摘要
为了查清煤矿的水文地质条件,预测煤炭开采过程中的涌水量,确保煤矿安全生产,在贵州省安龙县青龙台板燕煤矿矿区内已有井田成果资料的基础上,采用地质填图、钻探工程施工揭露为主,同时配合水工环地质调查、各类样品采集及测试、资料综合整理与分析等方法,对该矿区地层岩性、水文地质特征等进行了详细分析,重点对矿井底板突水地带进行了预测,并采用水文地质比拟法和大井法对先期开采地段进行了顶板涌水量预测。结果表明,①矿区是以龙潭组(P_(3)l)含水层直接充水为主,水文地质条件中等的裂隙充水矿床;②K3煤层+740 m标高以下及断层破碎带附近底板突水危险性大;③采用大井法所预测的矿井顶板正常涌水量15618.86 m^(3)/d,可作为预测结果,为后续矿山开采规划提供依据。针对矿井涌水量大的问题,建议在开采前井下实施专门的抽排水措施,并对抽排水进行资源化综合利用。
In order to find out the hydrogeological conditions of the coal mine,predict the water inflow in the process of coal mining,and ensure the safe production of the coal mine,based on the existing data of the mine field in the Qinglongtai coal mine area of Anlong County,Guizhou Province,the geological mapping and drilling engineering construction are mainly used.At the same time,with the methods of hydraulic environment geological survey,various sample collection and testing,data comprehensive collation and analysis,the formation lithology and hydrogeological characteristics of the mining area are analyzed in detail.The paper predicts the mine inflow volume in the earlier mining area by using the analogy method and the big well method,and predicts floor water inrush of the mine.The results show that:①the mine area is a fissure water-filled deposit of P_(3)l aquifer and moderate hydrogeological conditions.②the risk of floor water inrush is high below+740 elevation of K3 coal seam and near fault fracture zone.③the normal water inflow of the mine roof predicted by the large well method is 15618.86 m^(3)/d;it can be used as a prediction result to provide a basis for subsequent mining planning.In view of the problem of large water inflow in the mine,it is suggested that special pumping and drainage measures should be implemented in the mine before mining,and the pumping and drainage should be purified and comprehensively utilized.
作者
吴志强
杨秀德
Wu Zhiqiang;Yang Xiude(Geological Brigade of Guizhou Geological and Mineral Exploration and Development Bureau,Guiyang,Guizhou 550018)
出处
《资源环境与工程》
2023年第4期430-437,共8页
Resources Environment & Engineering
关键词
煤矿
水文地质特征
涌水量
底板突水
coal mine
hydrogeologic feature
mine inflow
floor water-inrush
作者简介
第一作者:吴志强(1979-),男,高级工程师,硕士,环境工程专业,从事地质灾害防治、生态环境保护、水工环地质等方面的工作。E-mail:wuzhiqiang611@163.com。
