摘要
探讨了三河尖矿发生的片帮型冲击矿压机制。在压应力集中区内，巷道自由表面附近裂纹生成、扩展和贯通，在巷道壁内部由表及里重复顺壁形成薄煤岩层，在应力增加或外界扰动下薄壁层屈曲破坏，剥落崩出，形成冲击矿压，其主要形式为突然的煤层片帮。此外，结合煤层的倾斜赋存环境。
By analyzing rockburst in Sanhejian Coal Mine, the growth, coalescence and interaction of cracks with free surface are discussed in the compression stress concentration area near opening free surface. Near the free surface, the growth, coalescence and interaction of cracks with free surface make crack propagation and cause the thin rock layer parallel to free surface. This process repeats continuously. Thin rock layers buckle and fracture under outside disturbance, and lead to the occurence of rockburst. Splitting is a dominant manner of destruction.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
1998年第5期508-513,共6页
Chinese Journal of Rock Mechanics and Engineering
