管线

Therefore, this paper analyzes the influences of pipeline length and diameter on the annularly carrying cutting parameter through calculating the friction resistance of pipelines with different geometrical size.

为此，通过对不同几何尺寸排砂管线的摩阻的计算，重点对比分析了排砂管线长度、直径对环空携岩参数的影响，为今后气体钻井排砂管线优选提供了重要的参考依据。

The patterns of pipeline failure include transverse fracture caused by longitudinal bending moment and joint leakage of flexible pipes.

影响管线变形的主要因素包括管线与隧道的相对位置、管线的弯曲刚度和土体的强度。

Excessive formation back pressure may be due to limited or plugged perforations; subsurface or surface chokes; undersized gas-oil separator, flowlines, tubing, or casing; or excessive back pressure on flowline, casinghead gas gathering system, or gasoil separator.

183u 译文：过高的地层回压也许是由于有限的或堵塞的射孔孔眼；井下或地面油嘴；尺寸不足的气液分离器，流动管线，油管或套管；流动管线，套管头气体集输管线或气，油分离器上过高的回压。

In the numericalstudy, three-dimensional elastodynamics equations and Morison equation are applied tosimulate the time histories of dynamic response of submarine pipelines suspended over flatbeds sucessfully. The three-dimensional interaction of pipeline and internal flow isnumerically simulated by applying the iterative computation to the fluid-structure interfacesand using the elastodynamic equation and the incompressible fluid N-S equation andcontinuity equation.

在数值研究方面，本文利用三维弹性动力学方程，结合莫里森方程，较好地模拟了规则波浪作用下近壁悬跨弹性海底管线动力响应过程，结合不可压缩流体N-S方程和连续方程，进行管线及其内部流体的三维流固耦合数值计算，基于数值计算结果探讨内流管线系统的动力特性和管内流体特征。

Moreover,a numerical model of embeded pipeline/soil interaction under complex wave laod is developed, the behavior of pipeline in the liquefied soil is simulated base on finite distortion theory, finaly the influence factors are analysed and a set of conclusions are put forward.

建立了复杂波浪荷载作用下埋置管线与周围土体相互作用的数学模型，并基于大变形理论，对管线在液化土体中的移动进行了模拟，并对影响土体液化和管线在液化土体中行为的因素进行了分析。

According to embedding depth of gaspipe, the measurements controlling the settlement of surface and pipeline are put forward. For the shallow-buried pipe, open cut method is used.

针对地表和管线沉降过大可能引起燃气管线破坏的实际情况，按照管线埋置深度，提出了分级控制地表和管线沉降的措施。

The main factors of affecting the stability of submarine pipeline are analyzed, and the result shows: effect of Wake has disadvantage for pipeline stability, weight of per length unit pipeline is a important factor affect the stability of pipeline.

根据所建模型对影响裸置管线横向稳定性的各项因素分析表明，忽略尾流的影响会严重高估裸置管线的在位稳定性，影响管线稳定性最主要的因素是单位长度管线重量。

Based on the experience from constructing the underground colligated pipeline information system in Quanzhou City, this paper describes the application of GeoPipe Pipeline information system in pipeline centralized management, and then discusses how to prevent and deal with some pipeline urgent accident.

本文结合泉州市地下综合管线信息系统建设的经验，探讨了GeoPipe管线信息系统在管线的统一管理中的应用，以及如何利用该系统预防和应对地下管线突发事故等基本问题。

In the way of prophase preparing, this paper emphasizes the importance of full collecting inhering under pipe using no-dig horizontal directional drilling paving in the busy street and emphasizes the exploration technology being the main mean of inhering under pipe. Thus it can provide the main pledge measure of under pipe security and operator security.

在前期准备方面，本文强调在闹市区采用非开挖定向钻进铺设地下管线时全面收集原有地下管线资料的重要性，强调物探技术是对原有地下管线探查的重要手段，即保证原有地下管线安全性及操作人员人身安全的重要保证措施。

That means that we take maximum settlement value as an objective value, that is, to control surface settlement is to control pipeline deformation. Its research paths are to make decision of computational method of maximum surface settlement and settlement pattern firstly; then to establish the relationship between maximum surface settlement and ground pipeline deformation and strain, to get maximum surface settlement in term of th

研究思路是：首先要搞清楚地表沉降的规律以及地表最大沉降值的计算方法：然后研究地表最大沉降值W.x与地下管线的变形及应变的关系，从而可以根据管线与隧道的相对位置、地层条件、管线的允许变形情况求出w皿厂这样通过控制地表最大沉降值w删x就可以间接控制隧道工程对地下管线的影响。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。