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西南成品油管线所穿越的西南三省线路的综合设计施工难度极大,线路部分占管道工程总投资的60%~70%以上,做好线路工程设计是控制工程投资、方便施工和保证管道安全的关键。根据初步设计所确定的线路路由,采用1∶5万地图及定位设备,现场实地选出具体的一条线路,每公里定1、2个控制桩,对于穿跨越河流、铁路及公路的两侧,区县级行政区域分界线两侧,复杂地段均加设控制桩。对于初步设计确定的线路无法走通段,结合线路总体走向重新选线。
The comprehensive design and construction of the southwestern provinces and the three lines connecting southwest refined oil pipeline are very difficult. The line part accounts for more than 60% ~ 70% of the total investment in the pipeline project. The design of the line engineering is to control the project investment, facilitate the construction and ensure the pipeline safety The essential. According to the preliminary design of the route determined by the use of 1: 50000 maps and positioning equipment, on-site selection of a concrete field lines, each set of 1 or 2 control pile, across the river, railways and roads on both sides, District administrative divisions on both sides of the boundary line, complex sections are added control pile. For the initial design of the line can not be found through the paragraph, with the general line to re-alignment.