腐蚀是引起海底管线破坏的一种重要原因。
Corrosion is one of the main factors causing the damage of submarine pipelines.
该公式可为海底管线的工程设计提供参考。
The formula would be beneficial to the engineering design of the pipelines.
介绍采用砂被保护海底管线的新方法及施工过程。
It introduces the new method and construction process of seabed pipeline protection by adopting sand quilt.
海底管线铺设是一项高难度、高风险的海上作业。
The laying of pipelines is a task with high difficulty and high risk.
地震荷载作用下海床液化是海底管线失稳的主要原因之一。
The liquefaction of seabed under seismic load is one of the main reasons that govern the global stability of submarine pipeline.
以埕岛油田为例 ，介绍海底管线停输时间及再启动压力的计算方法。
Taking Chengdao Oil Field as an example, the methods for calculating the shutdown time, temperature dropping and restart pressure of submarine pipeline are introduced.
最后结合理论分析，给出提高海底管线断裂带上适应能力的工程建议。
At last, some advices are given to improve the adaptive capability of offshore pipelines against the fault displacements.
管跨结构的涡激振动分析是海底管线疲劳分析和安全评价的重要环节。
Vortex induced vibration of submarine pipeline span is the major factor of resonance invalidation of pipeline.
针对一种用于海底管线检测与维修的新型潜水装置建立了操纵运动数学模型。
A mathematical maneuvering model of a new type of underwater vehicle for pipeline detection and maintenance was presented.
波浪作用下海床中的孔隙水压力与有效应力是影响海底管线稳定性的主要因素。
Wave-induced pore pressure and effective stresses in the saturated porous seabed under wave loading are the main factors that govern the overall stability of submarine pipelines.
当海底管线受到复杂的环境载荷作用时，有必要对其动力响应和可靠性进行分析。
When submarine pipelines are subject to complex condition loads, it is indispensable to analyze their dynamic response and reliability.
地震荷载作用下海床中的孔隙水压力与有效应力是影响海底管线稳定性的主要因素。
Seismic-induced pore water pressure and effective stresses in the saturated porous seabed under seismic loading are the main factors that govern the overall stability of submarine pipelines.
海底管线一旦投入使用就会受到介质腐蚀、应力作用等多种因素的影响，产生缺陷。
After its putting into use, the subsea pipeline suffers the affection from dielectric corrosion, stress variation and etc, so flaws can appear and grow on the walls of pipelines.
利用多传感器的信息融合思想，提出分布式检测与决策融合方法进行长距离海底管线泄漏监测。
Based on the conception of multi-sensors information fusion, a method for distributions detection and decision fusion of sub-sea pipelines leakage monitoring is presented.
沙波沙脊区海底管线悬跨的产生，主要是海底地形、沙波的移动和区域性冲沟的发育所造成的。
The seabed terrain, sand wave migration and the growth of regional erosion ditch create subsea pipeline suspended span.
对布线方法、仪器选择原则及作业关键点进行较详细的说明，对海底管线综合物探作业给与了指导。
The layout of plan surveying lines, principle of instrument selection and the key points of working are described detailedly, which gives a guide to actual work.
本文研究的主要目的是通过物模试验探索一种新型的海底管线防护模式，实现管线冲刷区的快速防护。
The main aim of this thesis is to search for a new type of shield model for subsea pipeline through physical module experiments, and to realize quick protection for pipeline in swash zones.
在设计时海底管线的寿命一般为20年以上，但一些不可预知的损坏往往使他们达不到设计的最佳寿命。
Offshore pipelines are designed to last for more than 20 years, but damage can prevent them from reaching their optimal design life.
自动超声波检测技术具有检测效率高和成本低的特点，满足了海底管线铺设时效性要求和焊缝质量控制要求。
AUT has the characters of high efficiency and low costs of testing, which can meet the requirement of time limitation and quality control of welding seam in constructing submarine pipeline.
多数海底管线修复技术都会涉及到一些借助机械手段或者焊接联接管线的配件，例如联轴器、钳夹、T型分支连接等。
Most subsea pipeline repair technologies involve fittings that can be connected to the pipeline via mechanical means, such as couplings, clamps, T-branch connections, or by welding.
在给定裂纹尺寸与载荷条件下，利用断裂评定程序对一裂纹缺陷进行了评定，得到了海底管线失效评定曲线(FAD图)。
Under given crack dimensions and load condition, to appraise to cracks defects with fracture appraisal program and obtained submarine pipeline failure appraisal diagram (FAD).
由于海底管道海底恶劣的环境条件以及海底管线独特的铺设方法，保温材料的受力条件复杂，本课题对其力学特性进行了深入研究。
As the environment condition is very unfavorable and the installation method of pipeline is unique laying method, the insulated layer load condition is complex.
宝钢开发以热连轧方式生产用于制造直缝埋弧焊管的海底管线用x 65级管线钢板，其产品具有高强度、高韧性和良好的焊接性等综合性能。
The grade X65 pipeline steel used for LSAW submarine line pipe has been developed at Baosteel, which is produced by hot continuum rolling processing.
该工程计划沿波罗的海的海底铺设一条天然气管线，它将绕过东欧麻烦的过境国。
Running along the bed of the Baltic Sea, it would circumvent troublesome transit countries in eastern Europe.
其中一个公司是Flexlife，它制造的设备用来检查和维修把海底油井和海面钻台连接起来的管线的故障。
One such is Flexlife, which makes equipment to detect and repair faults on the pipelines that connect undersea wells to floating platforms.
在海洋使用浮动船作业时，节流和压井管线是从海底防喷器组直接排出的，之后通过外部的导管到达海平面。
In floating offshore operations, the choke and kill lines exit the subsea BOP stack and run along the outside of the riser to the surface.
利用水下振动台研究了海底悬跨管线在地震作用下的动力反应。
Dynamic response for free spanning submarine pipelines due to earthquake was studied by use of an underwater shaking table.
利用水下振动台研究了海底悬跨管线在地震作用下的动力反应。
Dynamic response for free spanning submarine pipelines due to earthquake was studied by use of an underwater shaking table.
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