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首页> 外文期刊>Journal of Infrastructure Systems >Pulling Loads for Polyethylene Pipes in Horizontal Directional Drilling: Theoretical Modeling and Parametric Study
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Pulling Loads for Polyethylene Pipes in Horizontal Directional Drilling: Theoretical Modeling and Parametric Study

机译：水平定向钻井中聚乙烯管的拉力：理论建模和参数研究

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摘要

The paper presents an analytical study on the effect of borepath profile, borehole to pipe radius ratio, clearance between pipe and the borehole, and pipe stiffness on the behavior of pipes installed using horizontal directional drilling (HDD). The theoretical model used for the study is presented first. It includes most of the major components of the mechanics of HDD. The borepath is approximated as a series of linear segments and the shape of the pipe in the borepath is found considering pipe stiffness, clearance between the pipe and the soil, and the theory of large deflections of flexible bars. Based on the pipe shape, the contact forces between the pipe and the borepath are calculated. The contact forces cause friction and thus axial pulling force is induced to overcome the frictional forces. The puiling force for the pipe is calculated to equilibrate weight of the pipe and friction between the pipe and the soil and the pipe and the drilling fluid. In order to verify the formulation, the model is used to study the stresses and strains on two pipes that were tested in the field. The developed theoretical model is then used to study the influence of the above parameters on the pulling force applied to the pipe during HDD.
机译：本文对井径剖面，井眼与管径之比，管与井眼之间的间隙以及管刚度对使用水平定向钻探（HDD）安装的管道性能的影响进行了分析研究。首先介绍用于研究的理论模型。它包括HDD机理的大多数主要组成部分。钻孔路径近似为一系列线性段，并且考虑到管道刚度，管道与土壤之间的间隙以及挠性杆的大挠度理论，可以找到钻孔路径中的管道形状。根据管道形状，计算管道与井道之间的接触力。接触力引起摩擦，因此产生轴向拉力以克服摩擦力。计算管道的拉力以平衡管道的重量以及管道与土壤，管道与钻井液之间的摩擦。为了验证配方，该模型用于研究在现场测试的两条管道上的应力和应变。然后，使用开发的理论模型来研究上述参数对HDD期间施加到管道的拉力的影响。

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