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Numerical Simulation of Blasting with Wedge Cut Based on LS-DYNA Software and Its Application
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Banghong CHEN1, Xingming CHEN2, Shangrong WU1, Zhiwen FEI1
Mining and Metallurgical Engineering | 2025, 45(2) : 47 - 53
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Mining and Metallurgical Engineering | 2025, 45(2): 47-53
• MINING •
Numerical Simulation of Blasting with Wedge Cut Based on LS-DYNA Software and Its Application
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Banghong CHEN1, Xingming CHEN2, Shangrong WU1, Zhiwen FEI1
Affiliations
  • 1.Kunming Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd., Kunming 650231, Yunnan, China
  • 2.School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
Published: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.008
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The western No.2 mining area of a certain mine adopts the non-pillar sublevel caving in mining, and excessive wedge cut height in the 1 546 m sublevel leads to poor blasting effect. To address this problem, blasting with wedge cut was specially studied. Firstly, the rock parameters were calibrated based on the RHT constitutive model and the damage threshold of the rock was determined to be 0.4 by a fluid-structure interaction analysis with the LS-DYNA software. A comparative analysis of the cut blasting effects with different cut width shows that with the cut height fixed at 23 m, the effective damage rate of the rock presents a unimodal distribution with an increase in cut width. The optimal cut width is found to be 24 m, with which the effective damage rate of the rock can reach a peak value of 0.692 5. Based on these parameters, the on-site application of designed cutting scheme indicates that over 85% of blast-forming space can meet the requirement, presenting a reasonable fragment distribution of muck pile, with the angle of repose at approximately 40°.

non-pillar sublevel caving method  /  cut  /  RHT  /  constitutive model  /  numerical simulation  /  damage  /  cut blasting
Banghong CHEN, Xingming CHEN, Shangrong WU, Zhiwen FEI. Numerical Simulation of Blasting with Wedge Cut Based on LS-DYNA Software and Its Application[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 47 -53 . DOI: 10.3969/j.issn.0253-6099.2025.02.008
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Year 2025 volume 45 Issue 2
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.02.008
  • Receive Date：2024-10-27
  • Online Date：2026-03-19
  • Published：2025-04-01
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  • Received：2024-10-27
Affiliations
    1.Kunming Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd., Kunming 650231, Yunnan, China
    2.School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, 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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