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Hao Wu and Yongsheng Jia
In rock engineering, the dynamic loads caused by mechanical action and rock blasting have an extremely significant influence on the stableness of surrounding rock masses. To examine the impact of dynamic load on the mechanical properties and fracturing c...
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Xiaojun Zhang, Zhuo Li, Zheng Wei and Wenxue Gao
Blasting technology is widely applied in various engineering applications due to its cost-effectiveness and high efficiency, such as in mining, transport infrastructure construction, and building demolition. However, the occurrence of cracking in the rea...
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Juntao Ma, Xue Ling, Qin Zhou, Zhiqiao Wang and Hongjie Liu
In order to study the mechanism of crack propagation in rock cutting, experiments and discrete element numerical simulation of rock cutting at different depths were adopted in this paper. The rock fragmentation can be divided into mini-size fragmentation...
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Hong-Liang Tang, Jun Yang and Qi Yu
Rock fragmentation by blasting influences ore recovery and the cost of downstream operations. The development of electronic detonators makes it possible to improve fragmentation by controlling the initiation timing in blasting projects, and the effect of...
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Romil Mishra, Arvind Kumar Mishra and Bhanwar Singh Choudhary
Blasting is a cost-efficient and effective technique that utilizes explosive chemical energy to generate the necessary pressure for rock fragmentation in surface mines. However, a significant portion of this energy is dissipated in undesirable outcomes s...
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Tong Wu, Shang Shi, Minghao Ren, Jingwen Wang and Jinyu Dong
Long-term erosion of granite?a type of hard rock?by hydrothermal fluids and tectonic movement can lead to a fragmentation of the internal structure of the original rock, transfer/replacement of mineral elements, and alteration of the rock?s basic propert...
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N. Sri Chandrahas, Bhanwar Singh Choudhary, M. Vishnu Teja, M. S. Venkataramayya and N. S. R. Krishna Prasad
The two most frequently heard terms in the mining industry are safety and production. These two terms put a lot of pressure on blasting engineers and crew to give more while consuming less. The key to achieving the optimum blasting results is sophisticat...
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Mingyu Duan, Lefei Shao, Qibai Huang, Chenlin Wang, Xuefeng Li and Yizhe Huang
Prediction of rock fracturing capacity demands particular requirements for the exploitation of mineral resources, especially for the parameter design of conical pick performance for hard rock fragmentation, which must take into account differences in roc...
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Roger Ruiz-Carulla, Jordi Corominas, Josep A. Gili, Gerard Matas, Nieves Lantada, Jose Moya, Albert Prades, M. A. Núñez-Andrés, Felipe Buill and Carol Puig
Real-scale fragmentation tests provide high quality data in order to study the fragmentation pattern of rock blocks. In the tests carried out, the initial rock mass, in terms of both volume and shape, was reconstructed by means of 3D photogrammetry. The ...
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Hoyoung Jeong, Seungbeom Choi, Sudeuk Lee and Seokwon Jeon
Various numerical methods have been used to simulate the rock cutting process. Numerical simulation is a useful tool for estimating the performance of a cutting tool and for understanding the mechanism of rock cutting and interaction between a cutting to...
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