The coal seam mining-induced characteristics of overlying strata fracture and surface subsidence are tested and numerically analyzed using the similar materials. Two mining models were conducted in a laboratory with two different rock orientations and slopes to simulate the stability conditions and driving conditions of the loess land slope of under the guides of the V-shaped law. Given a 30° dip angle of coal seam in the Model 1, the results show that the loess landslide on top of inclined rock layers is in the state of critical instability when working face advances to 100 m. Whereas, given a 30° dip angle of coal seam in the Model 2, the loess landslide on top of anti-inclined rock layers is in the state of critical instability when working face advances to 120 m. Numerical analysis using a discrete element method was performed to compare the analysis results with laboratory findings. Based on the test and numerical analysis results both indicate that the land sliding along loess land slope are most likely be triggered on inclined rock layers than anti-inclined rock layers when an underground mining activity begins to excavate.

使用相似的材料测试并数值分析了煤层开采引起的上覆地层破裂和地表沉陷的特征。在一个具有两种不同岩石方向和坡度的实验室中进行了两种开采模型，以模拟在V形定律的指导下黄土坡度的稳定条件和驱动条件。考虑到模型1中煤层的倾角为30°，结果表明，当工作面前进到100 m时，倾斜岩层顶部的黄土滑坡处于临界失稳状态。鉴于模型2中煤层的倾角为30°，当工作面前进至120 m时，抗倾斜岩层顶部的黄土滑坡处于严重失稳状态。使用离散元素方法进行了数值分析，以将分析结果与实验室结果进行比较。根据试验和数值分析结果，两者均表明，当地下采矿活动开始进行挖掘时，沿黄土坡坡滑动的土地最有可能是在倾斜的岩石层而不是反倾斜的岩石层上触发的。