为了获得陈四楼煤田合理开采的临界深度,采用回采巷道的矿压现场观测以及深部开采数值模拟两种实验方法,由现场观测得到的矿压数据分析得出了600 m为深部开采临界深度,并与数值模拟分析所得结果相吻合。研究结果表明,当开采深度达到600 m以上时,陈四楼煤矿就进入到深部开采阶段。 In order to obtain the critical depth of rational mining in the fourth coal floor of Chen’s House, the authors adopt the two methods of on-site observation of underground pressure in mining gateway and numerical simulation of deep mining. Based on the data of on-site observation, the critical depth of deep mining is 600 m, The results are in good agreement with the numerical simulation results. The results show that when the mining depth reaches more than 600 m, the Chensilou Coal Mine enters into the deep mining stage.