预采顶分层滑移支架放顶煤工作面顶煤变形规律

Regularity of Top Coal Deformation When Mining Top Slice in Advance by Sublevel Caving System Equipped with Sliding Support

以现场实测的手段,运用围岩移动的基本规律,对阳泉荫营煤矿近水平15~#煤层8316预采顶分层滑移顶梁支架放顶煤工作面顶煤的移动变形规律进行了分析和研究,阐述了顶煤放落前所经历的三次破坏过程以及支承压力、回采工序、支架支撑对顶煤的破坏作用。

After adopting sliding support in steep thick seam mining system, sliding supportis gradually employed in gently inclined seam mining system or ilatly inclined seam mining system,which attracts more and more attention. Sliding support has been utilized in 3 faces, faces of mining top slice in advance, located in No. 15 coal seam at Yinying Coal Mine, Yangquan Ccal Administration.The paper analyses and studies into regularity of movement and deformation of top coal when mining top slice of No.8316 face leeated in No. 15 flatly inclined coal seam in advance, which is part of sublevel caving system equipped with sliding support, at Yinying Ccal Mine. The paper describes three processes of destruction of top coal before drawing top coal, and destruction effects caused by support pressure and mining process and support supporting process on top coal.