气液联合式冲击器工作状态参数的研究

摘要

On the basis of the work principles of pneumatic-hydraulic impactor ,the paper construc-ted the mathematical model of the impactor and rock mechanics properties during the process of im-pact drilling ,the co-simulation was carried out based on MATLAB and AMESim ,the work status pa-rameter curve of impactor was obtained under the conditions of different feedback pressures of nitro-gen chamber ,different work flows and different rock properties .The simulation results suggest that , adjusting feedback pressure of nitrogen chamber and work flow can realize the regulation of impact en-ergy continuously ,measurement of piston rebound speed of the impact system can realize the identifi-cation of drilling status of the iimpactor .%在气液联合式冲击器工作原理的基础上，构建了冲击凿岩过程中冲击器和岩石力学特性的数学模型，并运用MATLAB和AMESim软件进行了联合仿真，获得了不同氮气室反馈压力、不同工作流量以及不同岩石特性条件下冲击器工作状态参数的曲线。仿真结果表明：对氮气室反馈压力和工作流量进行调节，可实现冲击器输出冲击能的无级调节；通过冲击系统活塞回弹速度的测量，可实现冲击器凿岩状态的辨识。