超硬岩破碎断层带双护盾TBM适用性分析

Applicability Analysis of Double Shield TBM in Ultra Hard Rock Fracture Fault Zone

随着我国水利工程建设的快速发展,水利隧洞工程越来越多地运用到TBM施工技术,但隧洞地质条件复杂,施工前针对TBM的选型及适用性至关重要。结合韩江、榕江、练江水系连通后续优化工程双护盾TBM隧洞超硬岩破碎断层带地质条件,通过对双护盾TBM刀盘系统、主驱动系统、盾体系统、推进系统等进行针对性设计,能适应该工程超硬岩破碎断裂带地层掘进,实施过程中能顺利完成项目隧洞掘进任务,月均进度达到450 m,实现了高效掘进。

With the rapid development of water conservancy engineering construction in China,TBM construction technology is increasingly being used in water conservancy tunnel engineering.Due to the complex geological conditions of the tunnel,the selection and applicability of TBM before construction are crucial.Based on the geological conditions of the ultra hard rock fracture fault zone in the double shield TBM tunnel of the Hanjiang,Rongjiang,and Lianjiang water systems connection optimization project,this article provides targeted design for the double shield TBM cutterhead system,main drive system,shield body system,propulsion system,etc.It can adapt to the excavation of ultra hard rock fractured fault zones in engineering,and successfully completed the tunnel excavation task during the implementation process.The monthly average progress reached 450 m,achieving efficient excavation.