章村矿下组煤开采底板奥灰突水影响因素分析

章村矿在向下延伸开采9#煤的过程中,隔水层厚度薄,奥灰承压水头高,面临来自奥灰含水层突水的危险。在分析井田水文地质条件的基础上,着重分析了构造、隔水层岩性组合与厚度变化、底板采动破坏三个因素对奥灰突水的影响,可知奥灰承压水水压的大小和隔水层的有效厚度及其阻水性能是决定底板能否突水最基本的因素,而断裂构造、含水层富水性和矿压则从不同角度起到了激化和促进作用。

The study of influential factors of Ordovician limestone water inrush under floor in following coal of Zhangcun mine

Zhangcun Mine in the downward extension of the 9 # coal mining process , a thin separation layer thickness , Ordovician limestone confined water and high pressure ,facing the Ordovician limestone aquifer from water inrush risk. In analyzing the basis of hydrogeological conditions ,the analysis focused on the structure , separation layer hthologic characters composition and thicknesses changes ,mining floor destruction of three factors on the Ordovician limestone of the impact of water inrush , we can see the water pressure size of Ordovician limestone confined water and the effective thickness of separation layer and impermeabil- ity is to determine whether the floor of the factors the most basic water inrush ,and faulted structure ,water yield property of water aquifer and mine pressure from different angles and played a catalytic role in sharpening.