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以地表变形监测成果为基础,结合数值计算分析,再现了程潮铁矿东主井区地表的变形过程,分析得到了井区地表的变形特征和变形机制。研究结果表明,当地下采空区和地表塌坑形成一定规模后,在矿区不同方向水平构造应力的释放和挤压作用下,被地质结构剖分为柱状结构的围岩向塌坑方向产生倾倒,引起了井区地表变形;地表变形主要以水平移动为主,垂直位移很小,但是随着柱状结构岩体不断倾斜,地表垂直位移与水平位移的比值也不断增大,并在地表形成漏斗形变形曲线。
Based on the results of surface deformation monitoring and combining with numerical calculation and analysis, the surface deformation of the main shaft of Chengchao Iron Mine is reproduced. The deformation characteristics and deformation mechanism of the surface in the well are analyzed. The results show that after the underground gob and surface collapse have formed a certain scale, under the release and extrusion of horizontal tectonic stress in different directions in the mining area, the surrounding rock which is divided into columnar structures by geological structure has a tendency to collapse , Causing the surface deformation in the well area. The surface deformation is mainly horizontal and the vertical displacement is small. However, as the columnar rock mass continuously tilts, the ratio of the vertical and horizontal displacements of the ground surface also increases, Deformation curve.