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Evaluation on Rock Mass Blastability of Deep Hole Bench Blasting in Changtan Open-pit Mine based on CWM and CM
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Han-xu SHI1, Chuan-bo ZHOU1, Sheng ZHANG2, Yi-quan MA1, Nan JIANG1, Fei TIAN2
Blasting | 2024, 41(1) : 51 - 59
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Blasting | 2024, 41(1): 51-59
• BLASTING IN ORE AND ROCK •
Evaluation on Rock Mass Blastability of Deep Hole Bench Blasting in Changtan Open-pit Mine based on CWM and CM
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Han-xu SHI1, Chuan-bo ZHOU1, Sheng ZHANG2, Yi-quan MA1, Nan JIANG1, Fei TIAN2
Affiliations
  • 1.Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
  • 2.Inner Mongolia Shengli Zhongwei Blast Co., Ltd., Ordos 010300, China
Published: 2024-03-01 doi: 10.3963/j.issn.1001-487X.2024.01.008
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In deep hole bench blasting, the classification of rock mass under different geological conditions according to its blastability is the premise for determining and optimizing blasting parameters. It is of great significance to improve blasting efficiency and effect and reduce blasting costs. Combined with the actual blasting excavation of Changtan open-pit coal mine, relevant indexes of rock mass blastability classification were obtained through on-site single-hole blasting crater tests, rock mass acoustic wave tests and laboratory rock mechanical tests. Furthermore, the blastability of stripped rock mass in Changtan open-pit coal mine was classified and evaluated based on the combination weighting (CWM) and cloud model (CM). The results show that the blastability of gray-green coarse sandstone at the 1130 platform is gradeⅢ (medium). The blastability of yellow-green medium sandstone at the 1115 platform is grade Ⅱ (more difficult to be broken by blasting). The blastability of purple-red sandy mudstone at the 1100 platform is grade Ⅰ (difficult to be broken by blasting). The blastability of purple mudstone at the 1145 platform is gradeⅢ (medium).

blasting funnel test  /  combination weighting  /  cloud model  /  blastability grading
Han-xu SHI, Chuan-bo ZHOU, Sheng ZHANG, Yi-quan MA, Nan JIANG, Fei TIAN. Evaluation on Rock Mass Blastability of Deep Hole Bench Blasting in Changtan Open-pit Mine based on CWM and CM[J]. Blasting, 2024 , 41 (1) : 51 -59 . DOI: 10.3963/j.issn.1001-487X.2024.01.008
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  • The National Natural Science Foundation of China(41972286)
Appendix
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Year 2024 volume 41 Issue 1
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.01.008
  • Receive Date：2023-11-08
  • Online Date：2026-03-20
  • Published：2024-03-01
Article Data
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History
  • Received：2023-11-08
Funding
The National Natural Science Foundation of China(41972286)
Affiliations
    1.Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
    2.Inner Mongolia Shengli Zhongwei Blast Co., Ltd., Ordos 010300, China

Corresponding:

ZHOU Chuan-bo (1963-), male, professor, Ph. D, mainly engaged in engineering blasting, geotechnical engineering research, (E-mail) .
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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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