Determination of specific charge minimizing total unit cost of open pit quarry blasting operations

Tosun, Abdurrahman; Konak, G.

doi:10.1007/s12517-014-1657-7

Cited by 17 publications

(5 citation statements)

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“…Maximizing the efficiency of blasting is essential since well-fragmented rocks increase the productivity of loading, hauling, crushing, and grinding, reduce the wear of the equipment, and lower the energy demand of loading (Tosun and Konak 2014).…”

Section: Drilling and Blasting 3111 Overview Technical Challengesmentioning

confidence: 99%

Energy demand and savings opportunities in the supply of limestone and olivine-rich rocks for geochemical carbon dioxide removal

Marco,

Caserini,

Amann

et al. 2024

Environ. Res. Lett.

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The large-scale implementation of geochemical Carbon Dioxide Removal (CDR) approaches such as Enhanced Weathering (EW) and Ocean Liming (OL) will require the extraction and processing of large amounts of limestone and olivine-rich rocks. Based on a literature review, surface mining, comminution, their related sub-stages, and long-haul transportation have carefully been surveyed to elucidate the order of magnitude of the energy demand, the technical challenges posed by each operation, and the potential energy-savings achievable by applying opportune strategies. This work confirms the significant energy-saving opportunities in fine and ultrafine grinding (one of the most energy-consuming activities along the raw material supply chain) as underlined by previous studies, and, in addition, it focuses on limestone and olivine-rich rocks providing new outcomes, it analyses data from a climate change perspective and extends calculations and discussion to transportation. The results show that the implementation of energy-saving strategies (cutting-edge energy efficiency solutions and best practices) to comminute such materials for OL and EW purposes in the near-medium term (2025-2050) would reduce the average electricity demand by 33%-65% in case of low carbon removal target (up to 27 MtC/yr) and substantial energy efficiency improvement, and by 33-36% in case of high carbon removal target (up to 69 MtC/yr) and poor energy efficiency improvement.

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Section: Drilling and Blasting 3111 Overview Technical Challengesmentioning

confidence: 99%

Energy demand and savings opportunities in the supply of limestone and olivine-rich rocks for geochemical carbon dioxide removal

Marco,

Caserini,

Amann

et al. 2024

Environ. Res. Lett.

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“…They discovered that variations in hole diameter size had no effect on the e ciency of in-hole velocity of detonation (VoD), as determined by oversize boulder number counting. Tosun and Konak (2015) mentioned in their study that better fragmentation consists of fewer oversize fragments.…”

Section: Introductionmentioning

confidence: 99%

Practical Guidelines for Utilizing WipFrag Software to Assess Oversize Blast Material Using Both Orthomosaic and Digital Images

Taiwo,

Palangio,

Savaliya

et al. 2024

Preprint

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Oversize material resulting from blasting presents a notable drawback in the transportation of run-off-mine material due to increased expenses associated with handling, decreased efficiency in loading, and greater wear on digging equipment. Its irregular size and weight demand additional resources and time for secondary breakage, impacting overall productivity and profitability. This paper addresses the limitations of interpreting image analysis software results and applying them to the assessment of blast-generated oversize materials. This comprehensive guide utilizes both orthomosaic and digital photos to provide critical approaches for optimizing fragmentation analysis and improving decision-making in mining operations. It briefly covers post-blast assessment, blast block heat map interpretation, and material loading decision-making recommendations.

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“…The aforementioned studies indicate that the specific charge is a crucial parameter in boulder blasting. Although specific charges in ordinary blasting have been studied in numerous publications [6,14,[20][21][22][23][24][25][26][27][28], results from ordinary blasting cannot be directly applied to determine a proper specific charge in boulder blasting. Accordingly, the specific charge and size distribution of fragments in boulder blasting by using model blasts were studied in this paper.…”

Section: Introductionmentioning

confidence: 99%

Preconditioning High-Strength Boulders for TBM Tunnelling by Ground Drilling and Blasting

Zhang,

Yang

et al. 2024

Buildings

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A spherical weathering body, also called a boulder, is an element of complex geological strata and presents a significant challenge to tunnelling by a tunnel-boring machine (TBM). In this study, ground-based drilling and blasting were used to precondition boulders. To determine the specific charge needed for preconditioning blasting, model blasts were conducted, and the relationships among the specific charge, fragment size, and overburden depth in the model blasts were investigated. The determined specific charge from the model blasts was then modified by considering the overburden depth and used to precondition the boulders for practical TBM tunnelling. The results indicate the following: (1) model blasts were effective in determining the correct specific charge and predicting boulder fragment sizes resulting from blasting; (2) the boulders met in practical TBM tunnelling were successfully preconditioned by using the determined specific charge; (3) the determined specific charge was 3.26 kg/m3, corresponding to an average fragment size 4.5 cm with an overburden of zero and increased with increasing overburden; (4) fragment sizes were dependent on both the specific charge and overburden depth. Our conclusions can be used to accurately determine the specific charge instead of empirical formulas.

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Determination of specific charge minimizing total unit cost of open pit quarry blasting operations

Cited by 17 publications

References 0 publications

Energy demand and savings opportunities in the supply of limestone and olivine-rich rocks for geochemical carbon dioxide removal

Energy demand and savings opportunities in the supply of limestone and olivine-rich rocks for geochemical carbon dioxide removal

Practical Guidelines for Utilizing WipFrag Software to Assess Oversize Blast Material Using Both Orthomosaic and Digital Images

Preconditioning High-Strength Boulders for TBM Tunnelling by Ground Drilling and Blasting

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