厚松散层下开采覆岩及地表移动变形规律试验研究

煤炭开采保障了我国能源供应，同时也因采空造成了地表变形沉降。针对厚松散层下开采覆岩及地表移动变形问题，依托兖州矿区某庄煤矿地质背景，采用模型试验，监测研究了采动过程中地表及各层覆岩移动变形指标的变化规律，探索了采掘结束后的持续变形阶段，指出受采动影响松散层压缩导致的移动变形值在整体移动变形上占比增大；在煤层采厚2.2m条件下，观测获得采后地表的最大下沉值为1447.6mm，最大水平移动值为394.6mm。研究结果对矿区工程建设用地及线路规划选址具有一定的实用意义。

Experimental study on overlying strata and surface movement and deformation law of mining under thick loose layer

Coal mining has guaranteed China ''s energy supply, but also caused surface deformation and subsidence due to mining. Aiming at the problem of overlying strata and surface movement and deformation under thick unconsolidated layers, based on the geological background of a Zhuang coal mine in Yanzhou mining area, the model test was used to monitor and study the variation law of the movement and deformation indexes of the surface and overlying strata in each layer during the mining process. The continuous deformation stage after the end of mining was explored, and it was pointed out that the proportion of the movement and deformation value caused by the compression of the unconsolidated layer affected by mining increased in the overall movement and deformation. Under the condition of 2.2 m mining thickness of coal seam, the maximum subsidence value of post-mining surface is 1447.6 mm and the maximum horizontal movement value is 394.6 mm. The research results have certain practical significance for the construction land and line planning and location of the mining area.