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Research on Advanced Cutting Control Blasting of Complex Lithologic Tunnel
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Zhi-long YANG1a, 1b, Dong-wang ZHONG1a, 1b, Wen-liang BAI2, Yun-peng ZHAO2, Jian-jun MA1a, 1b, Teng-fei LI1a, 1b, Li HE1a, 1b, Jian-feng SI1a, 1b, 3, Lu-jun CAI1a, 1b
Blasting | 2024, 41(2) : 23 - 31
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Blasting | 2024, 41(2): 23-31
• THEORETICAL AND TECHNOLOGICAL EXPLORATION •
Research on Advanced Cutting Control Blasting of Complex Lithologic Tunnel
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Zhi-long YANG1a, 1b, Dong-wang ZHONG1a, 1b, Wen-liang BAI2, Yun-peng ZHAO2, Jian-jun MA1a, 1b, Teng-fei LI1a, 1b, Li HE1a, 1b, Jian-feng SI1a, 1b, 3, Lu-jun CAI1a, 1b
Affiliations
  • 1a.College of Science, Wuhan University of Science and Technology, Wuhan 430065, China
  • 1b.Hubei Intelligent Blasting Engineering Technology Research Center, Wuhan University of Science and Technology, Wuhan 430065, China
  • 2.China Railway Construction Bridge Engineering Bureau Group CO., LTD, Tianjin 300300, China
  • 3.China Railway Siyuan Survey And Design Group Co., LTD., Wuhan 430065, China
Published: 2024-06-01 doi: 10.3963/j.issn.1001-487X.2024.02.004
Outline
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In response to the poor excavation effect of traditional blasting in complex lithology tunnels, a method called advanced cutting control blasting is proposed based on the research of traditional smooth blasting and pre-splitting blasting. This method involves conducting the blasting around weak surrounding rock areas after tunnel contouring hole blasting. A quasi-three-dimensional model was established, and numerical simulations were conducted using the fluid-structure interaction (ALE) algorithm and ANSYS/LS-DYNA finite element analysis software to compare the advanced cutting control blasting method with traditional pre-splitting and smooth blasting methods. The results show that compared to smooth blasting and pre-splitting, advanced cutting control blasting reduced the depth of damage around the tunnel contour by 6.85% and 10.08%, respectively. Based on simulation results, field blast test plans were designed, and comparative tests between smooth surface blasting and advanced cutting control blasting methods were carried out. The blast results demonstrated that after adopting the advanced cutting control method, the tunnel contour had good shaping effects without block falling or collapse in weak surrounding rock areas, while over-excavation was effectively controlled. Three-dimensional cross-sectional scanning data and statistical results of post-blast sections indicated that compared to well-performing smooth surface blasting, maximum over-excavation decreased by 35.98%, average over-excavation decreased by 25.60%, concrete consumption decreased by 26.3%, and flatness standard deviation increased by 24.29%. This method has been verified through field practice as it reduces over-excavation while mitigating blast damage in complex lithology areas, thereby improving tunnel retaining rock flatness.

tunnel blasting  /  complex lithology  /  advanced cutting blasting  /  damage control  /  three-dimensional scanning
Zhi-long YANG, Dong-wang ZHONG, Wen-liang BAI, Yun-peng ZHAO, Jian-jun MA, Teng-fei LI, Li HE, Jian-feng SI, Lu-jun CAI. Research on Advanced Cutting Control Blasting of Complex Lithologic Tunnel[J]. Blasting, 2024 , 41 (2) : 23 -31 . DOI: 10.3963/j.issn.1001-487X.2024.02.004
Funding
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  • National Natural Science Foundation of China(51904210; 52274136)
  • Hubei Natural Science Foundation Youth Program(2022CFB594)
Appendix
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Year 2024 volume 41 Issue 2
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99
41
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.02.004
  • Receive Date：2023-01-28
  • Online Date：2026-03-20
  • Published：2024-06-01
Article Data
Affiliations
History
  • Received：2023-01-28
Funding
National Natural Science Foundation of China(51904210; 52274136)
Hubei Natural Science Foundation Youth Program(2022CFB594)
Affiliations
    1a.College of Science, Wuhan University of Science and Technology, Wuhan 430065, China
    1b.Hubei Intelligent Blasting Engineering Technology Research Center, Wuhan University of Science and Technology, Wuhan 430065, China
    2.China Railway Construction Bridge Engineering Bureau Group CO., LTD, Tianjin 300300, China
    3.China Railway Siyuan Survey And Design Group Co., LTD., Wuhan 430065, China

Corresponding:

ZHONG Dong-wang (1963-), male, professor, doctoral supervisor, mainly engaged in engineering blasting and controlled blasting 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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