Heat and Moisture Source Distribution Determination and Analysis of Long Distance Excavation

In this paper, taking a long distance mine excavation roadway with high temperature phenomenon in Zhaolou Coal Mine as the main study object, the long distance roadway was divided into 5 parts and the heat and moisture sources distribution were determined and analyzed by field testing. The results show that the main heat and moisture sources in this long distance roadway of Zhaolou Coal Mine are rock, hot gushing water and electrical equipment. The whole tunnelling roadway near working face region(50 m) is the most active area for heat and moisture exchange. The heat dissipation of surrounding rock, electromechanical equipment and hot water in the roadway caused the heat absorption and moisture absorption of the return air and the change of the thermal parameters. In the practical engineering application, the cooling load of the mechanical cooling of the heading face should consider the change of heat loss and thermal parameters (enthalpy change) of the main heat sources. The hot and humidity exchange process in the area near the working face is mainly contained or weakened, and the heat damage degree of the whole roadway can be reduced from the driving head.