长江科学院院报2013，Vol.30Issue(3)：26-29,39,5.DOI:10.3969/j.issn.1001-5485.2013.03.006
基于德鲁克-普拉格准则的围岩损伤区渗透系数研究
Permeability Coefficient of Damage Zone of Surrounding Rock Based on Drucker-Prager Criterion
摘要
Abstract
This research is to provide theoretical basis for the deformation calculation and stability analysis of roadway under seepage action. The analytical solution of circular roadway' s surrounding rock stress field, and the expression of surrounding rock' s permeability coefficient were put forward in consideration of intermediate principal stress based on Drucker-Prager criterion and Damage Mechanics. Moreover, the relation of permeability coefficient K vs. pore water pressure p, and K vs. radius r of surrounding rock' s plastic zone were obtained. Results showed that within the damage area, permeability coefficient K decreased nonlinearly with the increase of r, while increased exponentially with the rise of pore water pressure p.关键词
德鲁克-普拉格准则/损伤变量/中间主应力/渗透系数/孔隙水压力Key words
Drucker-Prager criterion/ damage variable/ intermediate principal stress/ permeability coefficient/ pore water pressure分类
矿业与冶金引用本文复制引用
孙珍平,高召宁,孟祥瑞..基于德鲁克-普拉格准则的围岩损伤区渗透系数研究[J].长江科学院院报,2013,30(3):26-29,39,5.基金项目
国家自然科学基金项目(51074003,51074005) （51074003,51074005）
高等学校博士学科点专项科研基金项目(新教师类)(20093415120001) （新教师类）
安徽省优秀青年科技基金资助项目(10040606Y31) （10040606Y31）
