(1. 浙江大學(xué) 機(jī)械電子控制工程研究所， 杭州 310027；
2. 中南大學(xué) 機(jī)電工程學(xué)院， 長(zhǎng)沙 410083)
摘 要: 通過對(duì)鉆孔偏斜的影響因素及力學(xué)特征的分析，建立了鉆頭偏載的力學(xué)模型，從而揭示了鑿巖過程鉆孔偏斜的機(jī)理，提出了控制鉆孔偏斜的推進(jìn)力控制方案。試驗(yàn)結(jié)果表明，該控制方案能夠隨鉆孔過程中孔內(nèi)鉆桿質(zhì)量的變化及孔內(nèi)因素的變化，自動(dòng)改變推進(jìn)器的推進(jìn)力，從而有效地控制鉆孔偏斜。
關(guān)鍵字: 大直徑深孔鑿巖； 鉆孔偏斜； 鉆頭軸壓力； 推進(jìn)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
