复杂地形条件下大截面导线张力架线施工方案

Construction Scheme of Tension Wire of Large Section Under Complex Topography

酒湖特高压直流输电线路工程(甘7标)甘陕交界段地处秦岭山脉群山峻岭区域,张力架线除考虑导地线连续上下山带来的上扬、下压、放线滑车包络角度大等影响,主要还存深山无人区域无施工运输道路,牵张场选择困难等问题,架线区段无法采用常规的顺线路牵引方式进行施工。针对上述问题,以N3662-N3678段为例,通过施工计算,优化施工方案,提出重点解决措施,可为山区张力架线施工工程提供参考。

Jiuhu uhvdc transmission line project ( Gan - 7 bid) at the junction of Gansu and Shaanxi is located in the mountainous Qinling mountains, in addition to consider the influence of ground wire continuous up and down the mountain bring up, down pressure, large envelope angle of line pulley when tension stringing, it is also found that there is no construction transportation road in that deep mountain unattended and the problem of difficult stretch field selection, it is not possible to use conventional direct line traction method to construct the wire section.? Focusing on the above problems, based on the N3662 - 3678 period, Through the construction calculation, optimization of the construction scheme, put forward the key solution measures, can provide a reference for the mountain tension wire construction project.