【摘要】 应用伪张力法，研究了在压应力状态下岩石内部任意多条随机微裂隙的相互作用和扩展聚集机理．即在受载岩石裂隙的相互作用下，形成一个裂隙较易聚集的方向，岩石的宏观破裂与此方向有关．给出了岩石宏观破裂判据，并确定了破裂面的方位．指出库仑准则所确定的初始剪切破裂方向仅为本文的一个特例．作为实例分析了雁形裂纹的形成和扩展机制．更多还原

【Abstract】 The mechanism of the Interaction and coalescence between arbitrarily distributed cracks in brittle rocks under the compression has been studied in this paper with the help of the method of pseudotraction.The criteria that can predict the orientation of the fracture of the macro-failure have been derived.In the meantime the paper shows that the direction of the initial shear failure predicted by COU-LOMBcriterion is one of the diterions directions given by the authors.As a practical case,this model has been applied to en echelon cracks.更多还原