2) pipeline back-dragging
管道回拖
1.
Computer simulation can overcome many difficulties such as the lack of ground and money,too many parameters,and time span when simulating the pipeline back-dragging in directional drilling with ANSYS and APDL.
采用ANSYS并结合APDL语言对定向钻的管道回拖过程进行仿真,对回拖管道的应力和变形以及回拖力进行了分析,得出了管道应力沿中性轴径向对称分布,且距离中性轴越远值越大的规律。
3) back dragging force
回拖拉力
1.
Calculation of back dragging force of horizontal directional drilling machine;
应用水平定向钻安装管道时回拖拉力的计算方法
4) pull-back force
回拖力
1.
Because of the complicated operation conditions, the pull-back force of pipeline crossing by horizontal directional drilling depends on the combined actions of various factors.
因为实际工况比较复杂,水平定向钻穿越的回拖力是各种因素共同作用的结果,所以,很难建立起与实际工况非常吻合的、具有普遍适用性的力学模型。
5) pipeline float and drag method
管道浮拖法
补充资料：拖
拖 即托子，或托泥，民间工匠俗称“拖”。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条