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Numerical Analysis of Water Flow and Heat Transfer Influence on Temperature in Plutones With Sparse Orthogonal and Non-orthogonal Fracture
Author(s): 
Pages: 318-324
Year: Issue:  4
Journal: Uranium Geology

Keyword:  正交与非正交裂隙岩体水流-传热数值分析;
Abstract: 为研究正交与非正交稀疏裂隙岩体水流-传热对温度的影响,采用三维离散单元法程序(3 Dimension Distinct Element Code,简称3DEC)分析正交与非正交稀疏裂隙岩体水流-传热对温度场影响规律.研究表明:正交裂隙水流显著改变了岩体温度场;由于交叉裂隙水流动传热,致使裂隙水流动区域等温线出现明显的断续态,从瞬态到稳态,岩体温度升高,温度梯度逐渐减小.对比正交裂隙岩体模型,当横裂隙向下倾斜,纵裂隙靠近热源时,裂隙岩体温度升高;对比非正交裂隙岩体模型,当横裂隙倾斜度不变,纵裂隙远离热源时,裂隙岩体温度降低.非正交裂隙出水口水温高于正交裂隙出水口水温,纵裂隙靠近热源时裂隙出水口水温高于纵裂隙远离热源时裂隙出水口水温;非正交裂隙岩体模型比正交裂隙岩体模型达到稳态所需要的时间更短,纵裂隙靠近热源时的模型比纵裂隙远离热源时的模型达到稳态所需时间更长.
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