接地降阻剂机理及用量研究

本文介绍我们对降阻剂降低接地电阻的机理所作的试验研究结果。这个问题目前尚有争议,有人认为存在着很大的所谓浸润层,亦有人持怀疑态度。我们的试验表明,在埋设降阻剂时确实存在着降阻剂导电溶液向土壤中渗透的一定区间。经过理论分析计算,确定了渗透层的厚度和渗透层的平均土壤电阻率。渗透层并不大,约几公分到十几公分,它可使降阻率提高约20～30％,并有良好的均压作用。仅少数的试验结果已可看出,降阻率的提高对降咀剂用量的关系具有饱和特性。

A RESEARCH ON MECHANISM AND USED QUANTITY ABOUT AGENT OF DECREASING GROUNDING RESISTANCE

A test of the mechanism of agent of decreasing grounding resistance is introducedin in this paper, This problem is in dispute now a days, someone think there is a large area-the so called "permeation layes" . But others taka a sceptical attitute. The result of our test shows that there do exist an area where the electrical liquid of resistance-reducing agent permeat through when the grounding resistance-reducing agent is embeded in earth. We have determined, through theoretical analysis and calculation. the thickness of permeation lages and its average soil resistivity. The thickness of the permeation layer is not big, generally about 10cm. It could rise the resistance-reducing ratio 20%~30%above and has a fairlg well-distribut effect on voltage, From several measurements it has already been known that relation between improvement of rate of reducing resistance and used quantity of agent of decreasing grounding resistance is provided with sat-urational propcerty.