摘要
在缓倾斜或水平层状岩体中开挖巷道时巷道顶底板弯曲变形和破坏的问题十分突出,巷道往往因这些部位发生过大变形而率先破坏,导致结构的整体失稳。根据层状岩体的特点,分析了其弯曲变形破坏的机理和条件,利用考虑偶应力的Cosserat介质理论,基于Matlab平台编制了相应的计算程序,对水平层状岩体巷道的变形特征及影响因素进行了模拟研究,结果表明Cosserat理论对层状岩体巷道的开挖模拟是适用的,而且简便。
The problem of flexural deformation and failure of the roof of laneway is prominet when a laneway is excavated in horizontal layered rock mass. Customarily, the deformation of roof is so large that it failures first and thus leads to the whole structure collapse. According to its special characters of flexural deformation and failure mechanism, the authors write a program with Matlab based on cosserats＇ theory. By using the program, the deformation character and influencing factors are studied. The result indicates that the cosserats＇ theory is suitable to simulating the laneway excavating in layered rock mass; and it is simple and convenient.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2006年第7期1101-1104,共4页
Rock and Soil Mechanics
基金
国家电公司科技攻关项目(No.KJ00-03-23-03-02)
长安大学自然科学基金项目(No.0305-1001)
