Study on dynamic characteristics and energy dissipation of frozen rock with ice-containing structural plane

Lei WANG; Zhiqin LI; Feifei MA; Pengwei LEI; Yuanpeng WANG; Shiguan CHEN; Chao YUAN

doi:10.13347/j.cnki.mkaq.20231560

Meikuang Anquan (Apr 2025)

Study on dynamic characteristics and energy dissipation of frozen rock with ice-containing structural plane

Lei WANG,
Zhiqin LI,
Feifei MA,
Pengwei LEI,
Yuanpeng WANG,
Shiguan CHEN,
Chao YUAN

Affiliations

Lei WANG: School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Zhiqin LI: School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Feifei MA: Department of Architecture and Engineering, Shandong Water Conservancy Vocational College, Rizhao 276826, China
Pengwei LEI: School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Yuanpeng WANG: School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Shiguan CHEN: School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Chao YUAN: College of Sciences, Xi’an University of Science and Technology, Xi’an 710054, China

DOI: https://doi.org/10.13347/j.cnki.mkaq.20231560
Journal volume & issue: Vol. 56, no. 4
pp. 127 – 135

Abstract

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To study the dynamic characteristics and energy dissipation law of ice containing fractured rocks under low temperature (−10, −20 ℃) conditions, a split Hopkinson pressure bar (SHPB) was used to conduct uniaxial impact failure tests on low-temperature ice containing fractured rocks under different loading strain rates; the propagation and attenuation characteristics of stress waves in ice-rock structural plane, dynamic response characteristics of frozen rock with ice-rock structural plane, energy dissipation mechanism and failure mechanism are studied to provide reference for the freezing parameter design of water-rich fractured rock. The test results showed that under different impact rates, the dynamic characteristics and energy dissipation per unit volume of frozen rocks with ice-containing structural planes had a significant strain rate effect. The stress-strain curve showed a three-stage trend, and the dynamic compressive strength and peak strain showed strong strain rate effect; as the strain rate increases, the incident energy, reflected energy, and dissipated energy all increase significantly.

Published in Meikuang Anquan

ISSN: 1003-496X (Print)
Publisher: Editorial Office of Safety in Coal Mines
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.mkaqzz.com/indexen.htm

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