论文部分内容阅读
一、祁家堡采石场于一九七四年采用了平巷竖井装岩作业。在岩层先开一水平巷道,巷道地面铺轨道,在道坑端部轨面上约高两米建一棚架平台,台面扩大成一直径约6.5米的半球形空间,向上开一竖井,利用竖井把岩石流放到作业面平台上,再经过平台上的漏斗装入矿车。这样不但节省了设备,也减轻了笨重的体力劳动,提高了生产效率,但随之而来的,正如毛主席教导的那样“旧的矛盾解决了,新的矛盾又出现了。”竖井口往往有大石块堵塞,平台上也会有大块石料不能装车。必需再次爆破来破碎这些大块石。
First, Qijia Fort Quarry in 1974 adopted a vertical shaft mounted rock operation. In the rock formation, first open a horizontal roadway, roadway pavement, at the end of the track pit surface about two meters high to build a scaffolding platform, the table expanded to a diameter of about 6.5 meters of hemispherical space, up a shaft, the use of shaft The rock flow to the operating surface platform, and then through the funnel on the platform into the tub. This not only saved the equipment, but also lightened the cumbersome manual labor and increased the production efficiency. However, as Chairman Mao taught, “old contradictions have been solved and new contradictions have emerged.” There are large stones blockage, the platform will have a large stone can not be loaded. You have to blast again to break these large rocks.