Xây dựng mô hình số độ cao cho mỏ lộ thiên có độ sâu lớn từ dữ liệu ảnh chụp bằng thiết bị bay Inspire 2

Mục tiêu chính của nghiên cứu này là đánh giá độ chính xác DEM thành lập từ phương pháp đo ảnh máy bay không người lái UAV cho địa hình mỏ lộ thiên khai thác sâu. | Journal of Mining and Earth Sciences Vol. 61 Issue 1 2020 1 - 10 1 Building DEM for deep open-pit coal mines using DJI Inspire 2 Nghia Viet Nguyen Faculty of Geomatics and Land Administration Hanoi University of Mining and Geology Vietnam ARTICLE INFO ABSTRACT Article history Using photo data of unmanned aerial vehicle UAV for building 3D Received 15th Nov 2019 models has been widely used in recent years. However building a 3D Accepted 6th Jan. 2020 model for deep open - pit coal mines with the mean height difference Available online 28th Feb. 2020 between surface and bottom of mines to over 500 m there has not been Keywords researched mentioned. The paper deals with the assessment possibility of Deep open-pit mine developing 3D models for deep open - pit mines from UAV image data. To accomplish this goal DJI s Inspire 2 flying device is used to take the photo Digital Elevation Model at Coc Sau coal mine. The flying area is 4 km2 the flight altitude compared Inspire 2 to the takeoff point on the mine surface is 250 m the overlaying coverage Unmanned aerial vehicle. is both horizontal and vertical is 70 . The average errors of the horizontal and height elements of the reference points photo correlates are m m m m and m. The maximum error on the X-axis is - 0 025 m and the Y-axis is m the maximum horizontal error is m the maximum error on the Z-axis is m and the position error is m. These results show that the 3D model established from photographic data by Inspire 2 device has satisfied the requirements of the accuracy of establishing the mining terrain map 1 1000 scale. Copyright 2020 Hanoi University of Mining and Geology. All rights reserved. ___________ Corresponding author E-mail nguyenvietnghia@ DOI 1 .01 2 Tạp chí Khoa học Kỹ thuật Mỏ - Địa chất Tập 61 Kỳ 1 2020 1 - 10 Xây dựng mô hình số độ cao cho mỏ lộ thiên có độ sâu lớn từ dữ liệu ảnh chụp bằng thiết bị bay .