|
Abstract Gob-side Entry Retailing technology is important for reasonable exploitation of coal resources, improving the coal recovery rate, improving the state of roadway maintenance, and reducing the drivage measuring tool. The technology is also beneficial to mine safety production and improvement of mine economic benefit. Yunjialing Coal Mine of Handan Mining Group adopted high-water material gob-side entry retailing technology in transport roadway of 12303working face for recycling.Through observation, the average displacement of two sides of gob-side entry retailing is the less than 35 mm, the average displacement of roof and floor is less than 400 mm, the roadway drivage amount decreases by 35%, the coal recovery rate increases by 10%. The technology has good application effect.
|