脉冲水射流破岩的数值模拟研究

Numerical Simulation Study on Pulse Water Jet Crashing Rock

根据连续介质力学理论 ,导出了脉冲水射流破岩系统的控制方程。并运用瞬时最小势能原理 ,建立了脉冲水射流破岩的有限元基本列式和离散方程。数值计算的结果较为真实地反映了脉冲射流破岩过程中岩石的动态响应的演化过程 ,揭示了射流破岩过程中的机理。所得结论与相关试验规律吻合良好 ,探索了一种研究水射流破岩规律的有效方法 ,对脉冲水射流破岩的深入研究和应用具有重要的意义。

Based on the continuous mechanics theory and the principle of instant minimum position energy, this paper establishes the control equations, finite element formulations and discretized equations of pulse water jet crashing rock. The dynamic process of pulse water jet crashing rock is well simulated, and the mechanism of pulse water jet crashing rock is also analyzed. The numerical results are very good accordance with the experimental conclusion. A valid approach to study the process of pulse water jet cras...