Effects of Spacing-to-Burden Ratio and Joint Angle on Rock Fragmentation: An Unmanned Aerial Vehicle and AI Approach in Overburden Benches
Journal Title: Acadlore Transactions on Geosciences - Year 2023, Vol 2, Issue 3
Abstract
In quarrying and mining operations, the results of the blasting process profoundly influence subsequent processes. Two primary categories dictate blast outcomes: controllable and non-controllable factors. For optimal fragmentation, it's pivotal that controllable variables, notably blast geometry and explosive attributes, are meticulously planned in correlation with non-controllable ones, such as geological aspects. In this study, the influence of blast design parameters on rock mass was investigated by examining the observable characteristics of joints and bedding planes on rock surfaces. Information extraction from these discontinuities was facilitated through cloud data processing. Within the scope of the research, 12 synchronized blasts were executed in the Basanth Nagar Limestone Mine (BNLM), tailored to its inherent joints. Results indicated that the spacing-to-burden ratio, powder factor, and joint angle significantly influenced the mean fragment size. An inverse relationship was observed between the spacing-to-burden ratio and the mean fragment size; optimal ratios for superior fragmentation were found between 1.25 and 1.3. Joint angles ranging between 75° and 80° were associated with optimal fragmentation, whereas angles exceeding 80° yielded larger rock boulders. Effective powder factors ranged from 0.36 to 0.47, with the necessity of the powder factor for rock fracturing being heavily dependent on the joint angle of the rock.
Authors and Affiliations
Dasyapu Ramesh, Nidumukkala Sri Chandrahas, Musunuri Sesha Venkatramayya, Malothu Naresh, Pradeep Talari, Dhangeti Uma Venkata Durga Prasad, Kannavena Sravan Kumar, Vasala Vinod Kumar
Keywords
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- EP ID EP732842
- DOI 10.56578/atg020303
- Views 43
- Downloads 0
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