滑移支架放顶煤工作面煤岩活动特点及其控制

本文结合我国滑移顶粱液压支架放顶煤开采的实践，对滑移支架放顶煤工作面顶煤的玻碎和放出规律进行了研究，指出工作面长度、煤层强度、开采深度及煤层结构等是影响顶煤破碎和放出效果的主要因素，同时指出顶煤的玻碎是顶煤与上覆岩层相互作用的结果，而支架仅起辅助破煤的作用。

Move Characteritics and Control of Coal and Rock at the TOP -- Coal Drawing Face with the Help of Dliding -- bar Type Supports

This paper stuelieel cracking and drawing laws of the top -- coal with the help ofsliding -- bar type supports, according to the wse of the top -- coal drawing in our country,and showed that the main factors of cracking and drawing of top -- coal is face length, coalstrength, extraction depth and coal seam structure, meanwhile pointed out that top coalcracking is a result of inleraction with upper rock, but that supports break the top -- coal isaux iliary. On this base, analyseel that prollems axisted in the use of the top - coal drawingat Nian -- n Coal Mining Guang -- xi and put foreward ivaproving proposals.