頂板冒落 、 巷道底鼓和礦柱破壞是采礦過(guò)程中的重要巖石力學(xué)問(wèn)題.Roof falling, floor heave of roadway and pillar failure are important rock mechanical problems in mining.工程實(shí)例表明注漿是一種通過(guò)冒落區(qū)的有效辦法.The engineering cases show that grouting is an effective way ...