Device and method for preventing gravel from falling into blast hole

The invention discloses a device and a method for preventing gravel from falling into a blast hole, and belongs to the field of blasting. The blast hole gravel cleaning device comprises a suction cup, a controller, a vacuum generator and a grab bucket; the suction cup and the grab bucket are both arranged in the blast hole; the suction cup communicates with the vacuum generator through a suction pipe; the end of the grab bucket extends to the position between the inner wall of the blast hole and the gravel; a sensor is mounted on the suction cup and used for judging whether the gravel is adsorbed or not; the sensor is electrically connected with the controller; the controller is electrically connected with the grab bucket; the upper end of the grab bucket is connected with a pull rope; and the pull rope extends out of the blast hole. 本发明公开了一种解决碎石块掉入炮孔的装置及方法，属于爆破领域。一种炮孔碎石清理装置，包括：吸盘、控制器、真空发生器与抓斗；所述吸盘与所述抓斗均布置在所述炮孔中，所述吸盘通过吸管与所述真空发生器连通，所述抓斗的端部延伸至所述炮孔内壁与所述碎石之间；所述吸盘上安装有传感器用于判断是否吸附所述碎石；所述传感器与所述控制器电性连接，所述控制器与所述抓斗电性连接；