Characterization of the Subsurface Fracture Network by Means of Fractal Fracture Mechanics and Stress Studies

由于地下裂缝表现为流体通道或换热表面的信息很少，地热发电厂的热能输出受到了极大的限制。本项目旨在开发一种基于“分形断裂力学”的先进地热能提取系统的设计方法。“分形断裂力学”的研究涉及从地球物理学、地质学到机械和资源工程的多学科领域。“分形断裂力学”包括地下裂隙网络的多裂隙描述、通过换热面的传热传质模拟和储集岩的交代过程。

The thermal output of geothermal power plants has been limited so much because of few information on subsurface cracks, which behave as fluid path or heat exchanging surfaces. this project aims at developing a new methodology for design of advanced geothermal energy extraction system based on "Fractal Fracture Mechanics". A study on "Fractal Fracture Mechanics" has a multidisciplinary aspect ranging from geophysics and geology to mechanical and resources engineering. "Fractal Fracture Mechanics" includes multi-crack characterization of subsurface fracture networks, modelling of heat and mass transfer through the heat exchanging surfaces, and alternation process of reservoir rocks.