美国矿务局正对一种激光准直系统进行估价。该系统可使连续采矿机在煤层的掘进时保持正确的位置并处于矿脉上,目的在于保持矿山安全。连续采矿机使用一只装有破碎煤层面的切割刀的沉重的旋转鼓轮。松散的煤块被送到机器后的传送带上,然后装上煤车运往地 The U.S. Bureau of Mines is evaluating a laser alignment system. The system allows the continuous miner to maintain the correct position and veins on the coal seam during excavation in order to maintain mine safety. The continuous miner uses a heavy rotating drum with a cutting knife with a broken coal seam. Loose coal was sent to the conveyor belt after the machine, and then loaded on a coal truck shipped to the ground