Research on optimization of layout method of cooling system on coal face

Abstract

In view of problems of serious thermal damage, local high temperature and uneven temperature distribution of long-distance coal face, on the basis of analysis of heat source on the coal face of a coal mine, a layout method of cooling quantity shunting was proposed. That is, under the condition of constant cooling quantity, the air cooler is installed in intake airflow roadway, and one ventilator is matched at the same time. The ventilator is connected with the air cooler through air duct, and part of the cooling quantity is directly transferred to the coal face by the air duct to play the role of cooling. CFD software is used to establish three-dimensional models, and the two layout methods of conventional cooling layout and cooling quantity shunting are numerically simulated respectively. The simulation results show that the distribution of the temperature field is more uniform, and the low temperature area is wider after using the layout method of cooling capacity shunting, which can effectively improve the cooling effect of coal face.

Keywords

• coal face
• thermal damage of mine
• cooling quantity shunting
• ventilator
• air cooler
• cooling