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Precision Blasting Technology Based on Classification of Rock Mass Blastability
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Bin LIU1, Zhaowen ZHU1, Lianwei FENG1, Xin LU1, Pengyu CHEN1, Ruimin XUE1, Ji REN2, Kang PENG2
Mining and Metallurgical Engineering | 2026, 46(1) : 37 - 43
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Mining and Metallurgical Engineering | 2026, 46(1): 37-43
• MINING •
Precision Blasting Technology Based on Classification of Rock Mass Blastability
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Bin LIU1, Zhaowen ZHU1, Lianwei FENG1, Xin LU1, Pengyu CHEN1, Ruimin XUE1, Ji REN2, Kang PENG2
Affiliations
  • 1.Xincheng Gold Mine, Shandong Gold Mining Co., Ltd., Laizhou 261400, Shandong, China
  • 2.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
doi: 10.3969/j.issn.0253-6099.2026.01.006
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Precision blasting technology was studied based on classification of rock mass blastability aiming at slow drift advance by blasting in stope and high unit consumption of explosive in Xincheng Gold Mine. By analyzing indices such as uniaxial compressive strength, rock mass integrity coefficient and rock density, a blastability classification model with multi-parameters was established, and the rock mass blastability was divided into 5 levels based on the proposed modified BQ index formula. It is found the ore rocks in Xincheng Gold Mine are mainly rated as level Ⅲ (intermediate) and level Ⅳ (difficulty) in terms of ore blastability, for which blasting parameters were then optimized respectively. Industrial experiments show that after optimization, the blasthole utilization rate for stope drifts was increased from 87.3% to 93.9%, and overbreak was reduced, including the over-width down from 17.5% to 1.25% and the over-height down from 25.0% to 3.3%. It is shown that smooth blasting and precise control of surrounding rock disturbance can be actualized.

rock mass blastability  /  blastability classification  /  precision blasting  /  correlation  /  blasting parameters  /  overbreak  /  underbreak  /  BQ index  /  blasthole utilization rate
刘滨, 朱兆文, 冯连伟, 鲁鑫, 陈鹏宇, 薛瑞敏, 任基, 彭康. 基于岩体可爆性分级的精细化爆破技术研究. 矿冶工程杂志, 2026 , 46 (1) : 37 -43 . DOI: 10.3969/j.issn.0253-6099.2026.01.006
Bin LIU, Zhaowen ZHU, Lianwei FENG, Xin LU, Pengyu CHEN, Ruimin XUE, Ji REN, Kang PENG. Precision Blasting Technology Based on Classification of Rock Mass Blastability[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 37 -43 . DOI: 10.3969/j.issn.0253-6099.2026.01.006
Appendix
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Year 2026 volume 46 Issue 1
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.01.006
  • Receive Date：2025-08-12
  • Online Date：2026-10-08
Article Data
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History
  • Received：2025-08-12
Funding
Affiliations
    1.Xincheng Gold Mine, Shandong Gold Mining Co., Ltd., Laizhou 261400, Shandong, China
    2.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2026.01.006
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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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