Numerical Modeling of Fracture Spacing in Layered Materials
Fracture Spacing in layered materials is a universal and important geological phenomenon in nature and engineering. Opening-mode fractures in layered materials, such as sedimentary rocks, are often periodically distributed with almost equal spacing. Many researchers have explained the importam phenomena through theoretical models or numerical models. In this paper, we perform three dimensional simulation of fracture growth in a three-layered material model embedded layer with low strength under horizontal hiaxial stretch with a numerical tool of RFPA3D-Parallel (three-dimensional Rock Failure Process Analysis Code for parallel computation) based on finite element method. The model takes material heterogeneity into account. The fractures develop under a quasistatical, slowly increasing biaxial strain. The numerical test represented the whole processes of equal-space fracturing in layered rocks. And the numerical results show the pattern transition from parallel fractures to polygonal fractures depending on the loading conditions. The fractures perpendicularly intersect and divide the rock of embedded layer into many polygon areas except loading in one direction.
fracture spacing rock failure FEM parallel computation
ZHANG Yongbin TANG Chunan LIANG Zhengzhao Li Lianchong
Center for Rock Instability & Seismicity Research,Dalian University of Technology,Dalian 116024,Liao Center for Rock Instability & Seismicity Research,Dalian University of Technology,Dalian 116024,Liao
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1889-1892
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）