测准洪水是目前水文测验工作中最艰难最重要的任务之一,其中尤以测船操纵问题是一个重要关键。为此本年二月我站就开始架设了一道横河缆,在缆上装置一滑车牵引测船,使其可以顺横缆方向移动,逐点进测,以缩短测验时间、固定测线位置。经过五个月的不断改进,已初步解决了这个问题,兹将经过情况和我们的分析说明如下: Flooding is one of the most difficult and most important tasks in hydrological tests at present, and the problem of vessel survey and control is an important issue. To this end, in February this year, I started to set up a Yokogawa station and installed a trolley towed surveyor on the cable so as to be able to move in the direction of the transverse cable. The test was conducted point by point to shorten the test time and fix the position of the survey line . After five months of continuous improvement, this issue has been initially solved. We will explain the situation and our analysis as follows: