综采工作面缩面期间的顶板管理

Roof Management in Process of Contracting Fully Mechanized Working Face

部分煤矿在布置工作面时,受地质构造等因素影响,会在设计时进行合理优化,随之而来的"刀把"型工作面成为首选。但大采高工作面在由大面缩为小面时,缩面前后的三角点顶板控制成为作业时的关键,控制不好极易对后期小面正式回采造成影响。针对此问题,提出了新的尾采工艺,加强了顶板管理,实现了工作面安全回采,为今后类似条件下综采工作面的开采提供了一定的技术经验。

Hilt-shaped working face is preferred in rational and optimized design of working face layout in some collieries,which easily influences the later small-face stoping due to the intractable roof control at the triangulation point after big face contracting into small face.To solve the problem,the authors propose the new tailings mining technology to strength the roof management and increase the safe stoping,which provides technological experiences for extraction in similar fully mechanized working faces.