The goal of lower cost and lower line lost and safety and reliability can be achieved by choosing rural direct-buried cable in rural LV line.
农网低压线路选择农用直埋电缆可以实现造价低、线损小、安全、可靠的目的。
Develops the two dimensional mathematical models for direct-buried pipes and in-duct pipes and solves them using the boundary discretization method.
建立了供热管网直埋、地沟敷设管道的二维数学模型，通过边界离散方法进行了求解。
In the paper, a technological economic analysis is made as well to compare the twisting thermal insulated direct-buried pipes with underground tunnel laying ones.
文中还对热缠绕直埋保温管与地沟敷设保温管做了技术经济分析。
Based on the fact, regarding the pipe of direct-buried pipe as cylindrical shell, the article establishes curvilinear coordinates, and analyzes the loading on the pipe.
根据工程实际，利用弹性薄壳理论，将直埋管道直管段作为柱壳建立物理模型，并在相应曲线坐标下，对作用于管道上的荷载进行受力分析。
Based on the analysis of direct-buried pipe the advantages of general design are proposed. At last some corresponding management measures are put forwards to ensure the completion of construction.
通过对直埋管线的分析，得出了综合设计的优点，提出应加强管理，保证施工顺利进行。
The result of cathodic protection has direct relationship with buried pipelines life span and operation safety.
阴极保护效果直接关系到埋地管道的寿命和运行安全。
When lightning strikes a direct buried communication cable, the over voltage produced on the cable is inevitable.
雷击直埋通信电缆产生的过电压危害非常严重。
When lightning strikes a direct- buried cable, the over-voltage produced on the cable is inevitable.
当雷击直埋通信电缆时，必然在电缆上产生过电压。
When lightning strikes a direct- buried cable, the over-voltage produced on the cable is inevitable.
当雷击直埋通信电缆时，必然在电缆上产生过电压。
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