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Numerical Simulation and Application of Energy Dissipation Blasting for Relatively Intact Hard Rock
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Yu-quan CHEN1, Da-zhong LI1, Ming-ze LI2, Ming CHEN2
Blasting | 2025, 42(2) : 88 - 96
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Blasting | 2025, 42(2): 88-96
• BLASTING IN ORE AND ROCK •
Numerical Simulation and Application of Energy Dissipation Blasting for Relatively Intact Hard Rock
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Yu-quan CHEN1, Da-zhong LI1, Ming-ze LI2, Ming CHEN2
Affiliations
  • 1.China International Water & Electric Corp, Beijing 100120, China
  • 2.State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China
Published: 2025-06-01 doi: 10.3963/j.issn.1001-487X.2025.02.011
Outline
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A novel energy dissipation blasting technique based on water coupling is proposed to explore new methods for rapid excavation of spillway protection layers in hydropower stations under relatively intact hard rock conditions. This method specifically addresses the excavation requirements of the Nam Kong 1 Hydropower Station spillway in Laos. By increasing borehole pressure, the technique generates stronger stress, which is advantageous for excavating hard rock formations. Simulation analysis using LS-DYNA software demonstrates that coupling water-charged explosives with a blocked borehole bottom amplifies the peak load on the borehole walls and extends the explosive load duration, thereby improving the fragmentation of harder rock at the borehole bottom. Results indicate that the combination of bottom-hole blockage and water-coupled charges increases lateral damage depth and prolongs load application time, thus achieving more effective excavation and formation in relatively intact hard rock. Comprehensive evaluations based on numerical simulations and field test parameters confirm that this approach significantly improves the quality of excavation and formation of the first-stage stilling basin floor in practical engineering applications.

hard rock  /  spillway excavation  /  dissipation and accumulation energy blasting  /  numerical simulation  /  excavation shaping effect
Yu-quan CHEN, Da-zhong LI, Ming-ze LI, Ming CHEN. Numerical Simulation and Application of Energy Dissipation Blasting for Relatively Intact Hard Rock[J]. Blasting, 2025 , 42 (2) : 88 -96 . DOI: 10.3963/j.issn.1001-487X.2025.02.011
Funding
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  • Chinese National Natural Science Foundation(51979205)
Appendix
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Year 2025 volume 42 Issue 2
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Article Info
doi: 10.3963/j.issn.1001-487X.2025.02.011
  • Receive Date：2024-06-28
  • Online Date：2026-03-19
  • Published：2025-06-01
Article Data
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History
  • Received：2024-06-28
Funding
Chinese National Natural Science Foundation(51979205)
Affiliations
    1.China International Water & Electric Corp, Beijing 100120, China
    2.State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China

Corresponding:

CHEN Ming (1977-), male, Ph. D, professor, mainly engaged in engineering blasting and rock dynamics research, (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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