基于FEM/SPH耦合的高压水射流扩孔效果分析

Study of effect on bore enlarging by high-pressure water jet based on FEM/SPH coupling method

结合工程实际,运用有限单元法(FEM)和无网格法中光滑质点动力学方法(SPH)耦合的数值计算方法,对高压水射流扩孔过程进行模拟,确定岩体破碎区半径,分析高压水射流扩孔效果。分析结果表明高压水射流扩孔效果明显,可用来指导高压水射流扩孔技术的进一步研究及应用。

Combined with engineering practice, this paper analyzed the process of the bore hole enlarging technology with high-pressure water jet, by using numerical simulation method coupled finite element method with smooth particle hydrodynamic which is one method of Meshless Method. The simulation determined the broken rock zone radius and analyzed the effect of enlarging bore hole with high-pressure water jet. The numerical results shows that it is a valid approach to the process of high-pressure water jet enlarging bore hole, and it can be used as a guide for the bore hole enlarging technology with high-pressure water jet for the further research and application.