摘要
以康家湾十二中段运输巷道为主要研究对象,分析巷道围岩和支护系统的失稳原因,进行加固设计.采用新奥法分析围岩破坏机理,在稳定性计算中将运输巷道等效为理想圆形巷道,松软破碎岩体视为各向均质岩体.分λ=1和λ≠1两种情况,用弹塑性理论进行计算,获得了设计巷道在开挖无支护情况下的应力应变状态,进行围岩稳定性分析,在此基础上,分析该巷道原支护系统失稳的原因,并进行加固设计.
The design takes the tunnel at level 12 of kang Jiawan Mine as the main research objects and analyzes the stability of the surrounding rock mass and the failure of the supports. In the first place the New Austrian Tunneling Method was introduced. Then, the failure mechanism and modes of surrounding rock mass were analyzed, the tunnel was simplified as an idealized circular tunnel and the soft and fractured surrounding rock mass, as homogeneous media. The analytical method was used to analyze the stress state and the stability of the unsupported rock mass of the east connection tunnel and the inclined tunnel. The failure of the supports was studied and the restabilization measures were designed.
出处
《南华大学学报（自然科学版）》
2005年第F09期1-6,16,共7页
Journal of University of South China：Science and Technology
关键词
巷道
稳定性分析
加固设计
tunnel
stability analysis
reinforcement design
