综放沿空异形煤柱锚网支护留巷巷道加固技术的研究与应用
종방연공이형매주묘망지호류항항도가고기술적연구여응용
Research an Application on Reinforcing Technique of Using Anchor Mesh to Support Retained Roadway with Irregular Coal Piliar in Mechanized Caving Face
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