初步研究了含硬包体试样在双轴加压时试样的最终破裂形式及硬包体的变化状况.岩样破裂形式侧向以压剪裂为主,表面出现两类:一类为走滑伴以逆冲断裂;另一类为冲断裂.当岩样内的硬包体与试样为硬接触时,则硬包体有的破裂,有的未破;为软接触时,则主破裂绕过硬包体.最后,分析了在一定条件下,岩样内的硬包体形成应力集中、屈服、软化直至破裂的过程 The final rupture pattern of hard inclusions and the change of hard inclusions in biaxial compression test were studied preliminarily.The rupture patterns of rock specimens were dominated by compression shear and the surface appeared two types: Slippery with compasses thrusting; the other is blunt fracture.When the hard inclusions in the rock specimen and the specimen are in hard contact, then some of the hard inclusions rupture, some are not broken; when soft contact, then The main rupture around the hard inclusions.Finally, under certain conditions, the formation of hard inclusions in the rock samples to form the stress concentration, yield, soften until the rupture process