Abstract: The 6143 working face is a fully mechanized mining face with large inclination and high mining height in Huashan Coal Mine,which is difficult to mine and has complicated geological conditions.In order to ensure the safe mining of the fully mechanized mining face,before the mining of the working face,survey the surrounding small kiln,prepare the design of water exploration and discharge,and improve the relevant plans and technical measures.Technical management,such as management,eliminates hidden dangers such as water,roof and toxic and harmful gases that may be encountered during the construction process,ensuring that the 6143 highinclined and highmining fully mechanized mining face safely passes the old lane.Through this practice,a lot of valuable experience is summarized to provide a technical basis for the future comprehensive mining working face to pass the old lane.

Key words: Large dip angle, Large mining height, Old lanes, Fully mechanized mining face