Understanding energy transformation mechanism of rockbursts through experimental and theoretical methods

IF 7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL International Journal of Rock Mechanics and Mining Sciences Pub Date : 2024-07-06 DOI:10.1016/j.ijrmms.2024.105827

Wenju Liu , Fuqiang Gao , Shuangyong Dong , Shuwen Cao

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Abstract

Understanding the energy transformation mechanism in rockbursts is essential for predicting and mitigating potentially catastrophic rock failures. In this study, Double Springs Release Tests (DSRTs) were proposed in a laboratory setting to investigate the energy transformation of rockbursts from inception to development. High-speed cameras and image processing algorithms were utilized to calculate different types of energy throughout the duration of the burst. Theoretical analyses, grounded in structural dynamics and stress wave equations, was conducted and cross-referenced with the experimental results. The study found that wave impedance $\sqrt{ρ E}$ is a key indicator of burst intensity. The research demonstrated that the impact energy in DSRTs originates from both the impact medium and the surrounding medium, and explored how these two components contribute to the total impact energy of the impact medium.

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通过实验和理论方法了解岩爆的能量转换机制

了解岩爆的能量转换机制对于预测和减轻潜在的灾难性岩石破坏至关重要。本研究提出在实验室环境中进行双弹簧释放试验 (DSRT)，以研究岩爆从开始到发展的能量转换过程。利用高速摄像机和图像处理算法来计算岩爆整个过程中不同类型的能量。以结构动力学和应力波方程为基础进行了理论分析，并与实验结果相互参照。研究发现，波阻抗是爆破强度的关键指标。研究表明，DSRT 的冲击能量来自冲击介质和周围介质，并探讨了这两部分如何对冲击介质的总冲击能量做出贡献。

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来源期刊

International Journal of Rock Mechanics and Mining Sciences 工程技术-工程：地质

CiteScore

14.00

自引率

5.60%

发文量

196

审稿时长

18 weeks

期刊介绍： The International Journal of Rock Mechanics and Mining Sciences focuses on original research, new developments, site measurements, and case studies within the fields of rock mechanics and rock engineering. Serving as an international platform, it showcases high-quality papers addressing rock mechanics and the application of its principles and techniques in mining and civil engineering projects situated on or within rock masses. These projects encompass a wide range, including slopes, open-pit mines, quarries, shafts, tunnels, caverns, underground mines, metro systems, dams, hydro-electric stations, geothermal energy, petroleum engineering, and radioactive waste disposal. The journal welcomes submissions on various topics, with particular interest in theoretical advancements, analytical and numerical methods, rock testing, site investigation, and case studies.