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本文阐述了在煤炮、矿震较大情况下的煤巷掘进中应用激光指向仪标定中腰线的方法和日常管理中的注意事项，还说明了应用激光指向仪的效益和重要性。
This paper describes the method of using the laser pointer to calibrate the midline and the precautions in daily management of the coal roadway in coal tunneling with large coal seams and mine shocks. It also shows the benefit and importance of using the laser pointing instrument.