropes become a skewed arc and the instrument can not be placed at a predetermined depth, so that the representativeness of the resulting measured flow velocity is affected. In order to overcome the above shortcomings, we studied and discussed the groping test. This method is mainly used to connect the current meter rope replaced