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Design and Experiment of Slope Presplit Blasting Parameters Based on Borehole Wall Pressure
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Wenkui ZHAO1, Haixian HUANG2, Qiyue LI2, Yiming GUO2, Yihang ZHANG2
Mining and Metallurgical Engineering | 2025, 45(2) : 1 - 5
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Mining and Metallurgical Engineering | 2025, 45(2): 1-5
• MINING •
Design and Experiment of Slope Presplit Blasting Parameters Based on Borehole Wall Pressure
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Wenkui ZHAO1, Haixian HUANG2, Qiyue LI2, Yiming GUO2, Yihang ZHANG2
Affiliations
  • 1.Xizang Yulong Copper Co., Ltd., Western Mining Co., Ltd., Qamdo 854000, Xizang, China
  • 2.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
Published: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.001
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In order to address the poor presplit blasting effect on the final slope of the Yulong Copper Mine in Xizang Autonomous Region, the engineering applicable ranges of parameters such as decoupling coefficient, borehole diameter, linear charge density and hole spacing were calculated in consideration of the combined effects of explosion-generated gases and air shock waves, and the presplit blasting parameters were also optimized by performing orthogonal experiment. The results indicate that with a borehole diameter of 120 mm, a linear charge density of 800-1 000 g/m and a hole spacing of 0.9 m, the half-borehole rate after blasting exceeds 95%, the unevenness between adjacent holes is much less than ±5 cm, and the slope gradient deviation is less than ±2°, forming a continuous and regular presplit surface. This confirms the engineering applicability of the theoretically calculated parameter ranges.

open-pit mine  /  slope  /  drilling and blasting  /  presplit blasting  /  explosion-generated gases  /  borehole wall pressure  /  decoupling coefficient  /  blasting experiment
Wenkui ZHAO, Haixian HUANG, Qiyue LI, Yiming GUO, Yihang ZHANG. Design and Experiment of Slope Presplit Blasting Parameters Based on Borehole Wall Pressure[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 1 -5 . DOI: 10.3969/j.issn.0253-6099.2025.02.001
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.02.001
  • Receive Date：2024-10-10
  • Online Date：2026-03-19
  • Published：2025-04-01
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History
  • Received：2024-10-10
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Affiliations
    1.Xizang Yulong Copper Co., Ltd., Western Mining Co., Ltd., Qamdo 854000, Xizang, China
    2.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
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Citations
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
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Genus		 种数
Number of
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Percentage of total
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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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