综采工作面停采线破碎煤体注浆加固技术

he coal bed is soft and broken and the coal body is unstable of S1201 mining coal face in Xing Long mine. It improves the stabilization of the coal pillar at stop line and the mechanical properties of roadway surrounding rock, that grouting reinforcement by chemical pulp to coal body. And it provides favorable conditions for security and fast withdrawing mining face. It also provides a practical technology for high production and high efficient mine.