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Dynamic Response Characteristics of Saturated Mudstone Under Impact Load
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Cuiye JIN, Rula SHA, Xueli MA, Kairui SONG
Mining and Metallurgical Engineering | 2025, 45(5) : 14 - 19
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Mining and Metallurgical Engineering | 2025, 45(5): 14-19
• MINING •
Dynamic Response Characteristics of Saturated Mudstone Under Impact Load
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Cuiye JIN, Rula SHA, Xueli MA, Kairui SONG
Affiliations
  • School of Resources, Environment and Architectural Engineering, Chifeng University, Chifeng 024000, Inner Mongolia, China
Published: 2025-10-01 doi: 10.3969/j.issn.0253-6099.2025.05.003
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To analyze the damage effect of drilling and blasting in construction on the surrounding rock of roadway, a Hopkinson pressure bar (SHPB) test and numerical simulation were carried out to investigate the dynamic response characteristics of saturated mudstone under one-dimensional impact load. Under impact with different strain rate, rock samples undergo four deformation stages, including compaction, quasi-elasticity, yielding and unloading. The saturated mudstone has its dynamic elastic modulus in a linear relationship with the strain rate. As the strain rate increases, dynamic fragmentation of the rock samples is significantly enhanced, and the energy dissipation of saturated mudstone also correspondingly increases. The mean error between the peak stress obtained from the numerical simulation and the experiment is 7.9%, which accurately reflects the dynamic characteristics, such as morphology of mudstone fragmentation and dynamic stress-strain relationship, under impact with different strain rates. The strain rate effect of mudstone indicates that blasting disturbance will continuously change its energy state, so dynamic monitoring should be strengthened for the deformation of surrounding rock during tunneling.

roadway construction  /  Hopkinson pressure bar (SHPB) test  /  mudstone  /  impact load  /  dynamics  /  morphology of fragmentation
Cuiye JIN, Rula SHA, Xueli MA, Kairui SONG. Dynamic Response Characteristics of Saturated Mudstone Under Impact Load[J]. Mining and Metallurgical Engineering, 2025 , 45 (5) : 14 -19 . DOI: 10.3969/j.issn.0253-6099.2025.05.003
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doi: 10.3969/j.issn.0253-6099.2025.05.003
  • Receive Date：2025-05-12
  • Online Date：2026-03-18
  • Published：2025-10-01
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  • Received：2025-05-12
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    School of Resources, Environment and Architectural Engineering, Chifeng University, Chifeng 024000, Inner Mongolia, China
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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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