Environmentally sustainable mining through proper selection of explosives in blasting operation

Khademian, Amir; Bagherpour, Raheb

doi:10.1007/s12665-017-6483-2

Cited by 27 publications

(7 citation statements)

References 17 publications

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“…It was found that the decoupled charge structure with EPS could increase the peak burst stress for a decoupling coefficient in the range of 1.75 < α < 2.05 (see Figure 9), which is similar to the research reported by Yang et al [21] (2.5 < α < 2.35), but the decoupling coefficient range is different. Yang et al [21] chose a polycarbonate material (with a modulus of elasticity of 4.548 GPa, Poisson's ratio of 0.321, and density of 1449 g/ cm 3 ) and concrete (modulus of elasticity of 24.5 GPa, Poisson's ratio of 0.23, and density of 2100 g/cm 3 ) as the model specimen materials; the different physical parameters of the two model specimens resulted in a difference in the range of the decoupling coefficient.…”

Section: Filling Mediummentioning

confidence: 99%

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Influence of Decoupled Charge Structure and Filler on the Blasting Effect

Zhang

Luo

Wan

et al. 2020

Shock and Vibration

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This study compared models of specimens with different filler media and decoupled charge structures in terms of the blasting effect. The test system combined a high-speed camera and high-speed static strain test analyzer. A physical model of a concrete single-borehole decoupled charge structure was designed to study the geometric elements of the blasting funnel, flyrock launch velocity, peak strain values, and distribution of the gravel lumpiness. The experimental results showed that for the same decoupling coefficient, when expandable polystyrene foam (EPS) was used as the filling medium, the radius, depth, and volume of the blasting funnel of the model specimen were larger, the flyrock launch velocity was slower, the peak stress of the specimen was higher, and the distribution of gravel lumpiness was more even. The relationship between the experimental index and the decoupling coefficient follows the changing trend of first increasing and then decreasing or first decreasing and then increasing. With air and EPS as the filling media, the concrete model specimens could achieve optimal blasting effects at decoupling coefficients of 1.83 and 1.69, respectively. The results confirm the feasibility and practicability of using EPS as a filler and can provide guidance and an experimental basis for the selection of the decoupling coefficient and filling medium in blasting engineering.

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Section: Filling Mediummentioning

confidence: 99%

“…Drilling and blasting can efficiently crush rock media and are used in civil applications such as mining [1][2][3] and tunnel construction [4,5].…”

Section: Introductionmentioning

confidence: 99%

Influence of Decoupled Charge Structure and Filler on the Blasting Effect

Zhang

Luo

Wan

et al. 2020

Shock and Vibration

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“…Th SkyeRead Mini M1 made by SkyeTek is an example of an RFID reader designed to mate directly with the Crossbow Mica2Dot Sensor motes. Khademian and Bagherpour, (2017) it should be noted that, the sensor networks in the freezer, processing centre and frozen storage in trucks are simple to be one-hop. The transfer of data can be achieved by sensor networks or the initiated of RFID reader, due to the distance between reader and tag is not very long, such as less than 3 meters.…”

Section: B Sale and Transportation Stagementioning

confidence: 99%

The Study on Efficient Cold Chain Logistics

Ma¹,

Abdul²,

Sharif³

2018

Proceedings of the 2018 2nd International Conference on Economic Development and Education Management (ICEDEM 2018)

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In the supply chain, cold chain is a small part, usually cold chain are using for frozen foods, medical supplies, and fragile items such as, meat, medicines, ice cream, fish etc. The concept of RFID (radio frequency identification device) is tracking products/containers. This technology widely used in the cold supply chain for tracing trucks and their temperature. On the other hand, sensors and RFID is new technology, which also boost to the field of cold chain logistics. This research conducted to find the usage of sensors and RFID and their advantages. The system has many advantages to apply it and it experiences low cost of overhead. For the consideration of differentiated marketing strategy, it is a good strategy to apply this guaranteed cold chain. The LTE-A, the future of GPS and 3G technologies combined with the concept of extranet and intranet make it more transparent for the customers so that the customer can believe the products certainly. A broad and detailed standard of that system needs to be advised in detail so that the suppliers, customers and vendors can follow it bitterly and can more collaborative on the behalf of this system.

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“…Moreover, the vertical shaft of some metal mines is greater than 1500 m. As shaft depth increases, the increase of in situ stress affects the stability of underground engineering and auxiliary operation time (e.g., shift time for construction organization, gangue discharging, equipment lifting, explosives, and personnel) increases continuously. Blasting is currently the primary mining method [1][2][3][4] and tunneling [5,6]; therefore, mid-deep-hole blasting technology is an essential measure to improve excavation efficiency [7][8][9]. Some mines have adopted deep blasting technology using blasthole depths greater than 5 m.…”

Section: Introductionmentioning

confidence: 99%

Study of Two‐Step Parallel Cutting Technology for Deep‐Hole Blasting in Shaft Excavation

Yang

Zheng

Zuo

et al. 2021

Shock and Vibration

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In hard rock deep-hole blasting excavation, blastholes are rarely utilized due to the clamping effect of the lower rock, which affects excavation progress and restricts the development and application of deep-hole blasting technology. Cut blasting is a key to improving excavation speed. In this paper, a new cutting method designating the two-step cutting technology was presented. The blasthole was divided into upper and lower sections without changing the blasthole layout. The upper section was detonated first, creating sufficient free surface for the lower section, which was detonated secondly. This created a larger cavity and improved blasthole utilization. Results showed good blasting effects for two-step cutting technology through theoretical analysis and engineering applications. The blasthole utilization rate was 96.1% when the upper and lower specific charge ratio = 0.78. This paper provides a good reference for resolving the low blasthole utilization problem in deep-hole blasting of vertical shafts within a hard rock.

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Environmentally sustainable mining through proper selection of explosives in blasting operation

Cited by 27 publications

References 17 publications

Influence of Decoupled Charge Structure and Filler on the Blasting Effect

Influence of Decoupled Charge Structure and Filler on the Blasting Effect

The Study on Efficient Cold Chain Logistics

Study of Two‐Step Parallel Cutting Technology for Deep‐Hole Blasting in Shaft Excavation

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