登楼山隧道膨胀岩变形机理及防治措施  

DEFORMATION MECHANISM AND MITIGATION MEASURES FOR EXPANSIVE ROCK IN THE DENGLOU MOUNTAIN TUNNEL

作　　者：向立辉 谢剑雄 XIANG Lihui;XIE Jianxiong(CCCC Second Highway Consultants Co.,Ltd.,Wuhan 430056,China;Wuhan Fanhou Geological Prospecting Co.,Ltd.,Wuhan 430050,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430056 [2]武汉凡厚地质勘察有限公司,武汉430050

出　　处：《低温建筑技术》2024年第9期77-80,100,共5页Low Temperature Architecture Technology

摘　　要：膨胀岩是工程中的一种特殊地质,隧道穿越膨胀岩层极易引起隧道结构变形和破坏。研究膨胀岩隧道变形破坏机理有重要的工程实践意义。依托弥玉高速公路登楼山隧道,通过室内试验,结合工程地质、水文地质和施工工艺等对膨胀岩变形原因进行了深入分析。通过荷载-结构法对多种工况的隧道结构安全性进行了定量评价,在此基础上提出优化隧道断面、动态调整支护参数和地下水防治的综合处治措施,可为膨胀岩隧道工程的设计和施工提供参考。Expansive rock is a special geological condition in engineering that can easily lead to deformation and damage of tunnel structures when crossing expansive rock layers.Studying the deformation and failure mechanisms of tunnels in expansive rock is of significant practical importance.Based on the Denglou Mountain Tunnel of the Miyu Expressway,this research conducts an in-depth analysis of the deformation causes of expansive rock through laboratory experiments and integrates geological,hydrogeological,and construction process factors.Using the load-structure method,the safety of tunnel structures under various conditions is quantitatively evaluated.Based on these findings,the study proposes comprehensive mitigation measures,including optimizing tunnel cross-sections,dynamically adjusting support parameters,and groundwater control,which can provide valuable references for the design and construction of tunnels in expansive rock.

关 键 词：膨胀岩层 荷载-结构法 隧道断面 支护参数 

分 类 号：TU441.3[建筑科学—岩土工程]