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汾西矿务局柳湾煤矿自1985年来,在软岩巷道共使用了3530根楔管式锚杆,至今几乎仍全部完好有效。
Fenxi Mining Bureau Liuwan Coal Mine Since 1985, a total of 3530 wedge pipe anchor bolts have been used in soft rock tunnels, and almost all of them are still intact and effective.