以某矿首采工作面的工程地质条件为基础,采用现场实测的方法,分析了采区顶板矿压变化情况;结合采场实际情况,建立煤层顶板的工程地质模型,应用数值模拟软件UDEC模拟了采动过程中煤层顶板的矿压显现规律;通过对两者结果进行综合对比分析,得出了采动顶板的来压步距。研究结果为该矿煤层的后续开采、支护提供了参考依据。 Based on the engineering geological conditions of the first coal mining face of a mine, the ground pressure variation of the roof in the mining area was analyzed by field measurement method. According to the actual situation of the stope, the engineering geological model of the coal seam roof was established. The numerical simulation software UDEC simulation During the process of mining, the law of occurrence of underground pressure in coal seam roof appears. By comprehensively comparing the results of the two measures, the pressure step of mining roof is obtained. The results provide a reference for the subsequent mining and supporting of the seam.