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Study on Influence of Fusion Device on Detonation Distance of Emulsion Explosives under Constraint Conditions
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Zhong-lei LIU1, 2, Xu-hua WANG2, Ying-kui WANG2, Zhong-hui LI2, Long LIANG2, Yong SUN1, Cheng-lin TIAN1, Tao WANG1, Xu WANG1
Blasting | 2024, 41(3) : 171 - 178
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Blasting | 2024, 41(3): 171-178
• BLASTING MATERIALS •
Study on Influence of Fusion Device on Detonation Distance of Emulsion Explosives under Constraint Conditions
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Zhong-lei LIU1, 2, Xu-hua WANG2, Ying-kui WANG2, Zhong-hui LI2, Long LIANG2, Yong SUN1, Cheng-lin TIAN1, Tao WANG1, Xu WANG1
Affiliations
  • 1.School of Resources, Shandong University of Science and Technology, Tai'an 271000, China
  • 2.China Railway 14th Bureau Group Co., Ji'nan 250000, China
Published: 2024-09-01 doi: 10.3963/j.issn.1001-487X.2024.03.021
Outline
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Field tests in a region of the plateau were carried out to study the “poly device+emulsion explosives” in tunnel surface blasting and to achieve the feasibility of peripheral hole air spacing charge and poly device on the explosives detonation distance. A seamless steel tube was used to simulate the tunnel peripheral hole for two or more sections of “emulsion explosives+poly device” detonation. A martyrdom test was implemented with#2 rock emulsion explosives. The maximum stable detonation and martyrdom distance were obtained through several groups of experiments. The test results show that the maximum stable detonation and martyrdom distance 15 cm length of polymerized explosives and#2 rock emulsion explosives are respectively 230 cm and 115 cm in the seamless steel tube. The maximum stable detonation distance of multi-section polymerized explosives can reach 80 cm. Due to the radial constraints on the detonation wave of the polymerization device, the front end of the conical metal drug mask explosion formed by the polymerization of energy jets significantly increases the axial and upward shockwave energy, which makes it possible to increase the energy of the shockwave. The emulsion explosives in seamless steel pipe detonation distance increased significantly upward shock wave energy, which can be applied to the tunnel perimeter hole, replacing the detonating cord to achieve air spacing charge and enhance the effect of surface blasting, cost savings, and time savings.

glossy blasting  /  concentrator  /  detonation distance  /  seamless steel tubes  /  concentrator jets
Zhong-lei LIU, Xu-hua WANG, Ying-kui WANG, Zhong-hui LI, Long LIANG, Yong SUN, Cheng-lin TIAN, Tao WANG, Xu WANG. Study on Influence of Fusion Device on Detonation Distance of Emulsion Explosives under Constraint Conditions[J]. Blasting, 2024 , 41 (3) : 171 -178 . DOI: 10.3963/j.issn.1001-487X.2024.03.021
Funding
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  • Supported by the national natural science foundation of china(52278359)
  • Supported by the open fund of state key laboratory of coal mine hazard dynamics and control(2011DA105287-FW202203)
  • Supported by 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 3
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131
62
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.03.021
  • Receive Date：2024-01-04
  • Online Date：2026-03-20
  • Published：2024-09-01
Article Data
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History
  • Received：2024-01-04
Funding
Supported by the national natural science foundation of china(52278359)
Supported by the open fund of state key laboratory of coal mine hazard dynamics and control(2011DA105287-FW202203)
Supported by 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 Co., Ji'nan 250000, China

Corresponding:

SUN Yong (1971-), male, professor, mainly engaged in teaching and scientific research in tunnel engineering, blasting engineering, (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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