黑龙江双阳煤矿西五采区主采煤层顶板突水危险性评价

Coal No.4 Roof Water Bursting Hazard Assessment in Winning District W5,Shuangyang Coalmine,Heilongjiang

双阳煤矿的矿井水文地质类型为极复杂型,矿井涌水量较大,西五采区作为新的开采区域,顶板水文地质条件不清,现需对主采煤层4煤顶板进行突水危险性评价。采用“三图-双预测法”,对西五采区4煤顶板水涌(突)水危险性进行了评价,划分出四个区,分别为较危险区、相对威胁区、相对安全区、安全区,根据划分提出了防治水工作重点及防治措施。采用Visual Modflow预测西五采区的矿井正常涌水量708m^(3)/h、最大涌水量757.56m^(3)/h,为该矿西五采区的防治水工作提供了水文地质基础数据。

Mine hydrogeological type of the Shuangyang coalmine belongs to extremely complex type.The mine water inflow is rather large at present.As a new winning district in the coalmine,the roof hydrogeological condition of winning district W5 is not clear,thus should carry out water bursting hazard assessment for main mineable coal No.4.The assessment has used the“three maps-double predictions”method carried out winning district W5 coal No.4 roof water inrush(bursting)hazard assessment.Four regions have been partitioned,namely rather dangerous region,relatively threatened region,relatively safe region and safe region respectively.Based on regions partition has proposed water control work key emphases.Through Visual Modflow has predicted mine normal water flow 708 m^(3)/h,maximum water flow 757.56 m^(3)/h in winning district W5,and provided basic hydrogeological data for water control works in winning district W5.