Developing a procedure to produce large-scale topographic maps of open-pit mines using rotary wing unmanned aerial vehicles

  • Affiliations:

    1 Hanoi University of Mining and Geology, Hanoi, Vietnam
    2 Thuyloi University, Hanoi, Vietnam
    3 Hanoi University of Natural Resources and Environment, Hanoi, Vietnam

  • *Corresponding:
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  • Received: 16th-Mar-2022
  • Revised: 30th-June-2022
  • Accepted: 31st-July-2022
  • Online: 31st-Oct-2022
Pages: 11 - 24
Views: 3447
Downloads: 2211
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Recently, the rapid development of unmanned aerial vehicle (UAV) has led to increasingly popular applications of this technology in the field of surveying and mapping. This article presents the result of developing a procedure to produce large-scale topographic maps for open-pit mines in Vietnam in which unmanned aerial vehicles (UAV) are used to collect data. With the goal of creating a procedure that ensures accuracy, safety, and efficiency for the production of topographic maps, the theories and official regulations for measuring and editing topographic maps in general and in mines in particular, as well as using drones in Vietnam have been applied. The procedure is specifically developed for the vertical takeoff and landing (rotary) UAVs. Experiments consisting of the flight altitude calculation, determining the appropriate take-off position, and image acquisition were conducted at two open-pit mines, namely Dong Da Mai coal mine and Long Son quarry to verify the procedure. The digital surface models (DSM) and orthophotos are generated from the acquired photos, georeferenced to the VN-2000 coordinate system using ground control points (GCP), and evaluated with checkpoints. In addition, the experiment included the investigation of the various combination of GCP networks to determine the optimal GCP number for each case. Experimental results show that the procedure is logical, correct, straightforward, safe, and effective. UAV resulted products, such as orthophotos, DSM, and topographic maps were accurate and met the requirements of all the national standards.

How to Cite
Nguyen, L.Quoc, Le, T.Thanh Thi, Le, C.Van, Cao, C.Xuan, Dang, M.Tuyet and Nguyen, D.Ba 2022. Developing a procedure to produce large-scale topographic maps of open-pit mines using rotary wing unmanned aerial vehicles (in Vietnamese). Journal of Mining and Earth Sciences. 63, 5 (Oct, 2022), 11-24. DOI:

Agisoft, (2019). Agisoft Metashape User Manual: Professional Edition, Version 1.5.

Agüera-Vega, F., Carvajal-Ramírez, F., Martínez-Carricondo, P., (2017). Accuracy of Digital Surface Models and Orthophotos Derived from Unmanned Aerial Vehicle Photogrammetry. Journal of Surveying Engineering, 143(2), 0401 6025. doi:10.1061/(ASCE)SU.1943-5428 000 0206.

ASPRS, (2015). New Asprs Positional Accuracy Standards for Digital Geospatial Data Released. Photogrammetric Engineering and Remote Sensing, 81(4), 277. doi:https://doi. org/10.1016/S0099-1112(15)30074-4.

Ministry of Industry and Trade, (2015). Vietnam Standard for Mine surveying, Vietnam National Standards. (in Vietnamese).

Ministry of Natural Resources and Environment, (2015). Circular 68/2015/TT-BTNMT: Technical regulation of direct topographic measurement for the establishment of topographic maps and geographic databases at scale 1:500, 1:1000, 1:2000, and 1:5000, Hanoi. (in Vietnamese).

Ministry of Natural Resources and Environment, (2021). Technical regulation on acquisition and processing of digital image data from unmanned aerial vehicle in service of construction, updating of National Geographic Database at scale 1:2,000, 1:5,000 and establishment of local maps at scale of 1:500 and 1:1,000, Hanoi. (in Vietnamese).

Bui, T.D., Nguyen Q.L., Bui, X.N., Nguyen, V.N., Pham, V.C., Le, V.C., Bjørn, K., (2017). Lightweight Unmanned Aerial Vehicle and Structure-from-Motion Photogrammetry for Generating Digital Surface Model for Open-Pit Coal Mine Area and Its Accuracy Assessment. International Conference on Geo-Spatial Technologies and Earth Resources, 17-33. 

Nguyen Kim Technology Joint Stock Company (2020). Topcon ES-105 total station, (in Vietnamese).

China, G. B., (2008). Specifications for aero-photogrammetric office operation of 1:500, 1:1.000, 1:2.000 topographic maps. China National Standardization Management Committee.

Cryderman, C., Mah, S.B., Shufletoski, A., (2014). Evaluation of UAV Photogrammetric Accuracy for Mapping and Earthworks Computations. Geomatica, 68(4), 309-317. doi: 10.5623/ cig2014-405.

DJI, (2017). DJI Phantom 4 Professional Visionary Intelligence Elevated Imagination. https://

DJI, (2020). Phantom 4 RTK Visionary Intelligence, 

Do, T.S., Nguyen. A.T., Hoang, H., Vo, T.L., Nguyen, N.T.V, Vo, V.T., Le, N.T.P., Pham, T.T.A., Dang, M.Q., (2019). Combines point cloud data from Terrestrial Laser scanning devices and unmanned aerial vehicles (UAVs) to collect building model information. Vietnam Construction Journal, 4, 39-42.  (in Vietnamese).

