摘要
目前建立的多孔介质耦合模型通常认为气体是不可压缩的,无法描述气体的输运过程,无法反映气体对水体入渗和固体变形的影响。为了描述多孔介质中固液气三相的渗流应力耦合过程,基于多孔介质理论和有效应力原理,提出了一种耦合了改进守恒水平集(ICLS)方法并考虑气体可压缩性的固液气三相渗流应力耦合模型。将该方法应用于黄壁庄水库坝前冒泡现象的渗流应力耦合分析中,模拟了水位骤升后,固体变形、水体入渗和气体运移过程,及其耦合效应。计算结果表明,该方法能够简单直观的描述水气两相的运移过程及渗流应力耦合过程,且模拟结果与实际观测结果基本一致。
The porous media coupling models established currently usually consider gas as incompressible,which unable to describe the gas transport process,and unable to reflect the effect of gas on water infiltration and solid deformation.Based on the theory of porous media and the principle of effective stress,a stress coupling model of solid-liquid-gas three-phase seepage in porous media is proposed,which is coupled with the improved conservation level set(ICLS)method and considers the compressibility of gas.In this paper,the method is applied to the seepage stress coupling analysis of the bubbling phenomenon in front of the dam of Huangbizhuang Reservoir,and the processes of solid deformation,water infiltration and gas migration after the sudden rise of water level are simulated.The calculation results show that this method can describe the migration process of water and gas phase and the stress coupling process of seepage easily and intuitively,and the simulation results are basically consistent with the actual observation results.
作者
赵兰浩
王卫国
张海容
ZHAO Lanhao;WANG Weiguo;ZHANG Hairong(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210024,Jiangsu,China;College of Civil Engineering,Jiangsu Open University,Nanjing 210036,Jiangsu,China)
出处
《水力发电》
CAS
2024年第5期76-81,共6页
Water Power
基金
国家重点研发计划(2022YFC3005402)。
