节理岩体爆破块度预测的力学模型探讨

Discussion on the Mechanical Model of Jointed Rock Mass Fragmentation Forecast by Blasting

考虑到节理岩体的结构特点及岩块之间的局部非线性相互作用，运用多刚体系统动力学的理论方法，借助于Bond破碎理论，建立了节理岩体在爆炸载荷作用下块度预测的力学模型。将节理分布特征、爆破机理及块度分布计算紧密地联系在一起，避免了以往各环节脱节的不足。

In this paper, taking into account the jointed rock mass structure and local nonlinear dynamicinteracion of rocks, an mechanica model of fragmentation forecast on jointed rock mass by blast-ing is built with the multiple rigid dynamics and Bond's fragmentation theory. Firmly combinedjointed charaCteristic, blasting mechanism with fragmnentation caloulation, the insufficiency oftheir mutual disjoint previously is avoided.