Open AccessGeological hazard interpretation and hazard evaluation of open pit mines based on Unmanned Aerial Vehicle images
Author(s) -
Jianxiong Ma,
Jiwen Liu,
Ming Jiang,
Xuejia Sang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2006/1/012072
Subject(s) - geohazard , geologic hazards , landslide , geology , mining engineering , hazard , lithology , zoning , hazard map , hazard analysis , elevation (ballistics) , rockfall , geologic map , physical geography , seismology , geomorphology , geography , civil engineering , geochemistry , chemistry , geometry , mathematics , organic chemistry , engineering , aerospace engineering
Over-exploitation of open-pit mines has caused extensive development of geological hazards, posing serious threats to people and buildings in the area. Based on the UAV tilt-tilt photography technology, this paper generates a real-world 3D model of the study area, taking the molybdenum mine of Songshumao in Yangjiajiaozi, Xingcheng City, Liaoning Province as an example, and combines orthophotography, high-precision DEM data and field geological survey research to establish a geohazard interpretation marker for the study area and interpret various types of geohazards such as landslides, landslides, dangerous rocks, ground cracks and unstable slopes in the study area. Based on the hierarchical analysis method combined with the geological environment characteristics, the geological hazard risk evaluation model and index system were established, and five indexes were selected, including geological hazard range, stratigraphic lithology, slope, elevation, vegetation coverage, etc. The study area was divided into high, medium and low risk zones, and the geological hazard risk zoning map was obtained to complete the geological hazard risk evaluation of the study area.