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通过建立岩石、射流、空气的流固耦合模型,利用任意拉格朗日-欧拉算法(ALE),数值模拟研究了倾斜水射流冲击下岩石的破坏过程,分析了倾斜射流的破岩机理及影响因素。研究结果表明,倾斜射流破岩的主要形式为射流冲击所造成的卸载拉伸破坏及射流冲刷所产生的拉伸剪切破坏;随着倾斜射流入射角度的增大,破岩体积先增大后减小,存在最佳射流入射角范围;破岩体积随喷距的增加而较小。研究结果表明倾斜射流的破岩能力明显强于垂直射流,
Through the establishment of the fluid-solid coupling model of rock, jet and air, using arbitrary Lagrangian-Euler algorithm (ALE), the failure process of rock under the impact of oblique water jet was studied. Influencing factors. The results show that the main form of rock breaking by inclined jet is the unloading tensile failure caused by jet impact and tensile shear failure caused by jet erosion. With the increase of incident angle of oblique jet, the rock breaking volume first increases Decreases, and there exists the best range of incident angle of jet; the volume of rock breaking is smaller with the increase of jet pitch. The research results show that the rock breaking ability of oblique jet is obviously stronger than that of vertical jet,