沙坪矿8#煤顶板裂缝分布规律及控制技术
Distribution Laws and Control Technology of 8# Coal Roof Cracks in Shaping Mine
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摘要: 煤层顶板特征对巷道支护方案设计、回采工作面顶板管理有重要影响。通过数理统计分析、地质分析、钻孔窥视等方法,确定了沙坪矿8#煤层顶板裂缝赋存特征及其分布规律,提出了8#煤层在掘进和回采期间对顶板裂缝区的控制技术措施,数值模拟和实践表明控制技术措施有效合理。Abstract: Roof characteristics of coal seam have a major impact on roadway design, working face roof management. The roof crack occurrence characteristics and distribution laws of 8# coal in Shaping Mine was determined by mathematical statistical analysis, geological analysis and drilling peep other methods. The 8# coal seam roof crack zone control technical measures were proposed during the excavation and recovery.