放顶煤开采顶煤控制技术研究

放顶煤开采是在开采过程中沿厚煤层的底部布置采煤工作面进行开采,并利用矿山压力及其他辅助措施将顶煤从工作面后方一起放落的一种采煤方法。该文从放顶煤工作面顶煤的稳定性入手,详细阐述了采矿活动中顶煤受力破坏情况,支架与围岩的关系,进而探讨了控制顶煤的有效措施,对煤矿放顶煤工作的安全性、可操作性具有一定的指导作用。

Study on Top Coal Controlling Technology in Exploring Overhead Coal

Mining overhead coal is to arrange working face along the bottom of thick coal strata during the period of coal exploration.On the basis of stability of overhead coal working face,destroyed condition of top coal in mining,relation between mounting and country rocks are introduced in this paper.Thus,effective countermeasures for controlling top coal are found,which will guide coal exploration safely.