煤巷顶板锚固孔钻进钻杆振动特性数值模拟研究  

Numerical simulation research on vibration characteristics of drill rod when drilling roof bolt hole

作　　者：付孟雄 刘少伟[1,2] 范凯 彭博 康延雷 贾后省 FU Mengxiong;LIU Shaowei;FAN Kai;PENG Bo;KANG Yanlei;JIA Housheng(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo,Henan 454000,China;The Collaborative Innovation Center of Coal Safety Production,Jiaozuo,Henan 454000,China;Sichuan Huayingshan Longshan Coal Co Ltd,Guang'an,Sichuan 638020,China;Dananhu No.1 Coal Mine,State Grid Energy Hami Coal and Electricity Co Ltd,Hami,Xinjiang 839000,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]煤炭安全生产河南省协同创新中心,河南焦作454000 [3]四川华蓥山龙滩煤电有限责任公司,四川广安638020 [4]国网能源哈密煤电有限公司大南湖一矿,新疆哈密839000

出　　处：《采矿与安全工程学报》2019年第3期473-481,共9页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51674098,51604094)

摘　　要：针对煤巷顶板岩层结构复杂多变、劣化区域不易探明,易导致锚杆支护煤巷冒顶问题,利用理论分析与数值模拟相结合方法,研究煤巷顶板锚固孔钻进过程中钻杆横向、纵向、扭转振动特征。理论分析表明:钻杆横向、纵向振动速度和加速度主要由顶板岩石坚固性系数f决定,扭转振动加速度主要由岩石黏聚力C和内摩擦角φ决定。通过ABAQUS数值模拟软件做进一步分析:钻杆横向、纵向振动速度和加速度及扭转振动加速度波峰密度和峰值大小随着岩石强度的增加而增加,可作为识别顶板岩层强度、特别是岩层结构裂化区域的指标。研究结论为实时动态调整优化巷道顶板锚杆(索)支护参数,预防锚杆支护煤巷冒顶提供了理论支撑。In view of the roof fall in bolt support roadways caused by the complexity of roof rock structure and the difficulty in detecting deteriorative areas, the transverse, longitudinal and torsional vibration characteristics of drill rod are studied through theoretical analysis and numerical simulation.Theoretical analysis has indicated that the velocity and acceleration of transverse and longitudinal vibration are mainly determined by the firmness coefficient f and the acceleration of torsional vibration by the cohesion strength C and internal friction angle φ. The results of numerical simulation through ABAQUS software show that the velocity and acceleration of transverse and longitudinal vibration of drill pipe and the peak density and size of torsional vibration acceleration wave increase with the rock hardness, which can be the index for identifying roof rock properties, especially in structural deteriorative areas. This paper provides theoretical supports for adjusting the support parameters of bolt in roadway roof and preventing the roof fall of coal roadway supported by bolt.

关 键 词：煤巷顶板锚固孔 煤巷冒顶 钻杆振动 岩性识别 振动速度与加速度 

分 类 号：TD353[矿业工程—矿井建设]