水利学报2011，Vol.42Issue(12)：1432-1437,6.
高地应力场岩体深部卸荷断裂带的梯度项塑性算法分析
Analysis of Gradient-Plasticity algorithm for deep unload rock in high ground stress field
摘要
Abstract
Based on the Gradient-Plasticity algorithm, geologic feature of deep unloading for left bank of the Jinping I Project is presented. The Gradient-Plasticity algorithm is a new unlocalization method. Local soften unloading of rock body is not defined in local zone, but determined in integral dot and whole region of influence. The gradient term of plastic strain is introduced into the relation of stress and strain. The results of two-dimensional and three-dimensional computation for left bank of the Jinping I Project is both disclosed the consistency of deep plasticity in space distribution of unloading position. The Gradi- ent-Plasticity yielding is presented on unloading broken of rock body in the condition of high ground stress confining pressure. At last, the local unloading belt tends to relative stable after local stress releasing. Computational results agree with the characteristics of deep unloading cracks in the Project district.关键词
深部卸荷/高地应力场/梯度塑性算法/锦屏一级Key words
Deep unloading/High ground stress field/Gradient-Plasticity algorithm/Jinping I分类
建筑与水利引用本文复制引用
唐天国,谢新生,段云岭..高地应力场岩体深部卸荷断裂带的梯度项塑性算法分析[J].水利学报,2011,42(12):1432-1437,6.基金项目
二滩水电开发有限责任公司合同资助项目 （）
