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。
According to the analysis of the affecting f actor and mechanics per formance for drilling axial deviation, the mechanical model was set up for the dr ill bit under offset load, thus the drilling axial deviation mechanism in the pr ocess of rock-drilling 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 chang e automatically with the rods weight and rock properties. So the drilling axial deviation can be effectively controlled.
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