Heshan Coal Mine, Shanxi Fenxi Mining Group Zhengxin Coking Coal Co., Ltd.
School of Mining Engineering, China University of Mining and Technology

为探究上位煤层采动影响对下位煤层垮落带及导水裂隙带发育规律的影响，在理论分析的基础上，运用UDEC数值模拟软件，模拟了不同层间距上位煤层底板断裂带深度与下位煤层覆岩“两带”高度变化规律，并以实际工作面为背景，采用双端堵水器对覆岩“两带”高度进行实测。结果表明：9+10号煤垮落带高度为10.6 m，导水裂隙带高度为45.79 m，上位煤层开采对下位煤层导水裂隙带的发育高度存在一定影响，且基本呈负相关趋势，上下两煤层导水裂隙带存在贯通的可能性。

In order to explore the distribution rules of caving zone and water conducted zone of lower layer coal under the influence of mining on upper layer coal, based on theoretical analysis, distribution rules of floor fracture zone of upper coal layer and caving zone and fracture zone of overlying rock of lower coal layer with various of layer spacing have been simulated. Taking actual working face as background, the height of caving zone and fracture zone of overlying rock have been measured by using double-ended water stopper. The results show that the height of the caving zone of No.9+10 coal is 10.6 m, and the height of the fracture zone is 45.79 m. The mining of the upper coal seam has a certain influence on the development height of the fracture zone of the lower coal seam, and there is a negative correlation trend. The fracture zone of the upper and lower coal seams may be connected.

国家自然科学基金资助项目（U21A20107）

郝钢，于鼎豪，徐营，等. 和善煤矿“两带”高度数值模拟及实测研究[J]. 煤矿安全，2023，54（9）：174−179

HAO Gang, YU Dinghao, XU Ying, et al. Numerical simulation and field test of height of caving zone and fracture zone in Heshan Coal Mine[J]. Safety in Coal Mines, 2023, 54（9）: 174−179