考虑衬砌作用下的软岩巷道弹塑性解  

An Elastoplastic Solution of Soft Rock Roadway with Lining Effect Taken into Consideration

作　　者：刘俊杰 杨自友 贺杨 LIU Junjie;YANG Ziyou;HE Yang(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601

出　　处：《湖南工业大学学报》2025年第3期8-15,共8页Journal of Hunan University of Technology

基　　金：安徽省高校自然科学研究基金资助重点项目(KJ2021A0610)。

摘　　要：考虑衬砌作用下的软岩巷道,基于统一强度理论准则,结合围岩变形三分区模型和三阶段应变软化模型,分析中间主应力、黏聚力、衬砌等因素的影响,推导巷道围岩应力、塑性区大小、塑性区径向位移的解析解,结合工程实例,分析围岩变形各因素影响规律。结果表明:中间主应力等各因素对巷道围岩塑性区均具有重要影响,在一定范围内控制黏聚力大小、提高中间主应力和衬砌弹性模量均能够有效地控制围岩的变形和塑性区的发展。Considering the soft rock roadway under the lining effect,based on the unified strength theory criteria,combined with the three-zone model of surrounding rock deformation and the three-stage strain softening model,an analysis has been made of the influence of such factors as intermediate principal stress,cohesion,and lining effect,with analytical solutions for stress,plastic zone size,and radial displacement of roadway surrounding rock derived,followed by an analysis of the influence of various factors on surrounding rock deformation through engineering examples.The results indicate that various factors such as the intermediate principal stress have a significant impact on the plastic zone of the surrounding rock in the tunnel,controlling the magnitude of cohesion,increasing the intermediate principal stress,and improving the elastic modulus of the lining can effectively control the deformation of the surrounding rock and the development of the plastic zone within a certain range.

关 键 词：统一强度理论 软岩巷道 衬砌 分区破坏 

分 类 号：TU457[建筑科学—岩土工程]