目 录 一、工程概况 ................................................................. 1 1．吉阳大跨越平面布置： .................................................. 1 2．原线路和改造后线路相关情况 ............................................ 1 3．长江航道道水位情况及导线对江面距离..................................... 4 二、施工方案 ................................................................ 10 1．施工条件分析及方案简述 ............................................... 10 2．施工流程 ............................................................. 12 三、架线前准备 .............................................................. 14 1．旧地线从旧锚塔拆除并锚固 ............................................. 14 2．悬挂导线放线滑车 ..................................................... 17 3．牵张两场布置 ......................................................... 23 4．长江封航 ............................................................. 24 6．拖船展放引绳施工 ..................................................... 29 五.旧导线拆除 ............................................................... 33 1．牵引场准备 ........................................................... 33 2．张力场准备 ........................................................... 33 3．旧线拆除 ............................................................. 34 六.导线展放 ................................................................. 35 1．牵引场准备 ........................................................... 35 2．张力场准备 ........................................................... 35 3．导线展放 ............................................................. 36 4．导线临锚 ............................................................. 38 七.紧线 ..................................................................... 42 八.导线附件安装 ............................................................. 49 九.质量、安全注意事项 ......................