Jacobsen, K., (2005). Photogrammetry and geoinformation trends in large scale mapping. 

Le, V.C., Cao, X.C., Le, T.T.H., (2020a). Research on optimal takeoff positions of UAV intergrated GNSS-RTK in producing large scale topological maps for open - pit mines. Journal of Mining and Earth Sciences, 61(05), pp.54-63. (in Vietnamese).

Le, V. C., Cao, X. C., Nguyen, Q. L., Le, T. T. H., Tran, T. A., Bui, X. N., (2020b). Experimental Investigation on the Performance of DJI Phantom 4 RTK in the PPK Mode for 3D Mapping Open - Pit Mines. Journal of the Polish Mineral Engineering Society, 2, 65-74. doi: /IM-2020-02-10.

Lee, S., Choi, Y., (2015). Topographic survey at small-scale open-pit mines using a popular rotary-wing unmanned aerial vehicle (drone). Tunnel and underground space, 25(5), 462-469. 

Lee, S., Choi, Y., (2016). Reviews of unmanned aerial vehicle (drone) technology trends and its applications in the mining industry. Geosystem Engineering 19(4), 197-204. 

Martínez-Carricondo, P., Agüera-Vega, F., Carvajal-Ramírez, F., Mesas-Carrascosa, F.-J., García-Ferrer, A., Pérez-Porras, F.J., (2018). Assessment of UAV-photogrammetric mapping accuracy based on variation of ground control points. International Journal of Applied Earth Observation and Geoinformation, 72, 1-10. doi: 2018.05.015.

Nguyen, Q.L., (2021a). Reseach on propose the process of making large scale 1:2000, 1:1000 and 1:500 topographic maps for the topography of open pit mines in Vietnam on the basis of the application of low-cost UAV and conventional cameras. Ministry project, code B2020-MDA-14. (in Vietnamese).

Nguyen, Q.L., (2021b). Accuracy assessment of open-pit mine’s digital surface models generated using photos captured by Unmanned Aerial Vehicles in the post-processing kinematic mode. Journal of Mining and Earth Sciences 62(4), 38-47. 

Nguyen, Q.L., Goyal, R., Bui, K.L., Cao, X.C., Le, V.C., Nguyen, Q.M., Bui, X.N., (2021c). Optimal choice of the number of ground control points for developing precise DSM using light-weight UAV in small and medium-sized open-pit mine. Archives of Mining Sciences 66(3):369-384.

Nguyen, Q.L., Goyal, R., Le, V.C., Cao, X.C., Pham, V.C., Bui, N.Q., Bui, K.L., (2020a). Influence of Flight Height on The Accuracy of UAV Derived Digital Elevation Model at Complex Terrain. Inzynieria Mineralna, 45(1):179-187.

Nguyen, Q.L., Le, T.T.H., Tong, S.S., Kim, T.T.H., (2020b). UAV Photogrammetry-Based For Open Pit Coal Mine Large Scale Mapping, Case Studies In Cam Pha City, Vietnam. Sustainable Development of Mountain Territories, 12(4), 501-509. 

Nguyen, Q.L., Cao, X.C., (2019). Application of unmanned aerial vehicles (UAV) to build digital surface models and maps of quarry open pit mines. Journal of Mine Industry, 1(9). (in Vietnamese).

Sona, G., Pinto, L., Pagliari, D., Passoni, D., Gini, R., (2014). Experimental analysis of different software packages for orientation and digital surface modelling from UAV images. Earth Science Informatics, 7(2), 97-107. doi:10. 1007/s12145-013-0142-2.

Taddia, Y., Stecchi, F., Pellegrinelli, A., (2020). Coastal Mapping using DJI Phantom 4 RTK in Post-Processing Kinematic Mode. Drones, 4, 9. doi:10.3390/drones4020009.

Tomaštík, J., Mokros, M., Surovy, P., Grznárová, A., Merganič, J., (2019). UAV RTK/PPK Method - An Optimal Solution for Mapping Inaccessible Forested Areas. Remote Sensing, 11, 721. doi: 10.3390/rs11060721.

Vo, C.M, Nguyen, Q.L., (2014). Integrating pseudo-satellite and GPS/PPK contributes to improving the technical and economic efficiency of mapping and mapping open-pit mines deep down. Mining Industry, 4. (in Vietnamese). (in Vietnamese).

Vo, C.M., Vo, N.D., Nguyen, Q.L., Dinh, C.D., (2010). The possibility applying global positioning technology (GPS) to manage the operation of transport vehicles in open-pit mines in Vietnam, Journal of Mining Industry, 1. (in Vietnamese).

Xiang, J., Chen, J., Sofia, G., Tian, Y., Tarolli, P., (2018). Open-pit mine geomorphic changes analysis using multi-temporal UAV survey. Environmental earth sciences 77(6), 1-18.

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