摘要
某750kV架空输电线路工程途经大厚度黄土地区,根据区域资料,该地区黄土为自重湿陷性黄土。黄土湿陷易造成输电线路铁塔倾斜,甚至倒塔,严重危及线路的运行安全。因此,黄土地区塔腿基础的防湿陷措施至关重要。为了解该线路沿线黄土的湿陷性,勘察期间对沿线的黄土湿陷性问题进行了较为系统的研究,依据地基湿陷等级对沿线进行了分区,分别提供湿陷下限和湿陷起始压力,同时针对线路铁塔的特点,对铁塔基础防止或减少湿陷的措施进行论述,为设计人员提供便利。
A 750kV overhead transmission line project through a large thickness loess region, according to regional data, the region loess collapsible loess, loess collapsibility easily lead line tower tilted, or even inverted tower, seriously endanger the safe operation of the transmission line. Therefore, based on tower legs trap moisture measures essential. In order to understand along loess collapsibility during the investigation of the loess along Collapsible issues were studied systematically, based on ground level along the line of collapsible partitioned, respectively Collapsible lower and initial collapse pressure, while line tower against the characteristics of measures to prevent or reduce Tower foundation of collapsible discussed to facilitate the design staff.
出处
《电力勘测设计》
2017年第3期1-5,共5页
Electric Power Survey & Design
关键词
架空输电线路
黄土湿陷性
防湿陷措施.
overhead transmission lines
the collapsibility of loess
wet fall prevention measures.
