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开滦煤矿广大革命职工,在学大庆,闹翻番的增产节约运动的新高潮中,为了加快掘进速度,保证煤炭大幅度增产的需要,广大地质测量人员,积极研究利用激光进行导向,代替现有的挂线测量给中腰线的方法。1974年以来,范各庄、唐家庄、马家沟、唐山等矿先后进行了试验,并取得了一定进展.为了使激光导向仪尽早用于生产,在开滦煤矿统一领导下,由唐山矿和开滦煤炭研究所组成三结合试验小组,在唐山矿定点试
In order to speed up the speed of tunneling and ensure a substantial increase in coal production, the vast majority of geologists in Kailuan Coal Mine actively study on using laser to guide instead of the existing Hanging line measurement method to the waist. Since 1974, Fangezhuang, Tangjiazhuang, Majiagou, Tangshan and other mines have conducted experiments and made some progress.In order to make the laser guide for the early production, under the unified leadership of the Kailuan Coal Mine, Tangshan Coal Mine and Kailuan Coal Institute composed of three combined test team, designated test in Tangshan Mine