南桐煤的导电性质研究

Reserach on the Electrical Conductivity of Nantong Coal

对南桐煤田的青年矿煤样、南桐矿煤样及鱼田堡矿煤样的导电性质进行了实验测定和理论研究。研究表明,在实验电场强度范围(3.3×10~3～1.7×10~5v/m)内,煤的电阻率是外加电场强度的函数,随着外电场强度的增高,煤的电阻率将下降。实验结果还表明,煤的变质程度越高,其导电性也越好。

The electrical conductivity of coal samples collected from Qingnian, Nantong and Yutianbao coal mines in Nantong colliery were measured in a laboratory, and the result were studied at the same time. It was found that the electrical resistivity of coal was the function of applied electricity field strength (within the range of 3. 3 × 103 ~ 1. 7 × 105 v/m adopted in this paper). With the rise of electricity field strength,the electrical resistivity gets smaller. It was also indicated that the greater the degree the deterioration of coal was,the better the electric conductivity became.