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Experimental Study on Optimization of Presplitting Blasting Parameters for Water-adjacent Slopes
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Dong-wang ZHONG1, 2, Hao-hao TAO1, Lin-na LI1, Teng-fei LI1, Li HE1, 2, Jian-feng SI1, 2, 3, Jia-wei WAN1, Han GAO1
Blasting | 2025, 42(2) : 31 - 43
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Blasting | 2025, 42(2): 31-43
• THEORETICAL AND TECHNOLOGICAL EXPLORATION •
Experimental Study on Optimization of Presplitting Blasting Parameters for Water-adjacent Slopes
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Dong-wang ZHONG1, 2, Hao-hao TAO1, Lin-na LI1, Teng-fei LI1, Li HE1, 2, Jian-feng SI1, 2, 3, Jia-wei WAN1, Han GAO1
Affiliations
  • 1.College of Science, Wuhan University of Science and Technology, Wuhan 430065, China
  • 2.Hubei Intelligent Blasting Engineering Technology Research Center, Wuhan 430065, China
  • 3.China Railway Fourth Institute Group Engineering Operation and Maintenance Limited Liability Company, Wuhan 430061, China
Published: 2025-06-01 doi: 10.3963/j.issn.1001-487X.2025.02.004
Outline
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Pre-splitting blasting has been widely employed in river channel slope excavation to effectively mitigate damage to the retained rock mass, reduce blast-induced vibrations, and optimize blasting parameters for water-saturated slopes. Investigation of reasonable parameters for pre-splitting blasting in such conditions is important for river channel excavation projects. Based on geometric, physical, and dynamic similarity principles, an experimental model for pre-splitting blasting water-saturated slopes was designed, utilizing concrete as a substitute for red sandstone and detonators instead of emulsified explosives. The quality of pre-split crack formation, slope face shaping, and retained rock mass damage were evaluated under various conditions. The results showed that the pre-split crack formation quality and slope shaping quality significantly improved. The damage to the retained rock mass was reduced by 24.86% when the hole diameter increased from 0.8 cm to 1.2 cm. Field test results indicated that the optimal blasting effect can be achieved with a pre-split hole diameter of 115 mm and a hole spacing of 80 cm in a practical application of pre-splitting blasting for water-saturated slopes when the geological conditions involve medium-hard rocks.

water-adjacent slopes  /  pre-splitting blasting  /  parameter optimization  /  rock mass damage  /  model test
Dong-wang ZHONG, Hao-hao TAO, Lin-na LI, Teng-fei LI, Li HE, Jian-feng SI, Jia-wei WAN, Han GAO. Experimental Study on Optimization of Presplitting Blasting Parameters for Water-adjacent Slopes[J]. Blasting, 2025 , 42 (2) : 31 -43 . DOI: 10.3963/j.issn.1001-487X.2025.02.004
Funding
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  • National key research and development program of Hubei province(2020BCA084)
  • National Natural Science Foundation of China(52274136)
  • Natural Science Foundation of Hubei Province(2022CFB594)
  • Graduate Student Innovation and Entrepreneurship Foundation of Wuhan University of Science and Technology(JCX2021064)
Appendix
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Year 2025 volume 42 Issue 2
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131
57
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Article Info
doi: 10.3963/j.issn.1001-487X.2025.02.004
  • Receive Date：2024-11-28
  • Online Date：2026-03-19
  • Published：2025-06-01
Article Data
Affiliations
History
  • Received：2024-11-28
Funding
National key research and development program of Hubei province(2020BCA084)
National Natural Science Foundation of China(52274136)
Natural Science Foundation of Hubei Province(2022CFB594)
Graduate Student Innovation and Entrepreneurship Foundation of Wuhan University of Science and Technology(JCX2021064)
Affiliations
    1.College of Science, Wuhan University of Science and Technology, Wuhan 430065, China
    2.Hubei Intelligent Blasting Engineering Technology Research Center, Wuhan 430065, China
    3.China Railway Fourth Institute Group Engineering Operation and Maintenance Limited Liability Company, Wuhan 430061, China

Corresponding:

TAO Hao-hao (2000-), male, master candidate, mainly engaged in gas diffusion, explosion and structural blast resistance in urban comprehensive pipeline corridors research, (E-mail) .
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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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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