摘要
我国小型水库数量众多,是调控水资源分配的重要基础设施。为了精确测量水库周边地形以及计算库容,本文提供了一套完整的测算方法。首先,采用机载摄影测量与激光雷达采集库岸数据,用无人船采集水下地形数据。然后,进行数据处理并提出了一种三角网精确分割库容计算算法。该方法对测量点云数据建立三角网,并对三角网中每一个三角形进行判断,通过对三角形中每一个点的高程与水平面高程进行对比,分为一点小于水平面高程、两点小于水平面高程、三点小于水平面高程3种类型,分别计算体积并进行累加获得不同高程值的库容量。最后,基于C++开发了库容精确计算程序。将本文算法与等高线法计算的库容进行对比,两者的误差小于2%,且其中多数小于1%。本文研究可为小型水库库容的精确测算提供技术支持。
There are a large number of small reservoirs in China,which are important infrastructure for regulating and controlling the allocation of water resources.In order to accurately measure the topography around the reservoir and calculate the reservoir capacity,this paper provides a complete set of calculation methods.Firstly,airborne photogrammetry and LiDAR are used to collect reservoir and shore data,and unmanned ships are used to collect underwater terrain data.Then,the data processing was carried out and a calculation algorithm for the capacity of the triangular network was proposed.By comparing the elevation of each point in the triangle with the elevation of the horizontal plane,the method is divided into three types:one point is less than the elevation of the horizontal plane,two points are less than the elevation of the horizontal plane,and three points are less than the elevation of the horizontal plane.Finally,based on C++,an accurate calculation program of storage capacity was developed.Compared with the storage capacity calculated by the contour method,the error of the algorithm is less than 2%,and most of them are less than 1%.This study can provide technical support for the accurate estimation of the reservoir capacity of small reservoirs.
作者
崔周烽
蔡来良
袁占良
郭艺帆
张冰洁
CUI Zhoufeng;CAI Lailiang;YUAN Zhanliang;GUO Yifan;ZHANG Bingjie(School of Surveying and Land Information Engineering,Henan Polytechnic University,Jiaozuo 454003,China;Shanghai Huace Navigation Technology Co.,Ltd.,Shanghai 200000,China)
出处
《测绘通报》
CSCD
北大核心
2024年第S02期17-21,36,共6页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(41701597)
中国博士后科学基金(2018M642746)
关键词
小型水库
库容曲线
三角网
等高线
small reservoirs
storage capacity curve
triangulation
contour
