粘土岩饱和-非饱和渗流机理研究  

RESEARCH ON SATURATED AND UNSATURATED FLOW MECHANISM OF CLAYSTONE

作　　者：陈卫忠[1] 邵建富[2] 杨春和[1] 李飞[1] 李术才[1,3] 苏坤 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学重点实验室 [2]里尔科技大学国家科研中心力学实验室 [3]山东大学岩土与结构工程中心济南250061 [4]法国国家核废料管理局

出　　处：《岩石力学与工程学报》2004年第21期3689-3694,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家重点基础研究发展规划(973)项目(2002CB412704);国家自然科学基金(50379052)资助课题。

摘　　要：非饱和渗流、应力耦合行为是影响粘土类工程岩体的强度和稳定性的重要因素。基于粘土岩实验室非饱和渗流试验的结果,应用塑性应变硬化的非饱和渗流、应力耦合模型,研究在隧道开挖、混凝土衬砌支护和通风的过程中围岩干缩和膨胀的力学机理,得到了围岩内渗流的初始饱和→非饱和→近饱和过程,研究成果对解释工程现场的泥化、崩解机理具有重要的理论和实践意义。Coupled unsaturated flow in claystone has high effect on strength and stability of underground engineering. Based on experimental results of unsaturated flow in claystone, mechanical and unsaturated flow coupled constitutive model is applied to simulate the shrinkage and swelling phenomena in claystone tunnel during excavation, concrete support and ventilation processes. The whole flow process in claystone from state of saturated to desaturated state and then to resaturated state is obtained from the numerical results. The achievements are quite useful to explain the argillization and collapse mechanism in practice, and have great theoretical and practical significance.

关 键 词：工程岩体 干缩 饱和-非饱和渗流 支护 通风 粘土岩 强度 混凝土衬砌 围岩 泥化 

分 类 号：O357.3[理学—流体力学] TV139.14[理学—力学]