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

通过分形断裂力学和应力研究表征地下裂缝网络

• 批准号: 04044202
• 负责人: TAKAHASHI H.
• 金额: --
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Overseas Scientific Survey.
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04044202/
• 关键词: Rock; Subsurface Fracture Network; Fracture; Fractal; Crustal Stress; Connectivity

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.

地下裂缝作为流体通道或热交换面，由于缺乏相关资料，使地热发电厂的热输出受到很大限制。本计画旨在发展一种新方法，以“分形断裂力学”为基础，设计先进的地热能萃取系统。“分形断裂力学”的研究涉及多学科，从物理学、地质学到机械工程和资源工程。“分形断裂力学”包括地下裂缝网络的多裂缝表征、通过热交换表面的热质传递建模以及储层岩石的交替过程。

项目成果

K.Watanabe and H.Takahashi: "A Model Analysis of Long-term performance of Hot Dry Rock Geothermal Energy Extraction System" Proceeding of JSME-ASME International Conference on Power Engineering '93.

K.Watanabe 和 H.Takahashi：“干热岩地热能提取系统长期性能的模型分析”，JSME-ASME 国际电力工程会议 93 论文集。

K.Watanabe and H.Takahashi: "Fractal Characterization of Subsurface Network for Geothermal Energy Extraction System" Proceeding of 18th Workshop on Geothermal Reservoir Engineering. 18. (1993)

K.Watanabe 和 H.Takahashi：“地热能提取系统地下网络的分形特征”第 18 届地热储层工程研讨会论文集。