A system and method for preventing and controlling a coal goaf fire

摘要

#$%^&*AU2020102243A420201029.pdf#####ABSTRACT The embodiments of the present invention disclose a system and method for preventing and controlling a coal goaf fire, and relate to the technical field of coal mining research. The present invention improves the fire prevention and control effect in the entire goaf area. The system includes a drag pipe inert injection device, used to inject an inert gas into a goaf on an air intake side; a surface borehole inert injection device, used to inject an inert gas into a goaf on a return air side; an air intake side data acquisition device, used to acquire a first temperature and a first index gas concentration in the air intake side goaf; a return air side data acquisition device, used to acquire a second temperature and a second index gas concentration in the return air side goaf; and a data processing device, connected to the above devices respectively, and used to control an inert injection speed of the drag pipe inert injection device according to the first temperature and the first index gas concentration, and to control an inert injection speed of the surface borehole inert injection device according to the second temperature and the second index gas concentration. The invention is mainly used to prevent and control a coal goaf fire.DRAWINGS device 8 Ground -7 Return air roda o7 Ot Wokig O o0QQ%2 eturn air side goaf Working face ir O Side vaf 0 Air intake 0 1 roaway 6 0 0 FIG. 1