Application of UAV airborne LiDAR technology in Karst identification of pumped storage power station reservoir area

doi:10.13474/j.cnki.11-2246.2023.0115

Abstract

Abstract: In the Karst mountain area of southwest China, the vegetation is dense and the terrain is steep. The traditional ground Karst investigation methods are inefficient and dangerous. In this paper, the airborne LiDAR technology is used to obtain the laser point cloud and optical image data of the reservoir area of a pumped storage power station in Sichuan, and combined with the indoor interpretation and field review, regional Karst identification is carried out. The development and distribution of Karst in the reservoir area are found out, which can be divided into Karst funnel, Karst depression and sinkhole according to the Karst morphology. Based on the existing data and LiDAR data results, the elevation, slope, aspect, structure, lithology and catchment area factors of the reservoir area are extracted, and the distribution law of Karst development is analyzed. The results show that the UAV airborne LiDAR technology can accurately and quickly identify the Karst distribution characteristics in the reservoir area of the pumped storage power station, and provide a new technical means for the early survey and design of the power station.

Key words: airborne LiDAR, pumped storage power station, Karst identification, development feature

CLC Number:

P237

ZHENG Peng, WEI Xingcan, LI Ning, LI Qiang, CHEN Jiangpan. Application of UAV airborne LiDAR technology in Karst identification of pumped storage power station reservoir area[J]. Bulletin of Surveying and Mapping, 2023, 0(4): 121-127.

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