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。 Conducting the experimental determination and theoretical research on the electrical properties of coal samples of Nantong Coal Mine, coal samples of Nantong Mine and coal samples of fishponge mine. The results show that the resistivity of coal is a function of the applied electric field strength in the experimental electric field strength range (3.3 × 10 ~ 3 ~ 1.7 × 10 ~ 5v / m). With the increase of external electric field strength, the resistivity of coal will decrease . The experimental results also show that the higher the degree of deterioration of coal, the better its electrical conductivity.