(1. 浙江大学 机械电子控制工程研究所, 杭州 310027;
2. 中南大学 机电工程学院, 长沙 410083)
摘 要: 通过对钻孔偏斜的影响因素及力学特征的分析,建立了钻头偏载的力学模型,从而揭示了凿岩过程钻孔偏斜的机理,提出了控制钻孔偏斜的推进力控制方案。试验结果表明,该控制方案能够随钻孔过程中孔内钻杆质量的变化及孔内因素的变化,自动改变推进器的推进力,从而有效地控制钻孔偏斜。
关键字: 大直径深孔凿岩; 钻孔偏斜; 钻头轴压力; 推进力控制
(1. The Institute of Mechatronic Control Engineering, Zhejiang University,
Hangzhou 310027, P.R.China;
2. College of Mechanical and Electrical Engineering, Central South University,
Changsha 410083, P.R.China)
Abstract:According to the analysis of the affecting factor and mechanics performance for drilling axial deviation, the mechanical model was set up for the drill bit under offset load, thus the drilling axial deviation mechanism in theprocess of rockdrilling was revealed, the feeding force control program was proposed for controlling drilling axial deviation. The experiment results show that the control program can make the feeding force of the propulsion change automatically with the rods weight and rock properties. So the drilling axial deviation can be effectively controlled.
Key words: large-diameter blasthole rock-drilling; drilling axial deviation; drill bit axial force; feeding force control