摘要
根据梁的受力理论,对层状顶板的破坏进行了力学分析。通过层状顶板破断的演化过程来研究其破断机理,探讨了层状顶板的应力分布状态。运用东北大学岩石破裂与失稳研究中心的岩石破裂过程分析系统(RFPA2D)对高跨比对复合层状顶板稳定性的影响进行了数值模拟计算,得出了不同高垮比对巷道稳定性的影响情况。
In this paper, the mechanical analysis of layered rock roof breakage is carried out based on forcing beam theory, the breaking mechanism of layered rock roof is researched according to the evolution of its breakage, and the distribution pattern of stress in layered rock roof is discussed, the numerical simulation and calculation of the influence of high -span ratio on the stability of composite and layered rock roof is carried out by use of Rock Failure Process Analysis （ RFPA^20） of CRISR, resulting in the influencing level of various high - span ratio on the stabili- ty of roadway roof.
出处
《矿业研究与开发》
CAS
北大核心
2006年第1期17-19,共3页
Mining Research and Development
关键词
高跨比
层状顶板
稳定性
煤巷
数值模拟
High- span ratio, Layered roof, Stability, Coal roadway, Numerical simulation
