回采工作面支柱迎山角的技术分析

Technical Analysis on Angle of Attack of Pillar in Coal Mining Face

本文对采煤工作面支柱迎山角从力学分析入手,研究顶板在直接顶和老顶之间不同的状态下,同时结合煤层赋存角度,考虑煤层顶底板移动因素,来确定支柱迎山角大小。讨论了支柱迎山角走向近水平、缓倾斜长壁工作面、伪倾斜工作面等各种条件下的确定及选择方法。

In this paper from the mechanical analysis proceed with angle of attack of pillar in coal mining face,study the roof under the different states between immediate roof and main roof,and combines with the occurrence angle of coal seam,considers the moving factors of roof and floor of coal seam,selects the size of angle of attack of pillar.Discusses the determination and the selection method of angle of attack of pillar under various conditions such as trend nearly horizontal,gently inclined longwall mining face,pseudo tilted mining face and so on.