前言在水库养鱼过程中,由于灌溉、发电、溢洪,会出现大量逃鱼的情况,严重影响了养鱼的经济效益。为此,在逃鱼的道口敷设拦鱼网设备,对水库养鱼十分重要。为了能正确设计和顺利地安装拦鱼网设备,就必须提供一张完整的拦鱼网所处位置的水层断面图,而断面图的获得一般都需要进行实地的测绘。本文以水库拦鱼网断面的测绘方法为例,利用超声波测深仪,可简便、迅速、而又精确地测出水库任意断面的水深数据,在此基础上就能正确地绘制出设计拦鱼网所需的断面图。 Introduction During the process of fish farming in reservoirs, a large number of fish will be evacuated due to irrigation, power generation and flood spill, seriously affecting the economic benefits of fish farming. Therefore, it is very important for the fish culture in the reservoir to lay out the fish net equipment at the crossing of the fishing line. In order to correctly design and successfully install the equipment of the fish net, it is necessary to provide a complete cross-sectional view of the water layer where the fish net is located, and the cross-sectional drawings generally need to be field-mapped. In this paper, an example of surveying the cross-section of the reservoir-fishing net is shown. By using the ultrasonic sounder, the depth data of an arbitrary cross-section of the reservoir can be measured easily and quickly. On this basis, Required section.