Transportation costs: A tool for evaluating the effect of rock mass mechanical parameters on blasting results in open pit mining

Taherkhani, Hamidreza; Doostmohammadi, R.

doi:10.1134/s1062739115040103

Cited by 8 publications

(7 citation statements)

References 7 publications

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“…Furthermore, the efficiency and cost of mining activities are also related to the rock mass mechanical parameters such as RQD, compression strength, joints, discontinuities, etc. The quality, particle size distribution, swell factor and the geometry of the blasted material influence the efficiency of loading and hauling activities (Taherkhani and Doostmohammadi 2015).…”

Section: Loading and Haulingmentioning

confidence: 99%

A system-wide approach to minimize the operational cost of bench production in open-cast mining operations

Ozdemir

Kumral

2018

Int J Coal Sci Technol

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The production cycle of open-cast coal mines generally includes drilling, blasting, loading, hauling and coal preparation activities. Individual optimization of these activities does not mean that the whole system is optimized. This paper proposes a cost model considering all activities in mining cycle and system-wide approach to minimize the total mining cost of bench production. Since the fragmentation size and blast-hole diameter are linked to all activities of mining system, they are considered as decision variables in the problem formulation. The operation costs are then minimized by using the evolutionary algorithm. Moreover, the impact of the change in the explosive price, and the hourly unit cost of equipment on total mining cost is quantified by sensitivity analysis. A case study is implemented to demonstrate the developed model.

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Section: Loading and Haulingmentioning

confidence: 99%

A system-wide approach to minimize the operational cost of bench production in open-cast mining operations

Ozdemir

Kumral

2018

Int J Coal Sci Technol

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“…In the field of engineering blasting, the blasting effect is directly influenced by the inhomogeneity of the interlaced composite rock mass of soft rock and hard rock 7 , 8 . In soft and hard rock formations, the blasting process is more complicated because blasting stress waves need to penetrate two kinds of rocks with different physical properties and natural joint surfaces in the rocks.…”

Section: Introductionmentioning

confidence: 99%

The law of blast stress wave propagation and fracture development in soft and hard composite rock

Ding

Yang

Zhou

et al. 2022

Sci Rep

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The process of blasting stress wave propagation and crack propagation is directly affected by the physical properties of the rock mass and internal joints in the rock. In soft and hard rock layers, the blasting process is more complicated since the blasting stress wave needs to penetrate two kinds of rocks with different physical properties and the interface between soft rock and hard rock. In this study, the modal transformation of stress waves at the interface of layered composite rock was analyzed, and the process was reproduced by finite element analysis. Furthermore, the development law of cracks was explored. The research results demonstrated that in the single blasting-hole model, a triangular crack area caused by reflected stress waves appeared at the rock interface of rock medium I near the blast hole. In rock medium II, the tensile crack generated by the interface wave appeared on the side away from the blast hole. Besides, the development of the tensile crack was associated with the incident mode of the blast stress wave and the incident angle. In the deep hole blasting model, the incidence of the detonation wave front from hard rock to soft rock promoted the fragmentation of the hard rock.

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“…In the eld of engineering blasting, the inhomogeneity of the interlaced composite rock mass of soft rock and hard rock directly affects the blasting effect 7,8 . In soft and hard rock formations, the blasting process is more complicated because blasting stress waves need to penetrate two kinds of rocks with different physical properties and natural joint surfaces in the rocks.…”

Section: Introductionmentioning

confidence: 99%

The law of blast stress wave propagation and fracture development in soft and hard composite rock

Ding

Yang

Zhou

et al. 2022

Preprint

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The process of blasting stress wave propagation and crack propagation is directly affected by the physical properties of the rock mass and internal joints in the rock. In soft and hard rock layers, the blasting process is more complicated due to the blasting stress wave needs to penetrate two kinds of rocks with different physical properties and the interface between soft and hard rock. This study analyzed the modal transformation of stress waves at the interface of composite stratified rock and the process was reproduced by finite element analysis. Further, development law of cracks was also been studied. The research results show that: In the single blasting-hole model, a triangular crack area caused by reflected stress waves appears at the rock interface of rock medium I near the blast hole. In the rock medium II, the tensile crack generated by the interface wave appeared on the side away from the blast hole. And the development of the tensile crack is related to the incident mode of the blast stress wave and the incident angle. In the deep hole blasting model, the incidence of the detonation wave front from hard rock to soft rock promote to the fragmentation of the hard rock.

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Transportation costs: A tool for evaluating the effect of rock mass mechanical parameters on blasting results in open pit mining

Cited by 8 publications

References 7 publications

A system-wide approach to minimize the operational cost of bench production in open-cast mining operations

A system-wide approach to minimize the operational cost of bench production in open-cast mining operations

The law of blast stress wave propagation and fracture development in soft and hard composite rock

The law of blast stress wave propagation and fracture development in soft and hard composite rock

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