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Study on Vibration Response Law of Rock Mass Block on Free Face
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Jian-ming SHA1, Yun-hua GUO1, Lang-bao ZHAI1, Yi LUO1, 2, Xin-ping LI1, 2
Blasting | 2024, 41(1) : 8 - 13
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Blasting | 2024, 41(1): 8-13
• THEORETICAL AND TECHNOLOGICAL EXPLORATION •
Study on Vibration Response Law of Rock Mass Block on Free Face
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Jian-ming SHA1, Yun-hua GUO1, Lang-bao ZHAI1, Yi LUO1, 2, Xin-ping LI1, 2
Affiliations
  • 1.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
  • 2.Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 572024, China
Published: 2024-03-01 doi: 10.3963/j.issn.1001-487X.2024.01.002
Outline
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Structural plane is one of the key factors controlling the local stability of rock mass engineering. It is a prerequisite for rock mass stability analysis to find out the occurrence and combination of structural planes. Geological survey is often used at present. However, a high-cost supplementary survey is often needed when there are omissions due to the limitation of this survey means. Therefore, the surface vibration response law of the structural plane model was studied by laboratory tests. The study shows that the amplitude of the particle in front of the structural plane increases for the single structural plane model. For a block model cut by two structural planes, the amplitude-amplification effect exists only in front of the structural plane far from the power input side. Furthermore, the rock mass models with different structural plane dip angles were simulated respectively. The results show that, when the angle θ between the structural plane and the ground in the direction of the explosion source is less than 90°, the particle amplitude in the incident area of the vibration wave in front of the structural plane has an obvious amplification effect, and the particle amplitude behind the structural plane significantly attenuates. With the decrease of the angle θ between the structural plane and the boundary plane, the increase rate of the peak vibration velocity of the particle in front of the structural plane gradually increases, and the amplitude of the wave amplifies 2.8 times when θ=20°.

joint rock mass  /  rock block  /  free face  /  vibration response  /  attenuation characteristics
Jian-ming SHA, Yun-hua GUO, Lang-bao ZHAI, Yi LUO, Xin-ping LI. Study on Vibration Response Law of Rock Mass Block on Free Face[J]. Blasting, 2024 , 41 (1) : 8 -13 . DOI: 10.3963/j.issn.1001-487X.2024.01.002
Funding
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  • National Natural Science Foundation of China(51979208)
  • Major Science and Technology Project of Sanya Yazhou Bay Science and Technology City Administration(SKJC-KJ-2019KY02)
Appendix
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Year 2024 volume 41 Issue 1
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.01.002
  • Receive Date：2023-02-23
  • Online Date：2026-03-20
  • Published：2024-03-01
Article Data
Affiliations
History
  • Received：2023-02-23
Funding
National Natural Science Foundation of China(51979208)
Major Science and Technology Project of Sanya Yazhou Bay Science and Technology City Administration(SKJC-KJ-2019KY02)
Affiliations
    1.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
    2.Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 572024, China

Corresponding:

GUO Yun-hua (1974-), male, associate researcher, mainly engaged in teaching and research of geotechnical 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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