武隆隧道进口段浅埋软弱围岩的处理技术  

Technique for Treating Soft Wall Rocks of Shallow Depth Near the Portal of Wulong Tunnel

作　　者：孟凡亚 

机构地区：[1]中铁第十四局集团公司渝怀铁路工程指挥部,四川武隆408500

出　　处：《西部探矿工程》2003年第1期99-101,共3页West-China Exploration Engineering

摘　　要：采用地表预注浆和管棚超前预支护技术 ,对渝怀铁路武隆隧道进口段的浅埋、软弱围岩进行处理。实践表明 ,本文所采用的地层预加固方法改善了土体的结构性能 ,提高其自稳性和承载能力 ,取得了预期的加固效果。The ground pregrouting and pipe-roof protection method have been adopted to treat the soft wall rocks of shallow depth near the portal of Wulong tunnel in Yuhuai railway. The practise shows that the technique prestented in this paper can not only improve the performance of soil but also enhance its stability and load bearing capacity.The practical results have achieved the desired expectations.

关 键 词：铁道隧道 洞口 围岩 地表预注浆 管棚 稳定性 加固效果 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]