导向钻进非开挖铺管的导向强度研究

初步探讨、分析了影响钻孔轨迹设计的重要参数——导向强度（单位钻进长度钻孔顶角的变化量,°／m）。通过对导向钻具进行整体受力分析,建立了导向强度模型,得出了造斜初始阶段在岩土阻力和钻具弯曲影响下导向强度的计算公式,并根据所得公式对影响导向强度的主要因素进行了分析,得出了一些结论。还通过室内实验对连续钻进导向强度的规律作了定性说明。

Classification of Build-up Intensity in Trenchless Technology for Pipe Laying

The paper discussed and analyzed an important parameter -- build-up intensity （ the drift angle＇ s change of drilling hole in one meter length drilling, degree/meter） which influences the hole section designed. It has established the build-up intensity model through the whole stress analysis on drilling tool and has obtained the formula of build-up intensity affected by the resistance of soil and the curve of drilling tool in the preliminary, stage of angle building. Then it analyzes the primary factors that affect the build-up intensity in the basis of formula and has got some conclusions. This paper also gives qualitative explanation on the rule of continuous build-up intensity by indoor tests.