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采用理论分析、数值计算等综合方法,研究了苇湖梁煤矿+579E2EB1+2急倾斜煤层(64°)高阶段(54m)综放面开采中出现的采空区顶板坍塌与气体超限的问题.现场开采试验表明,采取快速推进、控制均匀放煤、优化通风系统及主动综合防瓦斯等有效措施,遏制动力学灾害并确保安全开采.
This paper studies the roof collapse and gas overrun in the mined-out top-coal caving face in the high stage (54m) fully mechanized top-coal caving face of Weiehuliang Coal Mine + 579E2EB1 + 2 steep coal seam (64 °) by means of theoretical analysis and numerical calculation. Mining tests show that effective measures such as rapid propulsion, uniform control of coal discharge, optimization of ventilation system and active integrated gas prevention are included to prevent dynamic disasters and ensure safe mining.