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作者通过实践,提出了一种比较准确、可靠、经济、便捷的制造水工试验用地形模型的科学方法——用模型砖模拟等高线制作地形模型法。并在广西西江铜鼓滩水利水电工程坝下游30米段230m~21/100地形模型制作中使用获得园满成功。文中系统介绍了此法的原理、精度、设备、工艺和技术经济可行性,并附有制成的铜鼓滩地形模型等高线全貌照片。本文还首次使用半概率法分析研究了地形模型的精度问题,提出了模型制作精度与地形图精度、量图精度的协调关系式及模型制作控制误差计算公式,并给出了常用模图比的地形模型控制误差的数值。
Through practice, the author put forward a scientific method of making terrain model for hydraulics experiment more accurately, reliably, economically and conveniently - making terrain model method by simulating contour line with model brick. It was successfully used in the 230m ~ 21/100 terrain model production 30m downstream of the Tonggu drum water conservancy and hydropower engineering dam in Guangxi. This paper systematically introduces the principle of this method, accuracy, equipment, technology and technical feasibility of the economy, with the completed contour map of the Tonggu Beach terrain model photos. For the first time, the semi-probabilistic method is also used to analyze and study the accuracy of the terrain model. The coordination relation between the accuracy of the model making and the precision of the terrain map and the accuracy of the gradiometric map is proposed. The formula for calculating the control error of the model is given. Topographic model control error value.