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为实现被保护层回采区域安全、快速、高效地掘进与回采,某矿开采7煤层,对12煤层起到卸压保护作用,7煤层保护煤柱的影响形成卸压区及煤柱影响区。通过对不同影响区域内的煤体制定合理的防突措施及防突措施效果检验或验证,采用理论分析和现场考察,结合1201回采区域具体开采工程实践,总结出保护层开采后区域防突措施方法经验。
In order to realize safe, rapid and efficient excavation and recovery in the protected area, a seam 7 is exploited in a mine to relieve pressure on the 12th coal seam. The effect of coal pillar protection in the 7th coal seam forms a pressure relief area and a coal pillar influence area. By reasonably checking out and verifying the effect of coal outbreak in different affected areas and the effect of outburst prevention measures, theoretical analysis and field investigation are carried out. Based on the actual mining practice in 1201 mining area, the measures of preventing outburst after the mining of protective layer are summarized Method experience.