摘要
深厚覆盖层为多孔岩土介质,应力场与渗流场相互作用,存在流固耦合效应。基于比奥固结理论,建立了渗流场与应力场耦合的数学模型;计算分析了某闸坝工程深厚覆盖层基础内防渗墙的应力变形。研究结果表明,考虑流固耦合效应的防渗墙应力变形比不考虑流固耦合效应的要小。
Because the earth and rock materials in deep overburden are mainly consisted of porous geotechnical media, the stress and seepage fields are interacted which is known as the coupling effect between the stress and seepage fields. Based on Biot＇s consolidation theory, a mathematical model and its finite element calculation formula accounting for the stress-seepage coupling are established and applied to calculate the stress-deformation of cutoff wall in a deep overburden under a sluice dam. The calculation shows that the stress-deformation of the cutoff wall after considering the coupling effect is smaller than that without considering the coupling effect.
出处
《水力发电》
北大核心
2012年第12期22-24,30,共4页
Water Power
关键词
渗流场
应力场
耦合
深厚覆盖层
防渗墙
seepage field
stress field
coupling
deep overburden
cutoff wall
