糯东煤矿松软围岩巷道变形破坏研究

针对深部围岩巷道变形破坏的问题，以糯东煤矿北翼轨道巷道围岩为工程背景，采用钻孔窥视成像技术及现场监测相结合研究研究巷道围岩变形破坏特征。研究结果表明:北翼轨道巷道围岩变形量随时间的增加而增加；通过钻孔成像技术可知，北翼轨道帮部围岩在0~3.0 m处为围岩第一破裂化区域（破碎区），但破碎程度依次减小；4.0 m处为岩层稳定区，局部仍出现离层或破裂现象，但围岩整体稳定；北翼轨道顶板围岩在0~5.0 m处为围岩第一破裂化区域，6.0 m为岩层稳定区。研究可为深部围岩巷道变形控制提供理论依据。

Research on deformation and failure of soft surrounding rock roadway in Nuodong Coal Mine

Aiming at the problem of deformation and failure of deep surrounding rock roadways，this paper took the surrounding rock of the north wing track roadway of Nuodong Coal Mine as the engineering background，and used borehole peep imaging technology and on-site monitoring to study the deformation and failure characteristics of roadway surrounding rock.The research results showed that the deformation of the surrounding rock of the north wing track roadway increases with time；through drilling imaging technology，it can be seen that the surrounding rock of the north wing track rim is the first cracking area of the rock at 0~3.0 m（the broken area），but the degree of fragmentation decreases in sequence；at 4.0 m，it is a rock formation stabilization area，and local separation or rupture still occurs，but the surrounding rock is generally stable；the surrounding rock of the north wing track roof is the first rupture of the surrounding rock at 0~5.0 m，6.0 m is a stable zone of rock formation，which provides a theoretical basis for the deformation control of deep surrounding rock roadway.