摘要
根据大型地下洞室中复杂断层对围岩稳定的影响,提出了隐含断层单元的数值模拟计算方法。该方法将复杂断层单元隐含在岩体单元中,使得岩体单元的剖分不受断层切割的影响。使用这种隐含的断层单元,不但将受复杂断层切割的大型复杂地下洞室群的有限单元离散简单化,加快分析计算周期,而且能够有效地反映断层对复杂地下洞室围岩稳定的影响。通过对三峡地下厂房复杂断层结构的分析计算,证明该方法为复杂断层结构的分析提供了一种十分有效的计算方法和思路。
In order to reflect the influence of complex geologic faults in large underground chamber, the authors put forward a numerical simulation and analysis method for the connotative fault element. The method establishes an equivalent element comprising both rock material and fault material, which can decrease the influence of faults incision. By this way, not only the mesh generation of large underground chambers becomes relatively convenient and feasible, but also the influence of complex geologic faults on stability of surrounding rocks is reflected effectively. At last, a sample about underground chamber of Three Gorges Project is givdn, which testifies that the method is reasonable and provides an effective computation method and train of thought for the analysis of complex geologic faults structure.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2006年第6期880-884,共5页
Rock and Soil Mechanics
基金
湖北省环境岩土工程重点实验室开放课题支持课题(No.T110304)
关键词
复杂地质
隐含断层
数值分析
complex geology
connotative fault
numerical analysis
