广东电力Issue(12)：118-122,5.DOI:10.3969/j.issn.1007-290X.2014.12.024
隧道内电缆蛇形敷设特性
Snaking of Cable in Tunnel
徐伟 1郑志源1
作者信息
- 1. 中国能源建设集团广东省电力设计研究院，广东 广州510663
- 折叠
摘要
Abstract
For restricting axial force and metal sheath strain when the cable happened heat expansion,snaking of cable in tunnel was studied by taking 220 kV crosslinking cable with sectional area of 2 500 mm2 as an example. On the basis of analy-zing affect on axial force and metal sheath strain by initial serpentine arc radiation and serpentine pitch,value range of ser-pentine pitch was affirmed and factors including axial force,construction errors and metal sheath life were considered to de-termine initial serpentine arc width. In aspects of tunnel space and loads of supports and columns,vertical snaking of cable and horizontal snaking of cable was compared. It was pointed out that patterns and parameters of snaking of cable should be reasonably selected in combination with engineering characteristics.关键词
电缆/隧道/垂直蛇形敷设/水平蛇形敷设/初始蛇形弧幅/蛇形节距/金属护套应变Key words
cable/tunnel/vertical snaking of cable/horizontal snaking of cable/initial serpentine arc width/serpentine pitch/metal sheath strain分类
信息技术与安全科学引用本文复制引用
徐伟,郑志源..隧道内电缆蛇形敷设特性[J].广东电力,2014,(12):118-122,5.
