Abstract:
With the advancement of various techonlogies during last two decades, processing
power of computers and software development, accuracy in Geographical
Positioning System (GPS), photogrammetry with high resolution digital camera,
cloud computing, application of Unmanned Aerial Vehicle (UAV) in mining
application is providing benefits. Blasting is one of the critical operation in any
excavation system in mining, was dependent on conventional methods of analysis
till new technologies made in-roads in last few decades period. Digitised Terrain
Models (DTM) are developed based on images captured of mine terrain and mine
faces(as a part of pre-blast and post-blast situations). With mobile phone application
vis-a-vis App based, real charge per hole, 2D/3D view of borehole patterns,
geometric paramters, real coordinates of blast location and boreholes and presence
of water in individual borehole can be recorded. For measurement of blast
fragmentation, UAV is flown on blasted muckpile with video recording of images.
Blast fragmentation photographs are analysed using image analysis software.
Photographs are useful to calculate blasted rock volume. This paper describes two
case studies. In one of aggregate (granite) quarry in Malaysia, with the help of UAV
aerial phographs were obtained to identify rock types and geological structures
which improved blast design. In another case study, in photgrapghs of blasted
muckpile are taken manually in limestone quarry. Results of blast fragmentation
prediction by software Vs image analysis are discussed in this paper.
Citation:
Miranda, V., Bhatawdekar, R.M., Leitei, F., Gupte, A., Sobral, R., Edy, T.M., & Pradhan, G.K. (2018). UAV application for blast design and fragmentation analysis. In A.M.K.B. Abeysinghe & G.V.I. Samaradivakara (Eds.), Proceedings of International Symposium on Earth Resources Management & Environment 2018 (pp. 13-19). Department of Earth Resources Engineering, University of Moratuwa.