水力高能束磨料占比对木料冲蚀影响分析

Analysis of the Influence of Abrasive Water Jet on Wood Erosion by Abrasive Ratio

山区河流洪水泛滥,漂浮物聚集与江面形成漂浮复合体,极易导致系泊航标、船舶锚缆走锚、失控及侧翻,严重影响通航安全。解决漂浮复合体竹木清除难题已成为山区河流系泊安全工作的迫切需求。为此,提出一种锚缆缠绕物清除方法。在此基础上,通过数值分析软件ANAYS的LS-DYNA模块,建立水力高能束磨料占比对木料冲蚀影响的相互作用模型,研究掺料占比对木料冲蚀效果的影响,为锚缆缠绕物清除装置的研发提供技术支撑。结果表明,掺料水力高能束冲蚀过程中的水柱速度要比纯水更加集中,在冲蚀过程中对靶体的应力大于纯水,冲蚀深度优于纯水,但随着磨料占比的增加这种影响并不增大,磨料的有无对其木料冲蚀口径的大小影响甚微。

In mountainous areas,the flooding of rivers causes the accumulation of floating debris,forming a floating composite on the river surface.This can easily lead to dragging off mooring navigation marks,ships’anchor cables coming loose,loss of control,and capsizing,severely impacting navigational safety.The removal of bamboo and wood debris in the floating composite has become an urgent need for the safety work of mooring in mountainous river areas.A method is proposed for removing anchor cable entanglements.Based on this,the LS-DYNA module of the numerical analysis software ANAYS is utilized to establish a model of the interaction between the proportion of high-energy abrasive particles in hydraulic jets and their erosion effect on wood materials.The research investigated the influence of abrasive particle proportions on the erosion effect of wood materials,providing technical support for the development of devices for removing anchor cable entanglements.The results show that during the erosion process of abrasive particles in hydraulic jets,the water column velocity is more concentrated compared to pure water.The stress on the target body during erosion is greater than with pure water,resulting in better erosion depth compared to pure water.However,the increase in abrasive particle proportion does not significantly increase this impact,and the presence or absence of abrasive particles has minimal effect on the size of the erosion aperture on wood materials.