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.
关键词
矿岩/弱化特性/破碎动力系统/能量传递/破岩时效
Key words
mineral rock/weakened property/dynamical system for rock breakage/energy transformation/time effectiveness of rock breakage
维普
万方数据