Research on Dynamic Properties of Deep Marble Influenced by High Temperature

Xianglong Li, Yongbo Wu, Lihua He, Xiaohua Zhang and Jianguo Wang
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Xianglong Li: Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
Yongbo Wu: Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
Lihua He: Faculty of Mining Industry, Kunming Metallurgy College, Kunming 650033, China
Xiaohua Zhang: Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
Jianguo Wang: Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China

Mathematics, 2022, vol. 10, issue 15, 1-16

Abstract: Deep rock will be influenced by the excavation disturbances of different degrees, which seriously affects the safety production of underground mines. Considering that deep rock will be impacted by different temperatures and varied disturbance degrees, this work analyzes the effect of temperature on the dynamic properties of marble by means of the dynamic and static combined SHPB test device. The results reveal that as the temperature climbed, the diameter and height of the specimen increased and the mass and longitudinal wave velocity dropped. The variation laws of total stress–strain curves after varied high temperatures are substantially the same; the peak stress was negatively correlated with the action temperature. At 25 °C~400 °C, the failure mode of specimens is less affected by temperature. When the temperature is higher than 400 °C, the failure degree of specimens increases with the growth of temperature. At 25~400 °C, the above energy varies minimally. At 400~800 °C, with the increase in temperature, the incident energy, transmitted energy and absorption energy decrease, and the reflection energy increases gradually.

Keywords: high-temperature marble; SEM; dynamic properties; crack propagation (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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