安全与环境工程2026，Vol.33Issue(2)：99-107,9.DOI:10.13578/j.cnki.issn.1671-1556.20250273
考虑非线性流动特性的裂隙岩体传热模拟
Heat transfer simulation of fractured rock mass considering nonlinear flow behavior
摘要
Abstract
A finite volume method is proposed for the thermo-hydro coupling in fractured rock masses,which accounts for the nonlinear flow behavior in fractures.Firstly,the finite volume discrete formulations of the Forchheimer flow and heat transfer equations were derived.Then,these formulations were assembled into a system of nonlinear algebraic equations via flux/heat transfer functions between the fracture medium and the rock matrix,which was then solved by direct iterative method.The reliability of the proposed method in simulating nonlinear flow was subsequently verified through an intersecting fracture model.Finally,taking the Habanero geothermal reservoir in Australia as an example,the geothermal production process under different injection pressures was simulated to analyze the heat extraction efficiency of the reservoir.The results indicate that high injection pressure reduces the production life of the reservoir,but with further increase of injection pressure,the production life decreases to a constant value.Furthermore,Forchheimer flow significantly increases flow resistance through nonlinear inertial effects,resulting in actual flow rates being lower than linear flow predictions at high injection pressures,and intensifies the preferential channeling effect of fluids in the main fractures.These findings provide references for the injection and production design of dry geothermal reservoirs.关键词
裂隙岩体/非线性流动/热-水耦合/裂隙介质/地热系统Key words
fractured rock mass/nonlinear flow/thermo-hydro coupling/fractured media/geothermal system分类
资源环境引用本文复制引用
刘加丽,王书钰,陈浩,熊峰,朱淳,张国华..考虑非线性流动特性的裂隙岩体传热模拟[J].安全与环境工程,2026,33(2):99-107,9.基金项目
湖北省自然科学基金(三峡创新发展联合基金)重点项目(2024AFD361) （三峡创新发展联合基金）
中国五矿集团有限公司科技专项计划"揭榜挂帅"项目(WKZB2512BJM500415/011) （WKZB2512BJM500415/011）
