Abstract:

Based on the results of thermal conductivity of 127 tested rock samples of coal strata in Huainan-Huaibei Coalfield, this
paper corrected the results of tested rock thermal conductivity and restored the rock thermal conductivity at the initial pressure and
temperature conditions. The corrected values are slightly greater than the measured values. Combining the previously measured data in the region， this paper reports the parameters and the characteristics of rock thermal conductivity in Huainan-Huaibei Coalfield comprehensively, and examines the influencing factors of thermal conductivity from different aspects. The results show that the rock thermal conductivity of coal strata in Huainan-Huaibei Coalfield ranges from 0.37 W/mK to 4.36 W/mK with an average of 2.54 W/mK. The correlation between the thermal conductivity and lithology， buried depth， stratigraphic age and density is significant. The thermal conductivity of sandstone is generally greater than those of mudstone and coal. There is a positive correlation between thermal conductivity and depth as well as density.

Key words: thermal conductivity；correct；influencing factors；Huainan-Huaibei coalfield