摘要
岩爆是采矿和隧道开挖等地下工程的一大地质灾害,并且具有猛烈和瞬发的特性,其复杂的机理已经成为众多工程师和研究人员的研究课题,同时在工程中具有很深远的意义。该文通过将光弹性实验的方法和断裂力学相结合,讨论了岩体内裂纹角度变化对裂纹尖端应力强度因子的影响,同时分析了对远场应力的影响。
The rock burst is a great geological disaster of the underground engineering,i.e.mining and tunnel excavation,and has the violent and prompt characteristics.Its complicated mechanism has become the research topic of any engineers and researchers,and also has the more profound engineering meaning.The article discusses the influence of the crack angle variation within the rock on the stress intensity factor at the crack top through the combination of the photoelasticity experimental method with the fracture mechanics,and also analyzes the influence on the far-field stress.
出处
《城市道桥与防洪》
2012年第3期157-159,5,共3页
Urban Roads Bridges & Flood Control
关键词
岩爆
光弹性
应力强度因子
远场非奇异应力
实验研究
rock burst,photoelasticity,stress intensity factor,far-field nonsingular stress,experimental study
