深厚覆盖层地基非稳定渗流场与应力场耦合分析研究  

Coupling Analysis and Research of Unsteady Seepage Field and Stress Field on Deep Overlying Stratum

作　　者：赵巍 牟宏 

机构地区：[1]大庆市松嫩工程管理处,黑龙江大庆163311

出　　处：《黑龙江水利科技》2017年第5期32-35,共4页Heilongjiang Hydraulic Science and Technology

摘　　要：在深厚覆盖层地基的基础上筑建大坝,坝体与坝基的稳定性至关重要,其评价指标之一是渗流场与应力场的相互作用及影响。这种复杂地基的岩体力学特征单一且不稳定,相互影响表现在应力场改变渗流场的渗透系数,反之渗流场改变应力场的空间分布。文章假定地基为连续介质,在多孔连续介质渗流与应力相互耦合的理论基础上,分析研究二者之间的相互作用,并开发适用于此地基的渗流场与应力场耦合的有限元计算程序,应用于工程实例中,所得计算结果及结论在实际工程中具有一定的指导意义。To construct dams on deep overlying stratum,the stability of dam body and dam foundation is very important,one of the evaluation indexes is interaction and effect between the seepage field and stress field. The rock mass mechanical characteristics of the complex foundation is single and unsteady,their mutual effect shows that the stress field changes the seepage coefficient of seepage field,on the contrary,the seepage field changes the special distribution of stress field. It is assumed that the foundation is continuous media in this paper,the interaction between both is analyzed and researched based on porous continuous media seepage and stress inter-coupling,to develop a finite element calculation program suitable for the seepage field and stress coupling field on the foundation and to be applied in the project cases,the results and conclusion will have guiding meanings for the engineering examples.

关 键 词：深厚覆盖层 地基 非稳定渗流场 应力场 耦合 

分 类 号：TV223.4[水利工程—水工结构工程]