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Modelling of Relationship between Drilling Parameters of Underground Blasting with Rock Blastability in Phosphate Mines
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Yi-ming SHENG1, Xiu-wei CHAI1, Zhi-feng CHANG2, Jian LIU2, Zhi-quan LI2, Bin XIANG2
Blasting | 2024, 41(2) : 120 - 126
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Blasting | 2024, 41(2): 120-126
• BLASTING IN ORE AND ROCK •
Modelling of Relationship between Drilling Parameters of Underground Blasting with Rock Blastability in Phosphate Mines
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Yi-ming SHENG1, Xiu-wei CHAI1, Zhi-feng CHANG2, Jian LIU2, Zhi-quan LI2, Bin XIANG2
Affiliations
  • 1.School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430073, China
  • 2.Hubei Yihua Group Limited Liability Company, Yichang 443099, China
Published: 2024-06-01 doi: 10.3963/j.issn.1001-487X.2024.02.015
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Rock blastability classification is a prerequisite for determining labour quotas, designing blasting programmes and controlling the unit consumption of explosives. In order to realize a real-time grading of rock explodability, a measurement of in-situ drilling parameters of carbon-bearing muddy dolomite during the excavation process of ore body and roadway in the Shukongping phosphorus mine has been carried out based on the KJ212-1 full-hydraulic boring drilling truck. Combined with the indoor uniaxial compressive strength test, the relationship model between the uniaxial compressive strength Rc and the drilling speed V, the drilling hole diameter D and the rotary pressure M was respectively established and verified. Finally, the model is substituted into the solidity coefficient f relationship equation to derive a model for the relationship between the blasthole drill-following parameters and the rock blastability classification. The results of the study show that the average rate of difference between the uniaxial compressive strength calculated by the relational model and the results of the indoor uniaxial compression tests is 5.5%, which demonstrates the reasonableness of applying the model to the real-time prediction of rock blastability. This model provides a more convenient and fast method for real-time grading prediction of rock blastability. The results show that the dolomitic banded phosphorite, mud banded phosphorite and dense banded phosphorite are medium explosive, carbon-bearing mud dolomite is difficult to explode.

drilling parameters  /  measurement while drilling  /  rock blastability  /  real-time grading  /  linear fit
Yi-ming SHENG, Xiu-wei CHAI, Zhi-feng CHANG, Jian LIU, Zhi-quan LI, Bin XIANG. Modelling of Relationship between Drilling Parameters of Underground Blasting with Rock Blastability in Phosphate Mines[J]. Blasting, 2024 , 41 (2) : 120 -126 . DOI: 10.3963/j.issn.1001-487X.2024.02.015
Funding
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  • 2021 Hubei Province Safety Production Special Fund Science and Technology Project(SJZX20211004)
Appendix
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Year 2024 volume 41 Issue 2
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109
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.02.015
  • Receive Date：2023-09-30
  • Online Date：2026-03-20
  • Published：2024-06-01
Article Data
Affiliations
History
  • Received：2023-09-30
Funding
2021 Hubei Province Safety Production Special Fund Science and Technology Project(SJZX20211004)
Affiliations
    1.School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430073, China
    2.Hubei Yihua Group Limited Liability Company, Yichang 443099, China

Corresponding:

CHAI Xiu-wei (1980-), male, Ph. D, professor, master's degree supervisor, engaged in blasting theory and technology, geotechnical engineering and safety monitoring technology 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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