高原多年冻土地区降低接地电阻的试验研究  

Experimental Investigation on Reducing Gounding-Resistance in Perennial Frozen Sediment Areas

作　　者：吴广宁[1] 张军[1] 付龙海[1] 王颢[2] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031 [2]铁道第一勘察设计院,甘肃兰州730000

出　　处：《西南交通大学学报》2005年第2期138-141,162,共5页Journal of Southwest Jiaotong University

基　　金：铁道部科技开发项目(2001J005 2);铁道部科技研究开发计划课题(2003J008 C)

摘　　要：为解决青藏铁路沿线冻土地区防雷接地工程问题,针对高原冻土地区的土壤特性,选择与青藏铁路沿线冻土类似的多年冻土地区进行降低接地电阻的模拟试验.探讨了在多年冻土地区影响土壤电阻率的因素和使用低电阻接地模块降低接地电阻的工程方法.证明了低电阻接地模块在降低高原冻土接地电阻方面具有比较好的效果,可采用多个接地模块并联达到防雷接地工程的设计要求.To solve the problem of grounding for lighting along the Qinghai-Tibet railway, experiments were conducted in an perennial frozen sediment area, where there were similar environments as the sections of the Qinghai-Tibet railway. The factors affecting the resistivity of frozen soils were discussed, and some solutions to grounding for lightning using grounding modules were introduced. It is verified that the grounding modules have good performance for reducing grounding resistance in perennial frozen sediment areas, and the design requirements can be fulfilled by parallelly connecting necessary number of grounding modules.

关 键 词：防雷接地 高原 冻土 电阻率 接地电阻 接地模块 

分 类 号：U228.23[交通运输工程—道路与铁道工程]