五图-双系数法对奥灰水带压区回采面突水危险性评价

Risk assessment of water inrush in mining area of Ordovician limestone water pressure zone by five figure double coefficient method

为防止15~#煤层底板奥灰水突水事故,确保15~#煤层回采面带压开采安全,采用五图-双系数法对15#煤层带压开采进行水害评价,最大程度防范回采工作面奥灰承压水引发水害事故。

In order to prevent the No.15coal seam in Ordovician limestone water inrush accidents,ensure the mining safety of No.15coal mining face,the five figure-Double coefficient method was used to evaluate the water hazard during mining No.15coal seam,which prevent the water disaster caused by Ordovician limestone water zone in the maximum degree.