【摘要】 许疃煤矿3233工作面是矿井33采区的首采工作面,无相关巷道压力及变形的记载。其回采巷道布置于32煤层中,巷道断面大、跨度大,围岩的蠕变、流变效应、巷道淋水等问题对巷道支护提出了挑战。针对此类条件开展研究,采用实体煤巷大断面大间排距综合控制技术,取得了实效。更多还原

【Abstract】 3233 working face is the first working face of Xutuan Colliery,its recovery roadways are laid through 32 coal seam,without any record of roadway stress.The large crossing,big span,creep of surrounding rock,rheomorphic effect and underground water have been large questions of roadway support.According to these conditions,some research work with the comprehensive technology of entity roadway-large cross-space length was carried out,the effective results were obtained.更多还原