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

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Tác giả: Viết Nghĩa Nguyễn

Ngôn ngữ: Vie

Ký hiệu phân loại:

Thông tin xuất bản: Journal of Mining and Earth Sciences, 2020

Mô tả vật lý:

Bộ sưu tập: Metadata

ID: 419484

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Tóm tắt
Chủ đề

Sử dụng tư liệu máy bay không người lái (UAV) trong thành lập mô hình 3D được sử dụng rộng rãi trong những năm gần đây. Tuy nhiên, xây dựng mô hình 3D cho các mỏ lộ thiên khai thác xuống sâu có chênh cao giữa bề mặt và đáy mỏ lên đến trên 500 m thì vẫn chưa có nghiên cứu nào đề cập. Mục tiêu của bài báo là đánh giá khả năng xây dựng mô hình 3D cho các mỏ lộ thiên khai thác xuống sâu từ dữ liệu ảnh UAV. Để thực hiện mục tiêu này, thiết bị bay Inspire 2 của hãng DJI được sử dụng để bay chụp mỏ khai thác than Cọc Sáu. Diện tích bay chụp là 4 km2, độ cao bay chụp so với điểm cất cánh trên bề mặt mỏ là 250m, độ chồng phủ ảnh theo cả chiều ngang và dọc là 70%. Sai số trung bình các thành phần mặt bằng và độ cao của các điểm nắn ảnh tương ứng là 0,011 m, 0,017 m, 0,016 m, 0,049 m, và 0,051 m. Sai số lớn nhất theo trục X là - 0,025 m và trục Y là 0,028 m, sai số tổng hợp mặt bằng theo cả trục X và Y lớn nhất 0,034 m, sai số lớn nhất theo trục Z là 0,095 m và sai số tổng hợp theo vị trí điểm XYZ là 0,095 m. Các kết quả này cho thấy mô hình 3D được thành lập từ dữ liệu ảnh chụp bằng thiết bị Inspire 2 đáp ứng tốt yêu cầu về độ chính xác thành lập bản đồ địa hình khai thác tỷ lệ 11000., Tóm tắt tiếng anh, Using photo data of unmanned aerial vehicle (UAV) for building 3D models has been widely used in recent years. However, building a 3D model for deep open - pit coal mines with the mean height difference between surface and bottom of mines to over 500 m, there has not been researched mentioned. The paper deals with the assessment possibility of 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 at Coc Sau coal mine. The flying area is 4 km2, the flight altitude compared to the takeoff point on the mine surface is 250 m, the overlaying coverage is both horizontal and vertical is 70%. The average errors of the horizontal and height elements of the reference points photo correlates are 0.011 m, 0.017 m, 0.016 m, 0.049 m, and 0.051 m. The maximum error on the X-axis is - 0,025 m, and the Y-axis is 0.028 m, the maximum horizontal error is 0.034 m, the maximum error on the Z-axis is 0.095 m, and the position error is 0.095 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.

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