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在旋挖钻机钻孔施工过程中,卡钻故障比较常见,表现为钻斗上提、下放困难,或者正、反旋转不顺畅。卡钻故障发生后,往往会给施工方带来较大心理压力,一旦处理不当极易造成严重的埋钻事故,导致巨大损失。我们分析卡钻故障发生的原因,提出处理措施,并以重庆新白沙沱大桥桩基钻孔过程中遇到的卡钻故障为例,进行分析和处理。1.卡钻原因及处理措施根据旋挖钻机施工经验,发生卡钻故障主要有3种情况,现将其故障原因及处理方法分
In the drilling rig drilling process, stuck more common failure, manifested as drilling bucket lift, decentralization difficulties, or positive, anti-rotation is not smooth. Card stuck after the failure, often to the construction side to bring greater psychological pressure, once handled properly can easily lead to serious burial, resulting in huge losses. We analyze the causes of the stuck-stuck faults, propose the measures to deal with them, and analyze and deal with the stuck-pipe faults encountered in the process of pile foundation drilling of Chongqing Baisha Tuo Bridge. 1. Card Drill Reasons and Measures According to the rotary drilling rig construction experience, there are three major stuck card failure, now the cause of the failure and treatment methods points