摘要
针对煤矿井下坑道钻探安全高效发展的技术需求,阐述了煤矿坑道回转钻进动力学技术系统组成及工作特征。从钻进装备系统动力学、钻柱动力学和钻头破岩动力学等3个方面评述了相关技术领域的主要研究成果。结合煤矿井下坑道钻探特点,分析了当前煤矿坑道回转钻进动力学研究现状及存在问题,包括亟待解决的多技术系统与工作环境的一体化动态模型建立,复杂交变载荷下的钻柱动力学研究途径以及PDC钻头高效破岩问题等。探讨了煤矿坑道回转钻进动力学研究的发展方向:其一,需实现煤矿坑道钻进系统多领域建模与仿真,初步建立钻探设备机械、液压、电气、控制、信息等模型库,针对钻探施工中钻机钻进参数、泥浆泵压及控制信息感知等具体施工应用中建立系统级模型,形成多学科耦合对钻进技术系统动力学性能进行综合分析和预测。其二,借助半物理仿真试验将钻探对象实体特性在虚拟环境下的动态特性试验中分析得出,通过建立数学模型、编程、交互反馈等技术流程在计算机上运行,进一步得到动力头转矩、给进/起拔力、泥浆泵压力等钻探系统主要参数的动态反馈。随着煤矿坑道回转钻进动力学研究的不断深入,有助于进一步提高煤矿井下钻探技术与装备设计水平,为实现煤矿安全高效智能钻探提供技术参考。
In view of the technical requirements of safe and efficient development of underground drilling in coal mine,the paper presents the composition and work characteristics of the technical system of underground rotary drilling in coal mine. The relevant main research achievements are analyzed and commented,which are drilling rig system dynamics,drill string dynamics and rock breaking of drill bit dynamics. Based on the characteristics of underground rotary drilling in coal mine,the results and problems of current rotary drilling dynamics are analyzed. It includes the establishment of integrated dynamic model of multi-technology system and working environment,the research way of drill string dynamics under complex alternating load and the problem of efficient rock breaking by PDC bit. The development direction of underground drilling dynamics is discussed in this paper. Firstly,multi-domain modeling and simulation of underground drilling system should be realized. The machinery,hydraulic,electrical,control,information and other model library of drilling rig needs to be established preliminarily. A system-level model is established for drilling parameters,mud pump pressure,control information perception and other specific construction applications in drilling construction,and a multidisciplinary coupling is formed to comprehensively analyze and predict the dynamic performance of drilling technology system. Secondly,we can try to analyze the dynamic characteristics of drilling object in virtual environment through semi-physical simulation test. Through the establishment of mathematical model,programming,interactive feedback and other technical processes in the computer operation,further obtained the power head torque,feed/pull force,mud pump pressure and other drilling system main parameters of the dynamic feedback. The research on underground rotary drilling dynamics in coal mine will be helpful to further improve the level of underground drilling technology and equipment design,and provide reference for safe and efficient intelligent drilling in coal mine.
作者
张幼振
徐信芯
阚志涛
ZHANG Youzhen;XU Xinxin;KAN Zhitao(Xi’an Research Institute,China Coal Technology & Engineering Group Corp.,Xi’an 710077,China;School of Construction Machinery,Chang’an University,Xi’an 710064,China)
出处
《煤炭科学技术》
CAS
CSCD
北大核心
2019年第1期145-151,共7页
Coal Science and Technology
基金
国家自然科学基金资助项目(51774320
51805041)
陕西省自然科学基金资助项目(2017JQ5081)
关键词
坑道钻探
回转钻进
机械动力学
钻柱动力学
钻头破岩
underground drilling
rotary drilling
mechanical dynamics
drill string dynamics
rock breaking of drill bit
