潞安矿区司马煤矿15号煤层带压开采分区划分

Partition of Pressured Mining in No.15 Coal Seam in Sima Mine of Lu’an Mining Area

通过收集潞安矿区司马煤矿及周边矿井以往水文、地质资料,对司马煤矿15号煤层进行了带压开采分区划分,重新确定了井田内的奥灰水水位标高为635 m^638 m,并绘制了司马煤矿奥灰水等水位线图;计算了15号煤层突水系数为0.010 MPa/m^0.181 MPa/m,根据突水系数和底板完整性将司马煤矿全井田划分为非突水危险区、突水威胁区和突水危险区,并绘制了司马煤矿15号煤层带压开采分区图.针对突水威胁区、突水危险区分别提出了防治措施,为司马煤矿未来开采15号煤层提供了技术保障.

The No.15 coal seam was divided into different pressured mining sections based on the past geological and hydrogeological data in Sima Mine and its surrounding mines in Lu’an mining area.The Ordovician limestone water level in the mine was determined to range from 635 to 638 m and its contour map was drawn.The water inrush coefficient of No.15 coal seam was calculated to be from 0.010 to 0.181 MPa/m.According to the water inrush coefficient and floor integrity,the entire Sima Mine was divided into non-water-inrush-danger area,water-inrush-threatening area,and water-inrush-danger area.The partition diagram of the pressured mining was drawn.Preventive measures were also proposed for the water-inrush-threatening and water-inrush-danger area respectively,which could guide the future mining in No.15 coal seam.