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超挖指示装置动作原理及概要1.动作原理使设在掘进机悬臂上的靶标与平行于隧道掘进方向的两束激光光束一致,以此点为基准,通过微型计算机掌握掘进机的姿势及刀头的位置,然后把预先确定的基准和刀头的相对位置关系指示在司机室的指示装置上。操作人员根据画面上刀头和基准隧道的关系,控制钻进和调整超挖(基本概念如
Operation principle and outline of overbreak indicating device 1. Operation principle The target set on the boom of tunnel boring machine is matched with the two laser beams parallel to the tunneling direction. Based on this point, the position of the boring machine and the knife Head position, and then the predetermined reference and the relative position of the tip is indicated on the driver’s room indicator device. Operators based on the picture on the head and the reference tunnel control drilling and adjusting over-excavation (basic concepts such as