| LIU Dongdong,SONG Wenjie,LU Wei,ZHONG Guo,YANG Tao.Effect of stochastic fracture surface roughness on water flow and heat transfer in fractured rocks[J].中国水利水电科学研究院学报,2025,23(4):449-459 |
| Effect of stochastic fracture surface roughness on water flow and heat transfer in fractured rocks |
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| 投稿时间：2024-12-10 |
| DOI：10.13244/j.cnki.jiwhr.20240245 |
| 中文关键词: |
| 英文关键词:discrete fracture networks roughness distribution hydro-mechanical aperture model seepage and heat transfer |
| 基金项目:College Students Innovation and Entrepreneurship Project of Guangzhou Railway Polytechnic（2025CXCY015） |
| 作者 | 单位 | E-mail | | LIU Dongdong | Guangzhou Railway Polytechnic, Guangdong Guangzhou, 511300, China | | | SONG Wenjie | China Institute of Water Resources and Hydropower Research, Beijing, 100038, China | songwj@iwhr.com | | LU Wei | China Institute of Water Resources and Hydropower Research, Beijing, 100038, China | | | ZHONG Guo | Guangzhou Railway Polytechnic, Guangdong Guangzhou, 511300, China | | | YANG Tao | Guangzhou Railway Polytechnic, Guangdong Guangzhou, 511300, China | |
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| 中文摘要: |
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| 英文摘要: |
| As the dominant seepage channel in rock masses， it is of great significance to study the influence of fracture roughness distribution on seepage and heat transfer in rock masses. In this paper， the fracture roughness distribution functions of the Bakhtiary dam site and Oskarshamn/Forsmark mountain were fitted using statistical methods. The COMSOL Multiphysics finite element software was utilized to analyze the effects of fracture roughness distribution types and empirical formulas for fracture hydraulic aperture on the seepage field and temperature field of rock masses. The results show that： （1） The fracture roughness at the Bakhtiary dam site and Oskarshamn/Forsmark mountain follows lognormal and normal distributions， respectively； （2） For rock masses with the same expected value and standard deviation of fracture roughness， the outflow from rock masses with lognormal distribution of fracture roughness is significantly larger than that of rock masses with normal distribution of fracture roughness； （3） The fracture hydraulic aperture， outflow， and cold front distance of the Li and Jiang model are significantly larger than those of the Barton model； （4） The outflow， hydraulic pressure distribution， and temperature distribution of the Barton model are more sensitive to the fracture roughness distribution type than those of the Li and Jiang model. |
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