This paper focuses on the applications of GPS to the long-distance pipeline project.
本文主要研究GPS技术在长输管线工程中的应用。
Therefore, Beijing should initiate the construction of the second long-distance pipeline immediately.
因此北京必须立即着手引进第二条长输管线。
These characteristics for long-distance pipeline robot to complete specific tasks operation is of great practical value.
这些特点对于管道机器人完成长距离特定任务作业具有重要的实用价值。
On the basis of proposed algorithm, we developed a visual operational guidance system for long-distance pipeline station.
在所提算法的基础上研发了长输管道场站的可视化动态操作指导系统。
When long-distance pipeline is located at the saliferous soil, the differential concentration of salt will speed up corrosion of pipeline.
长输管道在通过盐渍区土壤时，土壤的盐浓度差异会使处于高盐浓度土壤中的管道加速腐蚀。
All of them can be used directly adopted by JOCEC in long-distance pipeline construction projects and also be useful for other construction projects.
可直接应用于油建公司长输管道施工项目中去，对油建公司其他施工项目也有借鉴作用。
It is considered that the results are important base to further study and predicate the air exhausted time for vacuum drying of long-distance pipeline.
研究结果对进一步进行长输管道真空干燥抽气时间的预测研究提供了重要的依据。
Fully welded ball valve is widely used in natural gas, oil, heat, chemical and thermoelectric pipeline network and other long-distance pipeline fields.
全焊接球阀广泛应用于天然气、石油、供热、化工及热电管网等长输管线领域。
Cathodic protection technique has been widely used in long-distance pipeline domestically but reports of studies on parallel pipeline have been rarely seen.
我国长输埋地管道已广泛采用了阴极保护技术，但关于并行管道的理论及技术研究还很少。
Corrosive perforations of underground pipelines in part of long-distance pipeline stations have already made large threat to safety production operation of pipeline.
部分长输管道工艺站场埋地管线的腐蚀穿孔，已对管道的安全生产运行构成较大威胁。
The deterioration of corrosion of long-distance pipeline, the damages and spalling of protecting layer have imposed great threats to the reliable operation of pipeline.
长输管道腐蚀问题日趋严重，防护层存在的破损、剥离等缺陷对管道安全运行构成极大威胁。
Besides the second long-distance pipeline, expansion of Dazhangtuo underground gas storage project and other new underground gas storage projects will be constructed as well.
建设天然气进京第二条长输管线工程、大张坨天然气地下储气库扩建工程及其他的天然气地下储气库工程。
The key in long-distance pipeline construction is welding process, long-distance pipeline construction quality is inextricably linked with quality control of welding process.
在长输管道工程施工中的关键是焊接过程，长输管道工程的施工质量好坏与焊接过程的质量控制是密不可分。
Aimming at the safety of welding of long-distance pipeline, this paper analyzes the hazardous substance of welding process, and puts forward the relevant precautionary measures.
针对长输管道焊接过程出现的安全问题，分析了焊接过程中的有害因素，并就相关有害因素提出了防范措施。
Some valuable points are summed up in the application of GPS controlling network by assessing and analyzing the quality of the practical data in the long-distance pipeline project.
通过对具体观测成果的的质量进行评定分析，总结了长输管线工程GPS静态控制网技术设计应该注意的问题及措施。
The calculation method on evacuation time for drying of long-distance pipeline at the state of water free is analyzed. The calculation equations are given and identified by field test.
分析了长输管道在无水状态下利用真空设备抽空所需时间的计算方法，给出了计算公式，并通过现场试验对其进行了验证。
It is proved by examination that the economical and practical equipment and technics are suitable for the long distance transmission pipeline, and it has good foreground of spreading and appling.
试验证实，这是一种与长输管道自动焊配套的经济实用型成套设备，具有较好的推广应用前景。
It is not only solved the problem of long distance pipeline steel relying on import, realized import substitute, and also successfully applied on pipeline project both home and abroad.
不仅解决了我国长输管线用钢长期依靠进口的问题，产品能替代进口，并在国外管线工程上得到了成功的应用。
This article is useful for the oil pipeline optimal operation and long distance gas pipeline design to some extent.
本文对热油管道的运行优化和天然气长输管道设计也具有一定的借鉴意义。
According to the model, a corresponding software has been programmed which provides a decision-making basic for optimizing transmission of long distance heated crude oil pipeline.
根据所建模型编制了相应软件，为加热原油的长距离优化输送提供了决策依据。
It describes water replacement to clear long-distance LPG pipeline before repairing the pipeline.
叙述在长输液化气管道检修前清理原有的液化石油气所采用的水置换法。
For the total length of long distance pipeline, there is no definite stipulation in the design's stage in design standards.
在管道设计的各个阶段，长输管道的总长度在设计规范中没有明确的规定。
A new welding technique on down-welding has been widely used in welding of long distance pipeline.
下向焊这种焊接新工艺在国内已广泛用于长输管道的焊接。
Numerical method for computer solution are used for fluid flow in long distance pipeline, such as characteristics method, implicit difference method and so on.
液体在长输管道内不稳定流动问题可以采用各种数直解法并借助计算机来进行处理，如特征线法、隐式差分法等。
Internal stress of welds seam for long distance pipeline is analyzed starting with any point of circumferential stress on pipe wall.
从钢管壁上任意一点的环向应力入手，分析了长输管道焊缝的内应力。
This welding process, with continuous welding wire feeding, fast deposit speed and quality welding pass, is especially suitable for long distance pipeline with large diameter and thick wall.
全位置自动焊接技术的特点是，焊丝可以连续送进，焊丝熔敷速度快，焊接质量较高，尤其适用于大口径、厚壁管的焊接。
To cope with this problem, the water needed is supplied from outside sources via long distance pipeline.
为了解决水源问题，需从较远的地区长距离输水到用水区。
As a long distance pipeline crosses rivers or water network and swamp areas where water tables are higher, buoyancy control measures must be taken.
长输管道穿越河流或水网沼泽等地下水位较高地段，必须采取浮力控制措施。
As a long distance pipeline crosses rivers or water network and swamp areas where water tables are higher, buoyancy control measures must be taken.
长输管道穿越河流或水网沼泽等地下水位较高地段，必须采取浮力控制措施。
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