软岩隧道大变形研究现状及控制对策  

Research Status and Control Countermeasures of Large Deformation of Soft Rock Tunnel

作　　者：王哲 刘钦[1] 刘磊[1] 赵红宇 黄坤鹏 WANG Zhe;LIU Qin;LIU Lei;ZHAO Hongyu;HUANG Kunpeng(School of Civil Engineering,Chang’an University,Xi’an 710061,China)

机构地区：[1]长安大学建筑工程学院,西安710061

出　　处：《铁道建筑》2022年第12期138-142,共5页Railway Engineering

基　　金：国家自然科学基金(41877230);西安市岩土与地下工程重点实验室开放基金(XKLGUEKF20-01);中央高校基本科研业务费资助项目(300102281206)。

摘　　要：基于既有研究成果,从围岩的变形特征、强度特性等方面总结了软岩的定义和分级方法,从围岩的矿物组成和力学机制等方面归纳了大变形的成因、分类和分级方案。结合大变形的影响因素阐述了软岩隧道大变形机理,归纳了基于弹塑性理论和回归分析的变形预测方法。从洞室开挖、支护施作、信息监测三个方面总结了软岩隧道大变形的控制对策,指出了当前软岩隧道大变形预测和支护中存在的问题及进一步研究方向。Based on the existing research results,the definition and gradation methods of soft rock were summarized from the aspects of deformation and strength characteristics of surrounding rock,the causes,classification and gradation scheme of large deformation were summarized from the aspects of mineral composition and mechanical mechanism of surrounding rock.Combined with the influencing factors of large deformation,the large deformation mechanism of soft rock tunnel was expounded,and the deformation prediction method based on elasto-plastic theory and regression analysis was summarized.The control countermeasures for large deformation of soft rock tunnel from three aspects of tunnel excavation,support construction and information monitoring were summarized,the existing problems and further research directions in large deformation prediction and support of soft rock tunnels were pointed out.

关 键 词：铁路隧道 控制对策 统计分析 软岩隧道大变形 高地应力 开挖工法 变形预测 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]