林区、多年冻土区并行敷设管道间距及施工技术探讨

Separation Distance and Construction Technology of Parallel Laid Pipelines in the Forest Regions and Permafrost Regions

为节约用地,方便管理,应尽可能减小拟建管道与已建管道的并行间距。但是,管道并行敷设的距离太近会对相邻管道的安全构成威胁。另外,过近的管道间距对于管道抢修也有影响。因此,合理确定两管道最小安全间距尤为重要。确定管道并行间距时应充分利用在役管道建设形成的管廊带。结合以往工程经验,经过调研、比选及论证认为,林区、多年冻土区并行敷设管道间距10 m较为合理。在施工中,确保管道爆破施工符合相关规范要求,综合应用先进的爆破器材和毫秒延时爆破技术可实现近距离(不小于10 m)在役管道爆破作业。随着项目的进展,应对控制爆破方案进行更加深入的研究,将不同间距下的施工、运行费用纳入技术经济比选范围,经综合分析后最终确定最为合理的并行间距及施工措施。

In consideration of land saving and For the ease of management, the separation distance should be reduced as much as possible between the planned pipeline and existing pipelines. But it would cost a safety threat to the adjacent pipelines iFthe parallel laid pipelines are too close to each other. Once an accident occurs in one pipeline, it would probably damage the other pipelines, or even cost a second accident. Too narrow space between pipelines might affected pipeline repairing. So parallel paid pipelines should be appropriately Far away From each other. ThereFore, it is quite important to determine the minimum safe distance reasonably. Combining with previous engineering experiences, after investigation, comparison and demonstration, 10 m spacing between parallel laid pipelines would be reasonable in the Forest regions and permafrost regions.