摘要
针对高应力软岩巷道修复问题,采用锚注-爆破对巷道进行卸压,通过注浆加固和合理选择爆破参数,将应力控制理论与新奥法支护有机结合,充分利用围岩自承能力支护围岩。爆破卸压改变了围岩应力自然调节过程,改善了围岩应力分布状态,支护结构上应力减小,采用较少的支护即可维护高应力软岩巷道的稳定。
Aiming at the problem of repairing the high-stress softrock laneway,the way of bolting and blasting are adopted to relieve the laneway press.By grouting and choicing the reasonable blasting parameter,the control theory of stress and supporting idea of NATM are combined logically,and the surrounding rock self-supporting capacity is the best supporting.Relieving pressure by blasting changes the natural adjustment process of surrounding rock stress,and improves distribution of surrounding rock stress.The stress acting on supporting structure are reduced,lesser supporting can keep softrock stabilization of laneway.
出处
《煤炭技术》
CAS
2008年第7期121-123,共3页
Coal Technology
关键词
锚注-爆破卸压
修复
巷道
relieveing pressure by blasting and blasting
repairing
laneway
