液压凿岩系统对岩土介质冲击性能的仿真分析  

Simulation Analysis of Impact Performance of Hydraulic Rock Drilling System on Rock and Soil Media

作　　者：邹魁 赵翼飞 袁庆磊 马磊 ZOU Kui;ZHAO Yifei;YUAN Qinglei;MA Lei(School of Mechanical Power and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,沈阳110142

出　　处：《机械工程师》2024年第7期48-51,共4页Mechanical Engineer

摘　　要：凿岩机内部结构的变化使得岩石的吸能效率产生巨大差异。以液压凿岩系统为研究对象,考虑入射纵波能量通过此系统冲击岩土介质的过程,基于波动理论分析应力波的传播特性。建立活塞-钎具-岩土系统的动力学模型,并对其进行显式动力学冲击仿真分析,分别施加矩形入射波和指数入射波,探讨不同入射波形加载条件下能量通过液压凿岩系统传输到岩土介质中的效率。结果表明:指数入射波传播通过系统后的透射波能量较大,进而可得指数波加载条件下对岩土介质的凿击深度更大。该研究为液压凿岩机的冲击性能优化奠定了基础。Changes in the internal structure of the rock drill make a great difference in the energy absorption efficiency of the rock.Taking the hydraulic rock drill system as the research object,considering the process of longitudinal incident wave energy impacting the rock and soil medium through this system,the propagation characteristics of the stress wave are analyzed based on the fluctuation theory.The dynamic model of the piston-brazing tool-rock and soil system is established,and the explicit dynamic impact simulation is carried out to analyze the system.A rectangular incident wave and an exponential incident wave are applied to explore the efficiency of energy transfer to the rock and soil medium through the hydraulic rock drill system under the loading conditions of different incident wave shapes.The results show that the transmitted wave energy after the exponential incident wave propagation through the system is larger,which leads to a greater drilling depth in the rock and soil medium under the exponential wave loading condition.This study lays the foundation for optimizing the impact performance of hydraulic rock drill machine.

关 键 词：波动理论 冲击仿真 液压凿岩系统 冲击性能 

分 类 号：TD42[矿业工程—矿山机电]