岩石在磨料射流作用下破坏机理

描述了岩石材料在磨料射流的冲击下破坏的主要原因，分析了应力波就是岩石局部受到拉伸和剪切井最终使岩石发生破坏的根本因素，在这一假设的前提下采用波动理论建立了岩石受应力波作用的力学模型即射流波动的基本方程，在已知的边界条件下推导出了由波动引起的最大正应力的计算公式。通过该公式对具体实例进行了理论计算，并把该计算结果与在河南油田所进行的地面磨料射流割缝的现场实验结果进行了比较，证明两种结果吻合的较好．说明这种理论分析方法是可行的。

Destruction mechanism of rock on abrasive jet action

In the process of impact of abrasive jet on rock,resulting dynamic stress plays an important role in rock destruction.The stress wave resulted makes local rock tensile and shearing,then makes rock destructed.In the conditions of some hypotheses,the mechanical model that rock is applied by stress wave,i.e.jet wave basic equations,are set up by wave theory,and the formula of the maximum normal stress resulted by stress wave is deduced according to known boundary conditions.The theoretical computing result by the formula is compared to the experimental result of abrasive jet cutting in-situ in Henan Oil Field,which is proved to be coincident with experimental result and this shows the theoretical method is feasible.