Comparative study on dynamic response and energy evolution of tuff and limestone
YE Haiwang1, 2, 3, LI Rui1, YU Yan4, SHANG Fengchuan5, DONG Yefeng6, SHI Binhong4, LEI Tao1, 2, 3*, WANG Qizhou1, 2, 3, LI Ning1, 2, 3, YU Menghao1, LI Xinping7
(1. School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China; 2. Ministry of Education Key Laboratory of Key Non-metallic Mineral Resources Green Utilization, Wuhan, Hubei 430070, China; 3. Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan, Hubei 430070, China; 4. Huaxin Cement Co., Ltd., Wuhan, Hubei 430070, China; 5. Tianjin Mining Engineering Co., Ltd., Tianjin 300073, China; 6. Chuzhou Langyashan Mining Engineering Technology Co., Ltd., Chuzhou, Anhui 239000, China; 7. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, Hubei 430070, China)
Abstract：In order to compare the dynamic mechanical response and energy evolution laws of tuff and limestone, the uniaxial compressive loading tests with strain rate varying from 40 s－1 to 200 s－1 on the two rocks were carried out using the 50 mm diameter split Hopkinson pressure bar (SHPB) system, and the test phenomena were reasonably interpreted from the microscopic and mesoscopic perspective by combining with X-ray diffraction and nuclear magnetic resonance (NMR) tests. Based on the statistical damage theory of Weibull distribution, the damage differences between tuff and limestone under different strain rates are analyzed. The results show that with the increase of strain rate, the dynamic compressive strength, energy absorption rate and energy consumption density of the two rocks increase, existing a significant strain rate effect. Tuff contains high-hardness quartz and feldspar minerals, and its dynamic compressive strength is higher than that of limestone. In addition, tuff has a complex mineral composition and poor internal pore connectivity, resulting in higher energy absorption rates and energy consumption density. In contrast, limestone is primarily composed of softer calcite minerals and has better pore connectivity, exhibiting greater strain rate sensitivity but lower damage levels.
叶海旺1，2，3，李 睿1，于 燕4，尚凤川5，董业锋6，石斌宏4，雷 涛1，2，3*，王其洲1，2，3，. 凝灰岩和石灰岩动力响应及能量演化对比研究[J]. 岩石力学与工程学报, 2026, 45(S1): 1-15.
YE Haiwang1, 2, 3, LI Rui1, YU Yan4, SHANG Fengchuan5, DONG Yefeng6, SHI Binhong4, LEI Tao1, 2, 3*, WANG Qizhou1, 2, 3, LI Ning1, 2, 3, YU Menghao1, LI Xinping7. Comparative study on dynamic response and energy evolution of tuff and limestone. , 2026, 45(S1): 1-15.
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2026, Vol. 45 
