现今煤矿开采深度逾千米已不鲜见,随开采深度的加大,采掘的深度问题,如高矿压、高水压及高地温等问题逐渐显现出来,这也自然涉及到深部、超深部带压开采的安全性问题。阐述煤层带压开采安全性的深度影响,说明煤层隔水底板保护性能存在深度效应——阻水抗压强度有随深度加大而增强的趋势,同时对底板矿压破坏损伤程度的深度效应不明显的原因进行分析。 Nowadays, it is not uncommon to find that coal mining depth is over one thousand meters. With the increase of mining depth, the problems of deep mining, such as high rock pressure, high water pressure and high ground temperature gradually emerge, which naturally involve deep and ultra deep Safety problems with pressure mining. The deep influence of the safety of coal seam pressure mining is expounded, which shows that there is a deep effect on the protective performance of seam floor. The water-blocking compressive strength tends to increase with depth, and the depth effect on the degree of damage of floor pressure is not Obvious reason for analysis.