Energy Transformation and Time Effectiveness of Dynamical System for Breaking Weakened Mineral Rock
WANG Xueqing1,2, TANG Hongping2, WANG Jianhua2, ZOU Yu1
1.School of Mechanics & Civil Engineering, China University of Mining & Technology-Beijing, Beijing 100083, China;
2.State Key Laboratory of Exploitation and Utilization of Deep Sea Mineral Resources, Changsha 410012, Hunan, China
Abstract：Based on typical nonlinear negative exponent constitutive relations and catastrophe characteristic of weakened mineral rock, the variation of energy transformation and time effectiveness with mechanism stiffness in catastrophic and non-catastrophic breakup were analyzed. The results show that the catastrophic breakup induced by low mechanism stiffness will dramatically reduce the energy transformation efficiency of dynamical system and time effectiveness of rock breakage. From the perspective of energy utilization and rock-breaking efficiency, it is not appropriate to equip a dynamical system for rock breakage with low mechanism stiffness. Finally, an appropriate range of mechanism stiffness is provided for reference in design.
汪学清, 唐红平, 王建华, 邹煜. 弱化矿岩破碎动力系统的能量转化和时效特性[J]. 矿冶工程, 2024, 44(1): 25-30.
WANG Xueqing, TANG Hongping, WANG Jianhua, ZOU Yu. Energy Transformation and Time Effectiveness of Dynamical System for Breaking Weakened Mineral Rock. Mining and Metallurgical Engineering, 2024, 44(1): 25-30.
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2024, Vol. 44 
