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Research on Vibration Response Characteristics and Attenuation Rule of Advance Tunnel with Minimum Clear Distance
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Yue-sen PENG1a, Dong-wang ZHONG1a, 1b, Chao-zhen WANG2, Wen-liang BAI2, Yun-peng ZHAO2, Hong-ping LU2, Hong-lin LI2, Zhi-long YANG3
Blasting | 2024, 41(3) : 111 - 120
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Blasting | 2024, 41(3): 111-120
• BLASTING IN ORE AND ROCK •
Research on Vibration Response Characteristics and Attenuation Rule of Advance Tunnel with Minimum Clear Distance
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Yue-sen PENG1a, Dong-wang ZHONG1a, 1b, Chao-zhen WANG2, Wen-liang BAI2, Yun-peng ZHAO2, Hong-ping LU2, Hong-lin LI2, Zhi-long YANG3
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.Explosives Corporation Limited, Changsha 410000, China
Published: 2024-09-01 doi: 10.3963/j.issn.1001-487X.2024.03.014
Outline
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As tunnels are integral to railways and other transport infrastructures, studying the vibration response and attenuation rule of tunnel blasting for tunnel construction projects is significant. The blasting solutions proposed in this paper are to minimize clear distance in the blasting excavation of a high-speed railway tunnel for the Chongqing-Kunming high-speed railway construction project. A new excavation method was developed to divide the excavation section into alternating blasting on both the left and right sides. Besides, the blasting vibration velocity of the double-line tunnel was monitored. The vibration velocity analysis of the advance tunnel shows that the maximum vibration velocity in the tunnel is mainly caused by cutting hole and vault auxiliary hole blasting, and the radial vibration velocity is the maximum. The vibration velocity of the arch waist of the explosion side wall is 1.3 to 2 times bigger than that of the arch foot on the cross-section, and the ratio caused by the initiation of the cutting hole is relatively small. Meanwhile, the vibration velocity of each point in front of the tunnel face is more significant than that at the relative position behind the vertical section. In contrast, the attenuation rate of the vibration velocity behind is relatively more significant. The research findings have been successfully applied to the engineering practice, and a relevant small clear distance tunnel has been safely connected.

minimum clear distance tunnel  /  advance tunnel  /  blasting response  /  vibration monitoring  /  vibration rule
Yue-sen PENG, Dong-wang ZHONG, Chao-zhen WANG, Wen-liang BAI, Yun-peng ZHAO, Hong-ping LU, Hong-lin LI, Zhi-long YANG. Research on Vibration Response Characteristics and Attenuation Rule of Advance Tunnel with Minimum Clear Distance[J]. Blasting, 2024 , 41 (3) : 111 -120 . DOI: 10.3963/j.issn.1001-487X.2024.03.014
Funding
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  • National Natural Science Foundation of China(52274136)
  • National key research and development program of Hubei province(2020BCA084)
Appendix
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Year 2024 volume 41 Issue 3
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97
44
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.03.014
  • Receive Date：2023-12-12
  • Online Date：2026-03-20
  • Published：2024-09-01
Article Data
Affiliations
History
  • Received：2023-12-12
Funding
National Natural Science Foundation of China(52274136)
National key research and development program of Hubei province(2020BCA084)
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.Explosives Corporation Limited, Changsha 410000, China

Corresponding:

WANG Chao-zhen (1986-), male, Senior engineer, mainly engaged in the research of railway engineering, (E-mail) .
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https://castjournals.cast.org.cn/joweb/bp/EN/10.3963/j.issn.1001-487X.2024.03.014
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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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