【摘 要】
：
弯强作为水平定向钻进曲线段设计中的一个关键参数,设计时如果采用较大的弯强,则可以减少造斜进尺、缩短钻进距离、节省工程施工费用;但弯强过大将会造成钻具的磨损加剧,甚至
【机 构】
：
中国地质调查局水文地质环境地质调查中心,中国地质大学(武汉),中国地质大学,
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弯强作为水平定向钻进曲线段设计中的一个关键参数,设计时如果采用较大的弯强,则可以减少造斜进尺、缩短钻进距离、节省工程施工费用;但弯强过大将会造成钻具的磨损加剧,甚至钻具不能顺利过孔以及钻杆折断事故等等诸多的不利因素。为解决这一突出矛盾,通过对曲线段作为铺管段时、保证钻具顺利过孔以及钢质钻杆柱安全工作的三个因素运用数学力学计算方法进行综合分析和计算,得出了曲线段设计的极限弯强,并在盐碱地改良项目施工中得到了验证。
Bending strength is one of the key parameters in the design of curve section of horizontal directional drilling. If larger bending strength is adopted during design, the slanting length can be reduced and drilling distance can be shortened, which can save construction cost; however, excessive bending will result in Drill wear and tear worse, and even drilling tools can not be successfully through holes and drill pipe breakage accidents, and many other unfavorable factors. In order to solve this prominent contradiction, through the mathematical analysis of the three factors that ensure the smooth passing of the drilling tool and the safety work of the steel drill string when the curved section is used as the pipe laying section, the curve section The design of the ultimate bend, and in the saline-alkali soil improvement project construction has been verified.
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