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METHOD OF MAKING A MINE WORKING LINING INTEGRATED WITH SURROUNDING RING OF CRACKED ROCK BEING CONSOLIDATED WITH CEMENT INJECTIONS UNDER DEFORMATIVE ROCK PRESSURE CONDITIINS
METHOD OF MAKING A MINE WORKING LINING INTEGRATED WITH SURROUNDING RING OF CRACKED ROCK BEING CONSOLIDATED WITH CEMENT INJECTIONS UNDER DEFORMATIVE ROCK PRESSURE CONDITIINS