基于ABAQUS仿真的水下液压破碎锤凿岩施工参数设计

Design of construction parameters for underwater hydraulic fracturing hammer rock drilling based on ABAQUS simulation

针对液压破碎锤水下凿岩施工无法可视化、施工参数难确定的问题,采用ABAQUS仿真平台进行水下液压破碎锤凿岩模拟,对凿岩施工参数设计进行理论研究。不同型号破碎锤的冲击能大小对凿岩速度的影响很大,为获得理想的施工效率,需根据岩石参数选择破碎锤型号。研究发现3个自由面条件下凿岩产生2个方向的劈裂效果,随着凿岩布孔间距少量增大,凿入深度变化不大,但劈裂效果产生的深度变化较大。对于航道疏浚平整度要求高的情况下,选择凿入深度和产生劈裂效果深度相当的布孔参数,施工效率和施工质量均能达到理想的效果。

Aiming at the problems that underwater drilling construction of hydraulic hammer can not be visualized and construction parameters are difficult to determine,ABAQUS simulation platform is used to simulate underwater hydraulic hammer drilling,and the design of drilling construction parameters is theoretically studied.The impact energy of different types of hammer has a great influence on the drilling speed.To obtain the ideal construction efficiency,the hammer type should be selected according to the rock parameters.It is found that the splitting effect in two directions is produced under the condition of three free faces.With a small increase in the spacing of drilling holes,the penetrating depth does not change,but the depth produced by the splitting effect changes greatly.when the requirement of the channel dredging smoothness is high,the construction efficiency and quality can achieve the ideal effect by selecting the hole layout parameters corresponding to the depth of penetration and the depth of the splitting effect.