温度-应力-化学三场耦合作用下深部软岩巷道蠕变规律数值模拟.pdf

　 第37卷 增刊2 煤　 　 炭　 　 学　 　 报 Vol.37　 Supp.2　 　 2012年 10月 JOURNAL OF CHINA COAL SOCIETY Oct.　 2012　 - - - 　 　 文章编号:0253 9993(2012)S2 0275 05 - - 温度 应力 化学三场耦合作用下深部软岩 巷道蠕变规律数值模拟 王永岩,王艳春 (青岛科技大学 机电工程学院,山东 青岛　 266061) - - 摘　 要:描述了所建立的连续介质温度场 应力场 化学场三场耦合控制方程。 使用有限元程序对 地下1500 m 的深部软岩巷道蠕变规律进行了温度场、应力场和化学场三场耦合过程的三维数值 模拟,分析了温度场、应力场和化学场对深部软岩巷道蠕变规律的影响。 结果表明,深部软岩巷道 产生大应变,主要来源是蠕变,弹性应变和热应变次之;温度场、应力场和化学场对深部软岩巷道蠕 变都产生不可忽视的影响,就影响程度来看,应力场影响最大,化学场和温度场次之。 - - 关键词:深部软岩;温度场 应力场 化学场耦合;蠕变;数值模拟 中图分类号:TD315．3　 　 　 文献标志码:A Numerical simulation of creep law in deep soft rock tunnel under thermal- mechanical-chemical coupling effect WANG Yong-yan,WANG Yan-chun (College of Mechanical and Electronic Engineering,Qingdao University of Science and Technology,Qingdao　 266061,China) Abstract:The control equations for analyzing coupled thermal-mechanical-chemical phenomena of continuous media established was described. A three-dimensional numerical simulation for the coupled thermal-mechanical-chemical process of creep law of deep soft rock tunnel underground 1500 m was carried out by using FEM,and the influences of temperaturefield,stressfieldandchemicalfieldonthecreeplaw ofthedeepsoftrocktunnelwereanalyzed.There- sults shows that deep soft rock produces large strain,and the main source is the creep,elastic strain and thermal strain,followed by;theabovethreefieldscauseimportanteffectsoncreepof deepsoftrocktunnel,accordingtothede- gree of influence,stressfield causes the greatest influence,temperature field and chemical