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使用离散的气-水界面模拟裂隙网络非饱和渗流 预览 被引量:1

Fluid Flow in Unsaturated Fissures Modeled by Discrete Air-Water Interface
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摘要 非饱和带裂隙中的饱和区和排干区可以用一个离散的气-水界面分隔开.此气-水界面的位置可以用边界元数值方法通过迭代确定,这样就可以实现对单裂隙内非饱和渗流的描述.将此数值方法推广到裂隙网络中,为用离散裂隙网络模型模拟裂隙岩体非饱和渗流提供了初步的框架.几个算例的计算结果验证了计算程序的正确性. A numerical method for fluid flow in unsaturated fissures is presented. The capillary theory and the unsaturated flow features for unsaturated fracture are studied simultaneously. A discrete air-water interface is used to separate the saturated zones from the drained zones within each single fracture of fracture network. A numerical method is developed to look for the position of the equilibrium air-water interface by using the Newton-Raphson iteration scheme, which can give a frame for modeling unsaturated flow in fractured rocks with the discrete fracture network models.
作者 宋晓晨 徐卫亚 邵建富 Song, Xiaochen[1]; Xu, Weiya[1]; Shao, Jianfu[2]
出处 《岩石力学与工程学报》 EI CAS CSCD 北大核心 2004年第19期 3252-3257,共6页 Chinese Journal of Rock Mechanics and Engineering
基金 国家自然科学基金,国家重点基础研究发展计划(973计划)
关键词 水力学 非饱和裂隙 渗流 气-水界面 Flow of fluids Fracture mechanics Interfaces (materials) Numerical methods
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