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喷射混凝土—锚杆支护是地下工程支护的先进技术。十年来,我国冶金矿山建设和生产系统已有50多个单位推广使用,井巷工程量达70余公里。为了总结交流这方面的
Shotcrete - bolt support is the advanced technology of underground engineering support. Over the past decade, more than 50 units have been promoted for use in the construction and production of metallurgical mines in our country. In order to summarize this aspect of exchange