关键词: 切顶卸压, 沿空留巷, 矿压显现规律, 围岩变形

Abstract: In order to alleviate the tension situation of continuous mining of Lutaishan Mine,reduce the amount of roadway tunneling in the adjacent working face sections and the cost of tunneling,and ensure the smooth replacement of 2203 working face,the test of god side entry retaining along the track of 2202 working face is done.According to the surrounding rock geological conditions of the roadway,and based on theoretical analysis and pre-split blasting roof technique,the supporting scheme of gob side entry retaining by roof cutting and pressure relieving is proposed.The mine pressure development regularity in gob side entry retaining by roof cutting and pressure relieving is summarized by continuously observing the surrounding rock deformation data of the roadway during stoping process.The above study results can provide reliable reference for the practice of god side entry retaining of Lutaishan Mine.

Key words: Roof cutting and pressure relieving, Gob side entry retaining, Mine pressure development regularity, Surrounding rock deformation