Comparisons of 2D and 3D Hydraulic Behaviors of a Fractured Rock Mass by Discrete Fracture Network Analysish
Your abstract should contain less than 200 words using Times New Roman in font 11 with single spacing. The factors that influence on the fluid flow are hydraulic and geometric characteristics of fractures. So two-dimensional (2D) and three-dimensional (3D) discrete fracture network (DFN) approach has widely been used in order investigate the hydraulic behavior of fractured rock mass. 2D DFN approach can have a limit of analyzing 3D rock mass structures. But there were little studies on the relationship between 2D and 3D hydraulic behaviors of a fractured rock mass by a discrete fracture network. This paper focuses on comparison of 2D and 3D hydraulic behaviors of a fractured rock mass using DFN. First, we developed the program that can generate the 2D and 3D DFN and analyze the connectivity of the generated fractures and then estimate the equivalent hydraulic conductivity tensors. And Numerical simulations were performed to compare 2D hydraulic behavior of fractured rock mass with 3D behavior using same hydraulic and geometric characteristics of fractures. The analysis results show that 2D and 3D results could be different. Hydraulic conductivity tensors Kxx, Kyy, Kzz by analysis were larger than them by 3D. And a representative element volume (REV) size for the hydraulic behavior of a fractured rock mass in 2D analysis was larger than it by 3D. 2D DFN seemed to overestimate hydraulic conductivity tensors comparing with 3D. And Ratios of hydraulic conductivity tensors, Kxx /Kyy, Kyy /Kzz and Kzz /Kxx in 2D analysis were larger than 3D. The results can give reference to engineering projects in a fractured rock mass.
S.H.BANG S.JEON
Dept. of Energy System Engineering, Seoul University, Seoul, Korea
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）