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基于煤巷顶板锚固孔钻进过程中钻杆存在横向振动、纵向振动、扭转振动,且岩石的响应力与反扭矩是钻杆发生3种振动的主要原因.利用数值计算方法,对λ=1.0~1.5条件下,煤巷顶板几种常见的岩石模拟钻进,获取了4种岩石对钻杆的响应力与反扭矩,并得到了钻杆的振动特征,发现应力状态的改变对钻杆振动特征影响不明显,钻杆在砂岩中钻进时主要振动形式以横向振动为主,在砂质泥岩中钻进时以纵向振动为主,在泥岩和软弱夹层中钻进时以扭转振动为主.钻杆横向和纵向振动响应频率按由大到小顺序依次为:砂岩、砂质泥岩、泥岩、软弱夹层.扭转振动响应频率按由大到小顺序依次为:泥岩、砂岩、砂质泥岩、软弱夹层.
The main reason for the three kinds of vibration occurred in the drill pipe is the existence of the transverse vibration, the longitudinal vibration and the torsional vibration of the drill pipe during the drilling process of the anchorage hole in the roof of coal roadway. The response of the rock and the torsional moment are the main causes of the three kinds of vibration. ~ 1.5, coal seam roof several common rock simulation drilling, access to the four kinds of rock on the drill pipe response and anti-torque, and got the vibration characteristics of the drill pipe and found that the stress state changes on the drill pipe vibration There is no obvious influence on the characteristics of the drill pipe. When the drill pipe is drilling in the sandstone, the main form of vibration is transverse vibration. When the drill is moved into the sandy mudstone, the longitudinal vibration is dominant. When drilling, the mudstone and the weak interlayer are dominated by torsional vibration The frequency of horizontal and vertical vibration responses of drill pipe in descending order are as follows: sandstone, sandy mudstone, mudstone and weak interlayer.The torsional vibration response frequencies are in descending order: mudstone, sandstone, sandy mudstone, Weak sandwich.