Application research of multi-beam bathymetric and UAV aerial technology on mountain reservoir capacity measurement

摘要

The reservoir capacity curve is important to maximize the utilization of water resources and effective reservoir management. The reservoirs in Zhejiang Province generally locate in mountainous area, and it is difficult to obtain DEM of area above water level by conventional measurement method. UAV technology was applied to obtain DEM of area above the water surface, and multi-beam bathymetric technology was used to obtain high-density and more precision DEM of area underwater. The reservoir capacity curve was obtained by using the underwater DEM combined with the land terrain data above water. The case study in Tongjiqiao reservoir of Pujiang County, Zhejiang Province, proved that the method could be a reliable solution for mountainous reservoir capacity measurement, characterized in high efficiency and guaranteed surveying accuracy, meanwhile, overcome the difficulty of manual surveying on the steep banks.