井筒在孔隙压力和渗流作用下的统一极限分析  

UNIFIED LIMIT ANALYSIS OF A WELLBORE UNDER THE EFFECT OF PORE PRESSURE AND SEEPAGE

作　　者：李建春[1] 俞茂宏[1] 王思敬[1] 

机构地区：[1]西安交通大学建筑工程与力学学院,西安710049

出　　处：《机械强度》2001年第2期239-242,共4页Journal of Mechanical Strength

基　　金：国家自然科学基金资助项目 (597790 2 8)

摘　　要：采用统一强度理论 ,考虑井筒周围岩石的孔隙压力和渗流作用 ,对井筒进行弹塑性分析 ,求出保持井壁稳定的弹性极限载荷和塑性极限载荷的统一解析式。以往基于Mohr Coulomb强度理论和双剪强度理论的解均为该解的特例。所得的统一解可以用于适合不同强度理论的各类岩石材料的极限分析。Based on the unified strength theory, the elastic and plastic analyses, which take account of the effect of pore pressure and seepage on the rock of a wellbore, were proceeded. The unified solutions of the elastic and plastic limit loads for the wellbore stability were also deduced. The solutions in view of Mohr Coulomb strength theory and the twin shear strength theory are all their special cases. The unified solution can be applied for the limit analysis of all kinds of rocks.

关 键 词：统一强度理论 井壁稳定 极限载荷 孔隙压力 渗流 井筒 

分 类 号：TD262[矿业工程—矿井建设] O344.5[理学—固体力学]