摘要
潞宁煤业22109回风巷沿22107采空区掘进,受到不稳定采空区动压影响,巷道维护难度较大。依据理论计算、结合工程实践,确定22109回风巷护巷煤柱尺寸6m,针对巷道维护难点,分析了巷道控制对策、设计了控制方案。井下试验表明,工作面回采过程中,巷道变形量控制在合理范围内,保证了工作面正常安全回采。
No.22109 roadway driving along No.22107 goaf in Luning mine is influenced by the unstable dynamic pressure from goal, so that the roadway maintenance is difficult. Based on theoretical calculation and construction practice, the pillar size in the No.22109 roadway is determined to be 6m. Aiming at the maintaining difficulties, the study analyzes the control countermeasures and designs the control plan. The underground field test shows that the deformation is under control which guarantees the safety mining.
出处
《山西煤炭》
2014年第3期23-25,共3页
Shanxi Coal
