探讨隔水岩柱对奥灰突水的影响

Investigate the Effect of Ordovician Limestone Pillar Impermeable Water

隔水层是指不透水的胶结致密、完整的坚硬岩层。奥陶系峰峰组灰岩含水层顶部到太原组最下一层可采煤层底顶间的岩层岩性一般以泥岩、砂质泥岩和铝质泥岩为主,细砂岩、石灰岩为辅,可作为隔水层,其隔水能力直接与隔水层岩石的厚度、岩性和构造等因素有关,直接影响上覆煤层的安全开采。以山西沁水煤田南部襄垣研究区为例,分析、探讨了隔水岩柱对奥灰突水的影响,这对防治地下水害、井下煤层安全带压开采具有重要的意义。

The impermeable layer is dense impermeable cement, complete hard rock. Fengfeng Group top Ordovician limestone aquifer to the next layer of Taiyuan Formation coal layer between the top end of the rock lithology general mudstone, sandy mudstone and aluminum mudstone, fine sandstone, limestone, supplemented, as impermeable layer impermeable layer impermeable ability to direct and rock thickness, lithology and structure and other factors, directly affects the security overlying the coal seam mining. In the southern Qinshui Coalfield Xiangyuan study area as an example, the analysis discusses the influence of confining pillar of Ordovician water, which is the prevention of harm groundwater; underground coal seam mining belt press has an important significance.