Abstract:Facts have proved that it is of important significance to study repair and reinforcement technology for damaged soft-rock roadway in deep mine. With field survey and borehole TV detection of large soft-rock roadway in south wing of Yangcheng Coal Mine, failure characteristics of surrounding rocks in the roadway were discussed. Based on the principle of bolt-grouting support, the repair and reinforcement plan of full-face high-strength pre-stressed bolt support to reinforce surrounding rocks actively + full fac… Show more
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