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Influence of Stemming Length on Damage Effect of Rock Blasting
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Kexin WEI1, Zhenyang XU1, Xuesong WANG2, Yiran YAN1, Biqi REN1
Mining and Metallurgical Engineering | 2024, 44(3) : 16 - 21
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Mining and Metallurgical Engineering | 2024, 44(3): 16-21
• MINING •
Influence of Stemming Length on Damage Effect of Rock Blasting
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Kexin WEI1, Zhenyang XU1, Xuesong WANG2, Yiran YAN1, Biqi REN1
Affiliations
  • 1.School of Mining Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
  • 2.School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, China
Published: 2024-06-01 doi: 10.3969/j.issn.0253-6099.2024.03.004
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The numerical simulation was used to establish a single-hole blasting model, which was then used to simulate the blasting effect with different stemming length. Otsu thresholding technique was adopted for image segmentation, and the data, such as percentage of cracked rock area, fractal dimension of pore structure, and fragmentation of rock mass, were extracted for comparative analysis, so as to explore the influence of stemming length on damage effect under deep-hole blasting. The results show that fractal dimension and percentage of cracked rock area are in an uptrend before falling down as stemming length increases. The fractal dimension reaches the maximum value with stemming length of 3.0 m, and the percentage of cracked rock area reaches the maximum value with stemming length of 1.7 m. Stemming length of 2.2 m can bring the highest number of fragments, and stemming length of 2.0 m can result in the smallest average area of fragments. It is found that the blasting with the stemming length of 2.0-2.2 m can lead to better rock fragmentation effect. As the stemming length increases, the flyrock becomes bigger, and the displacement distance decreases. The research results can be taken as reference in selection of stemming parameters for blasting operation.

deep-hole blasting  /  stemming length  /  rock blasting  /  crack propagation  /  image analysis  /  damage effect
Kexin WEI, Zhenyang XU, Xuesong WANG, Yiran YAN, Biqi REN. Influence of Stemming Length on Damage Effect of Rock Blasting[J]. Mining and Metallurgical Engineering, 2024 , 44 (3) : 16 -21 . DOI: 10.3969/j.issn.0253-6099.2024.03.004
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Article Info
doi: 10.3969/j.issn.0253-6099.2024.03.004
  • Receive Date：2023-12-23
  • Online Date：2026-03-17
  • Published：2024-06-01
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  • Received：2023-12-23
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Affiliations
    1.School of Mining Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
    2.School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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