深部开采软岩硐室联合加固技术研究

Joint Strengthening Technology of Soft Rock Chamber in Deep Mining

硐室稳定性对地下煤炭资源安全高效开采非常重要。针对深部高应力开采条件软岩硐室的围岩变形与破坏问题,采用理论分析、现场原位实测与效果验证等方法,阐述了硐室联合布置的原则和特点,监测了深部软岩硐室围岩节理裂隙发育情况,分析了深部软岩硐室围岩变形特征,并提出了深部软岩硐室锚注联合加固支护技术,在现场工程实践中,验证了硐室锚注联合加固的效果,进一步起到指导工程实践的作用。

The chamber stability is very important for the safe and efficient mining of undergound coal resources.Aiming at the deformation and failure of surrounding rock in soft rock chamber under deep high stress mining conditions,the principles and characteristics of joint layout of soft rock chamber are expounded by means of theoretical analysis,in-situ measurement and effect verification,the development of surrounding rock joints and fractures in deep soft rock chamber is monitored,and the deformation characteristics of surrounding rock in deep soft rock chamber are analyzed,and the deep soft rock chamber anchor-injection combined strengthening support technology is put forward.In the field engineering practice,the effect of the chamber anchor-injection combined reinforcement is verified,which further plays a guiding role in engineering practice.