浅埋深特厚煤层综放工作面强矿压显现机制与防治技术研究

Study on Strong Pressure Behavior Mechanism and Prevention Technology of Fully Mechanized Top Coal Caving Face in Shallow Deep and Extra Thick Coal Seam

为研究强矿压显现机理,以龙王沟煤矿61617工作面为地质背景,通过理论分析和数值模拟,对工作面覆岩空间结构及应力分布规律进行研究,理论计算了“载荷三带”高度和应力分布,并与数值模拟软件相互验证。结果表明,厚层坚硬顶板的破断是强矿压显现发生的根源,同时提出了具体的防治措施。

In order to study the mechanism of strong mine pressure behavior, taking the 61617 working face of Longwanggou Coal Mine as the geological background, the spatial structure and stress distribution law of the working face overlying rock are studied through theoretical analysis and numerical simulation. The height and stress distribution of the "load three zones" are calculated theoretically and verified with the numerical simulation software.The results show that the breaking of thick hard roof is the root cause of strong mine pressure, and the specific prevention measures are put forward.