The upgraded drum locking device has integral drum locking blocks and a float screw rod, with the antivibration performance improved and the thread clearance eliminated.
改进的穿孔机转鼓器结构，采用整体压鼓块和浮动丝杆，消除了螺纹间隙，提高了抗振性能。
The technology of finishing float resisting anchor rod construction in deep sand layer with geological drilling rig slurry retaining wall technology is analyzed briefly.
现简要分析利用地质钻机泥浆护壁成孔工艺完成深厚砂层中抗浮锚杆的施工工艺。
As there is no unified standards of failure for the soil float resisting anchor rod test, the parameters of pulling-resistance are discrete, which often led to incorrect design.
因抗浮锚杆试验没有统一的破坏标准，测出的抗拔参数差异大，不能正确指导设计。
As there is no unified standards of failure for the soil float resisting anchor rod test, the parameters of pulling-resistance are discrete, which often led to incorrect design.
因抗浮锚杆试验没有统一的破坏标准，测出的抗拔参数差异大，不能正确指导设计。
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