To recover coal resources that have been damaged by traditional mining methods and ensure stability of the lower roadway in a small pit goaf. the goaf area must be filled and reinforced. In this research. the 1202 working face of the Hanzui mine is considered as an example for classifying the roof of the mining tunnel under the small kiln destruction zone. https://www.pomyslnaszycie.com/tillman-750-stick-welding-gloves-sale/