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Application of Shaped Charge Device and Decked Charge in Perimeter Holes of Smooth Blasting
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Qing-biao WANG1, Tao WANG1, Cheng-lin TIAN1, Yong SUN1, Xiang WEI2, Zhong-hui LI2, Xu WANG1, Yue LI1
Blasting | 2024, 41(1) : 77 - 84
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Blasting | 2024, 41(1): 77-84
• BLASTING IN ORE AND ROCK •
Application of Shaped Charge Device and Decked Charge in Perimeter Holes of Smooth Blasting
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Qing-biao WANG1, Tao WANG1, Cheng-lin TIAN1, Yong SUN1, Xiang WEI2, Zhong-hui LI2, Xu WANG1, Yue LI1
Affiliations
  • 1.School of Resources, Shandong University of Science and Technology, Tai′an 271000, China
  • 2.China Railway 14th Bureau Group Fourth Engineering Co., Ltd., Tai′an 250000, China
Published: 2024-03-01 doi: 10.3963/j.issn.1001-487X.2024.01.011
Outline
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Smooth blasting in tunnel construction needs decked charge in the peripheral holes. However, this charging method has certain limitations and risk of misfire due to the usage of detonating cord together with detonator. So, it is an urgent problem to improve the effect of smooth blasting and ensure tunnel excavation efficiency at the same time. Related research was conducted by field tests, and a new initiation technology of “Shaped device + digital electronic detonator” has been proposed, which was applied to a plateau tunnel. The experimental results show that, compared with the original technology, the powder factor by using the new technology has been reduced by 0.2 kg/m3, the half-hole rate is increased by 5%, and the average charge time is reduced from the original 1.3 h to 1.0 h. The tunnel excavation cycle footage is stabilized, and the cost of consumables is greatly reduced, and it is expected to be widely used in tunnel smooth blasting.

tunnel excavation  /  smooth blasting  /  decked charge  /  joint initiation technology  /  shaped charge device
Qing-biao WANG, Tao WANG, Cheng-lin TIAN, Yong SUN, Xiang WEI, Zhong-hui LI, Xu WANG, Yue LI. Application of Shaped Charge Device and Decked Charge in Perimeter Holes of Smooth Blasting[J]. Blasting, 2024 , 41 (1) : 77 -84 . DOI: 10.3963/j.issn.1001-487X.2024.01.011
Funding
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  • National Natural Science Foundation of China(52278359)
  • Open Fund of the State Key Laboratory of Coal Mine Disaster Dynamics and Control(2011DA105287-FW202203)
  • Qingdao Postdoctoral Grant(QDBSH20230202074)
  • Tai'an Scientific and Technological Innovation and Development Project (Policy Guidance Category)(2022GX089)
Appendix
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Year 2024 volume 41 Issue 1
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117
55
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.01.011
  • Receive Date：2023-10-07
  • Online Date：2026-03-20
  • Published：2024-03-01
Article Data
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History
  • Received：2023-10-07
Funding
National Natural Science Foundation of China(52278359)
Open Fund of the State Key Laboratory of Coal Mine Disaster Dynamics and Control(2011DA105287-FW202203)
Qingdao Postdoctoral Grant(QDBSH20230202074)
Tai'an Scientific and Technological Innovation and Development Project (Policy Guidance Category)(2022GX089)
Affiliations
    1.School of Resources, Shandong University of Science and Technology, Tai′an 271000, China
    2.China Railway 14th Bureau Group Fourth Engineering Co., Ltd., Tai′an 250000, China

Corresponding:

SUN Yong (1971-), male, professor, mainly engaged in tunnel engineering and blasting engineering related teaching and research work, (E-mail) .
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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
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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