摘要
围绕深部岩体工程的分区破裂化现象,通过数值模拟方法研究了深部硐室围岩分区破裂化现象产生的力学机理及其应力的变化规律。针对深部圆形硐室围岩,分别对应力状态Py>Px、Py=Px、Py<Px进行数值模拟,发现了深部围岩产生的应力集中现象。当应力集中的应力值超过岩石的强度时,就会产生分区破裂化现象。
The mechanics mechanism and stress changing law of the occurrence of zonal disintegration phenomenon of rock mass around deep grotto was researched through the numerical simulation revolved around this phenomenon of deep rock mass engineering. The stress state of rock mass around deep round grotto was simulated under three stress states （Py 〉Px, Py =Px, Py 〈Px）. Then stress concentration phenomenon which was engendered by the deep surrounding rock was found. It was the zonal disintegration phenomenon that occurred when the concentrated stress value of the deep sur rounding rock was more than its strength value.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2014年第2期89-94,共6页
Journal of Wuhan University of Technology
基金
国家自然科学基金(2005037222)
中国博士后科学基金(2005037222)
关键词
深部硐室围岩
分区破裂化现象
数值模拟
应力集中
rock mass around deep grotto
zonal disintegration phenomenon
numerical simulation
stress con-centration
