摘要
利用数字化地形图建立数字高程模型(DEM)量算水库水面面积和库容,确定水位-库容关系曲线是一种比较先进的技术方法。为了检验该方法的适应性和精度,利用鸭河口水库的资料,在简要介绍GeoHydrology地形法、等高线面积法、测点构网法和DEM法原理的基础上,将等高线面积法的人工量算与计算机量算、计算机量算与DEM法量算和测点构网法与DEM法的量算结果进行了综合比较分析。分析结果表明:DEM法完全适应库容量算的要求,且简便易行,量算精度较高。
Measuring the water surface area and capacity of a reservoir with DEM built by digital topographic maps and determining the relationship between water level and capacity is a kind of advanced technology. In order to analyze the adaptability and accuracy of the method, by utilizing the data of Yahekou Reservoir and based on the brief introduction to the principles of contour area method, measuring - point network constructing method and DEM method, this paper comprehensively compares and analyses the calculation results between manpower calculation and computer calculation by using contour area method, computer calculation and DEM calculation, measuring - point network constructing method and DEM method. The comparison and analysis resuits show that DEM is fully qualified for reservoir capacity calculation and the calculation is simple and convenient with high accuracy.
出处
《人民长江》
北大核心
2014年第15期36-38,62,共4页
Yangtze River
关键词
DEM法
水面面积量算
库容量算
适应性分析
精度分析
鸭河口水库
DEM method
water surface calculation
reservoir capacity calculation
adaptability analysis
accuracy analysisYahekou Reservoir
