顾桥煤矿1414(1)工作面地表额外水平移动现象及规律分析

Analysis on phenomenon and regularity of additional horizontalmovement in working face 1414 (1) Guqiao coal mine

研究基于淮南顾桥煤矿1414(1)工作面地表水平移动实测数据,结合FLAC3D数值模拟软件,通过模拟开采过程,分析了阶段开采过程对地表水平移动的影响。研究表明,工作面地表点沿倾向方向的水平移动与倾斜变形成正比,但走向方向的水平移动与倾斜变形明显不成比例,特别是在采动区中部地表存在额外水平移动现象;走向方向水平移动由倾斜变形影响量和额外水平移动影响量叠加得到;额外水平移动由走向方向阶段性的开采过程产生,总是沿工作面推进方向,整体呈现近似梯形分布状态。研究结论对沉陷区地表水平移动规律研究与预测具有一定意义。

Based on the measured data of surface horizontal movement in working face 1414(1)of Guqiao coal mine in Huainan,this study combined FLAC3D numerical simulation software to analyze the impact of stage mining on surface horizontal movement through simulated mining processes.The study reveals that the horizontal movement of surface points along the strike direction is directly proportional to the inclined deformation,but the horizontal movement along the dip direction is noticeably disproportionate to the inclined deformation,especially in the middle area of the mined zone where additional horizontal movement occurs.The horizontal movement along the dip direction is obtained by combining the inclined deformation and the additional horizontal movement.The additional horizontal movement is generated by the stage-wise mining process along the strike direction,always occurring in the direction of working face advancement,and exhibiting an overall approximate trapezoidal distribution pattern.The research findings have significant implications for studying and predicting the horizontal movement patterns of subsidence areas.