作　　者： ; ; ; ; ;

机构地区： 东北大学资源与土木工程学院岩石破裂与失稳研究中心

出　　处： 《岩石力学与工程学报》 2005年第A01期5151-5156,共6页

摘　　要： 层状岩层的裂纹饱和现象是地质界的一种普遍现象。基于有限元程序，分析了裂纹饱和现象的机理，从应力转化的角度解释了裂纹饱和现象；研究了单层材料厚度的变化对裂纹间距的影响；给出了层状材料达到饱和状态的全过程；并分析了裂纹的产生、发展规律。 Fracture saturation is a common phenomenon in geosciences. Based on the FEM code, the mechanisms of fracture saturation and the factors influencing the spacing of the fracture are analyzed. The results show that the stress state between the adjacent fractures changes from tension to compression as the ratio of fracture spacing to layer thickness decreases. This stress state transition precludes further infilling of fractures, which results in the fracture saturation. The process of the fracture saturation is vividly represented. And from results of the numerical simulation, the rules of initiation and propagation of the fractures is recognized.

关 键 词： 数值模拟 裂纹饱和 层状岩层 裂纹间距 有限元

领　　域： [理学] [理学]