摘要
高分辨率DEM数据是提高洪涝过程模拟精度的关键要素之一。围绕洪涝过程模拟,通过无人机载激光雷达技术与正射影像技术获取了样本城区与流域的DEM数据。基于此地形数据,采用水动力模型模拟了研究区域的洪涝过程,并对结果进行了验证与比较分析。结果表明,相比较于正射影像技术,无人机载激光雷达技术具有测量精度高的优势,可便捷生成高精度地形数据,在洪涝过程模拟中能够产生更为可靠的计算结果。
High-resolution DEM data is one of the key factors to improve the simulation accuracy of flood process. On the basis of flood process simulation,the DEM data of the sample urban areas and watersheds are obtained by unmanned airborne lidar technology and orthophoto technology. According to the topographic data,a hydrodynamic model is used to simulate the flood process in the study area. The results are verified and compared with the measured data. The results show that unmanned airborne lidar technology is a new way to acquire high-resolution DEM,which has the advantages of high measurement accuracy. It can easily generate high-precision topographic data and produce more reliable calculated results in flood simulation.
作者
杨东
侯精明
张兆安
王兴桦
李昌镐
白岗岗
陈文军
付德宇
YANG Dong;HOU Jingming;ZHANG Zhaoan;WANG Xinghua;LI Changhao;BAI Ganggang;CHEN Wenjun;FU Deyu(State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China,Xi’an University of Technology,Xi’an 710048;Office ofShaanxi Provincial Flood Control and Drought Relief Headquarters,Xi’an 710004;Beijing Capital CO. LTD,Beijing 100028)
出处
《中国防汛抗旱》
2019年第8期25-29,共5页
China Flood & Drought Management
基金
国家自然科学基金项目(19672016)
陕西省国际科技合作交流计划项目(2017KW-014)
陕西省水利科技项目(Grand No.2017slkj-14)
秦岭及宁东矿产资源集中开采区地质环境调查项目(DD20160336)
