南华大学学报（自然科学版）2025，Vol.39Issue(3)：10-15,45,7.DOI:10.19431/j.cnki.1673-0062.2025.03.002
热流耦合条件下粗糙度对单裂隙岩体中氡迁移特性的影响研究
Study on the Effect of Roughness on Radon Migration Characteristics in Single-fracture Rock Under Heat-flow Coupling Conditions
摘要
Abstract
In order to investigate the effect of rock fracture roughness on radon migration properties in the fracture medium under heat flow coupling conditions,a blue light binocu-lar scanner was used to collect the surface structure of natural granite samples to obtain their surface roughness data,which was combined with the theoretical calculation of the three-dimensional(3D)joint roughness coefficient(JRC)and the 3D modeling software to generate the model of fracture assemblies with different roughness levels.Fracture assem-blies containing different levels of roughness(JRC=1～20)were produced using 3D print-ing technology,and cast into rough single fracture rock specimens through molds,and ra-don migration tests under heat-flow coupling conditions were carried out on the prepared specimens to study the radon migration characteristics of fracture rock samples with different roughness at different temperatures.The experimental results show that under the same conditions,the radon concentration at the outlet of fractured rock samples decreases as the JRC of the fracture surface increases.With the increase in the surface roughness JRC of the fractured rock samples,the influence of roughness on the radon migration within single fractured rock samples gradually decreases.Temperature has a significant im-pact on the radon migration within single fractured rock samples.Within the same time pe-riod,the measured values of radon gas at the outlet increase significantly with the increase in temperature.关键词
裂隙粗糙度/单裂隙/氡迁移特性/热流耦合Key words
fracture roughness/single-fracture rock specimen/radon migration characteris-tics/heat flow coupling分类
资源环境引用本文复制引用
程诺,冯胜洋,陈启富,周瑞,康虔..热流耦合条件下粗糙度对单裂隙岩体中氡迁移特性的影响研究[J].南华大学学报（自然科学版）,2025,39(3):10-15,45,7.基金项目
国家自然科学基金项目(12475342) （12475342）
湖南省自然科学基金面上项目(2023JJ30494) （2023JJ30494）
湖南省教育厅科学研究重点项目(22A0296) （22A0296）
