The way to lay underground pipelines of excavating streets often be used.
铺设地下管线大都采用开挖路面的方法。
Detection of underground pipelines is of great significance in normal activities.
地下管道的检测，在日常的生产活动中，意义是非常重大的。
Also when digging operations have potential to strike underground pipelines or utilities.
挖掘作业可能损坏地下管道或公用设施。
Many important underground pipelines are made of metal materials in cities and factories.
在城市及工厂的地下管线中，许多重要的管线是用金属材料制成的。
Lava tubes serve as underground pipelines, allowing molten rock to flow under and away from volcanoes.
溶洞像一个底下管道使熔融岩石从火山下端流走。
The electromagnetic method is an available means to detect the trend and depth of old civil underground pipelines.
利用电磁法探查城市老管道的走向和埋深是一种可行的方法。
Electric current gradient process was a new technique for testing the external coatings of the underground pipelines.
电流梯度法是一种地下管道外防护层检测的新技术。
The norms of the ground subsidence for tunnel construction allowed by ground structures, underground pipelines and metro are studied.
研究了地面建筑物、地下管线及地下铁道允许的隧道施工引起的地表沉降基准；
The vulnerability assessment of underground pipelines is significant for risk assessment system of lifeline anti-seismic engineering.
地下管道的易损性评价是生命线地震工程风险评价体系的重要研究内容。
The paper summarizes the effect of AC system on underground pipelines. Some measures on how to avoid its interference are put forward.
综述交流电力线路对埋地管道交流干扰的危害，提出防止危害的几条措施。
The ground settlement caused by the construction of urban tunnel threatens the adjacent buildings or underground pipelines very seriously.
城市隧道施工引起的地表沉降，对邻近建筑物或地下管线的安全造成了很大威胁。
Asphalt, coal tar enamel, fusion-bonded epoxy, polyethylene tape, 2-layer PE and 3-layer PE coatings may be used for corrosion control of underground pipelines.
埋地钢管的外防腐可采用沥青防腐层、煤焦油瓷漆防腐层、聚乙烯胶粘带防腐层、熔结环氧粉末防腐层、二层结构聚乙烯防腐层、三层结构聚烯烃防腐层等技术。
When inspecting the underground pipelines constructions, the section chief of logistics in a college asks the constructor: "What's the duration of the pipelines?"
某高校后勤处长，巡视地下管线建设，他问施工方：管线的寿命是多少年？
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。
Besides, common features of GIS development related with underground pipelines is summed up, and an universal model of urban underground pipelines GIS is put forward.
并归纳总结了在与地下管线相关的GIS系统开发中的一些共同特点，提出了一个城市地下管线地理信息系统的通用技术路线。
The heating system and can be heat to provide heaters to 4 degrees centigrade temperature to 5 0 0 degree the underground pipelines, through the water to supply heating (figure 4).
这个地热传导暖气系统可以提供暖器达到温度摄氏40度到5 0度之间，透过地下管线的热水来供应暖气(图4)。
At present, the common underground pipelines are steel tube, reinforced concrete pipe, and PVC hard plastic tube. The cost of them is much high and it is also difficult to lay out.
目前常用的地埋管有钢管、钢筋混凝土管、PVC硬塑料管，这些管道的成本都较高，且施工难度大。
The undue stratum settlement is likely to cause the bad effect to the around environment such as incline of building, rupture of underground pipelines, destroy of ground and Bridges and roads.
当盾构施工引起的地层沉降过大时，可能导致地表建筑物倾斜、地下管线断裂、地面、桥梁、道路等发生破坏，对周围环境产生不利影响。
The layout, design and installation of pipelines on the ground and underground projects shall strictly enforce the laws, regulations and standards concerning safety in production.
地上、地下工程管线规划布局、设计与敷设要严格执行有关安全生产的法律、法规和标准。
This paper introduce types and mechanism of corrosion of underground metal pipelines and structures and anti-corrosion methods.
本文介绍了地下金属管道和设备的腐蚀类型和机理以及防腐蚀的方法。
The electrical interference in the underground mine area gives rise to serious corrosion of pipelines and the improved ground discharge is satisfactorily effective.
矿区井下电铁干扰使管道受到强烈腐蚀，采用改良型接地排流后收到了满意的效果。
Metro stray current causes serious electrochemical corrosion in the metal pipelines, communication cable epidermis and rebars in concrete main structure buried underground nearby metro.
杂散电流对地铁周围的埋地金属管道、通讯电缆外皮以及地铁主体结构钢筋等发生电化学腐蚀，产生严重的危害。
Metro stray current causes serious electrochemical corrosion in metal pipelines, communication cable epidermis and rebars in concrete main structure buried underground nearby metro.
杂散电流对地铁周围的埋地金属管道、通讯电缆外皮以及地铁主体结构钢筋等发生电化学腐蚀，产生严重的危害。
The paper reviews briefly the imaging of underground objects such as the imaging of subsurface buried pipelines, the detection underground cavities, and the prospection of gold.
本文介绍了地下物体检测和成象的一些应用：例如地下埋设管子的成象、地下洞穴检测、黄金勘探等。
The underground oil and gas pipelines, especially the pipelines under the water, need steady or periodic-unsteady position inspection.
油气管道铺设以后，需要定期或不定期的进行位置检测，特别是水下管道。
The optimal application of sound pole, leak detector and correlator supported by leak detection program have improved the accuracy of leak detection of underground water pipelines.
听音杆、检漏仪和相关仪等设备的优化使用，加之合理的检漏程序，提高了地下输水管道漏点检测准确率。
Liquefied petroleum gas(LPG)pipelines were embedded deeply underground. It was difficult to test, take sample and monitor operation conditions.
液化气管道深埋在地下，存在检测和取样困难，对其运行状况难以掌握。
Liquefied petroleum gas(LPG)pipelines were embedded deeply underground. It was difficult to test, take sample and monitor operation conditions.
液化气管道深埋在地下，存在检测和取样困难，对其运行状况难以掌握。
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