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文内论述了《煤矿安全规程》规定的用钢板、钢管作局部接地极的现场可行性。通过现场实践和理论计算得出结论:①钢管在矿井中作为局部接地极使用困难;②局部接 地板的接地电阻应不超过35Ω;③钢板接地极的规定尺寸0.6m~2可用0.2m~2代替;④钢板接地极的结构形状宜采用正方形,其接地效果优于非正方形。
This paper discusses the field feasibility of using steel plate and steel pipe as local grounding pole stipulated in “Coal Mine Safety Regulations”. Through the field practice and theoretical calculations, the conclusions are drawn as follows: ① The steel pipe is difficult to be used as a local grounding pole in the mine; ② The grounding resistance of the local grounding plate should not exceed 35Ω; ③ The specified size of the grounding plate of the steel plate is 0.6m ~ 2, Instead of; ④ steel plate grounding structure should adopt the shape of the square, the grounding effect is better than non-square.