【摘要】 针对冀中能源峰峰集团九龙矿15449S工作面目前面临顶板来压强度大、推进速度慢等制约矿井安全高效的生产状况,运用理论分析和现场实测相结合的方法,分析了切顶预裂卸压技术的基本原理。根据现场实际情况,提出了采用切顶预裂卸压爆破技术,超前预处理顶板,减小顶板来压时强度。更多还原

【Abstract】 In view of the high pressure and slow speed of the 15449S working face of Jiulong Mine of Jizhong Energy Fengfeng Group restricting the safe and efficient mining, and the combination of theoretical analysis and field measurement was used. The basic principle of pre-cracking and pressure relief technology combined with the actual situation of the site,the use of cutting-edge pre-cracking pressure relief blasting technology was proposed to pre-treat the top plate to reduce the strength of the roof.更多还原