【摘要】 为了研究炮孔附近爆破损伤范围,结合具体工况引入爆破损伤因子,基于JHC本构模型,运用LS-DYNA显式非线性动力分析有限元程序分别建立单孔直径140mm、250mm和直径140mm、250mm双孔微差爆破的准平面应变有限元模型,并得出相应的爆破损伤范围,为生产爆破设置合理爆破孔网参数提供了理论依据。更多还原

【Abstract】 In order to study the blasting damage range in the vicinity of boreholes and based on the JHC constitutive model,blasting damage factor is introduced according to the concrete operating conditions,using LS-DYNA finite element program with explicit nonlinear dynamical analysis respectively to establish plane strain models of single borehole with diameter of 140mm and 250mm,and millisecond blasting of double holes with diameter 140mm and 250mm.And the corresponding blasting damage range is obtained to provide a theoretical basis for setting the reasonable parameters for the blasting borehole pattern.更多还原