摘要
///The Shicaohe coal mine is in a fault basin. Because the exploitable coal bed M3 is below the lowest drainage base level, the water can’t be drained off itself. The water in the shaft originates mainly from the top of coal bed, seepage of river water and precipitation. According to the calculation of large well method, seepage of river water and precipitation, the water yield of shaft is 4 472 m3/d or 6 411 m3/d.