摘要
利用应变和压电测试系统以及随机信号和振动分析系统,在模型和试验钻机上,进行了钻柱系统的固有频率、响应、钻头的动态压力、功率谱和动态传递函数等测试分析。在横向振动支承条件,岩石的刚度以及动态碎岩机理等方面得到了一些有益的研究结果,并提出了岩石刚度动态测定法。以上研究为理论分析提供了依据。
Using strain and piezoelectric measuring sets and random signal and vibra-tion nalysis system,the drillstring system′s natural frequency,response,dynamicpressure of drill it,power spectrum and dynamic transfer function etc.havebeen measured and analysed in rillstring model and test drill rig.Some bene-fical research results have been obtained in ransverse vibration support,rock stif-fness and dynamic rock breaking mechanism etc.and the ynamic measuringmethod of rock stiffness has been presented.This research will provide basis ortheoretical analysis.
基金
国家自然科学基金
关键词
钻头
钻柱系统
振动
测试
drillstring
vibration measurement and analysis
