... annular auger 环孔木钻; 环孔钻; 环形螺旋钻 auger anchor 钻锚 auger backfiller 万能螺旋钻式回填机 ...
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下锚时，锚身上向底部钻动（以提供锚抓力）的尖端部分。
The pointed part(s) of an anchor that digs into the bottom when the anchor sets
经过几年对锚杆钻机的跟踪研究，发现锚杆钻机在围岩作业中常遇到软岩中有硬岩夹层的现象，造成施工过程经常更换钻具的问题。
After several years to jumbolter research, the hard rocks always present in the soft ones in the wall rock procedure using jumbolter, which results in changing the boring tool during the procedure.
取出之后，应将原来10公厘的小洞钻为12公厘，再将新的锚栓设在同样的位置。
If appropriate, old 10mm holes should be re-drilled to 12mm and the new bolt placed in the same position.
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