摘要
白云隧道地质情况极为复杂,同时穿越F1,F2及F3 3个断层。在开挖至D3K334+733时发生了突水、突泥,为了消除其给施工安全和施工进度带来的极大影响,通过迂回导坑对隧道突水、突泥地段进行横向注浆及设置横向管棚,并结合正洞内全断面帷幕预注浆和大管棚,对该段进行了注浆堵水和加固处理。实践证明,所采用方法合理有效,拱顶沉降控制在合理范围,最终安全地通过了隧道突水、突泥段。
Crossing F1 fault,F2 fault and F3 fault,Baiyun tunnel has extremely complex geological conditions.Mud/water bursting occurs when the tunnel excavation reaches D3K334＋733,which has great impact on the construction safety and construction progress.Transverse grouting and transverse pipe roof for the mud/water bursting tunnel section are executed from inside the bypass gallery and full-face curtain grouting and large pipe roof are executed from inside the main tunnel.In such way,successful water-sealing grouting and consolidation are made for the mud/water bursting tunnel section.In the end,the excavation crosses the mud/water bursting section safely.
出处
《隧道建设》
2011年第4期504-509,共6页
Tunnel Construction
关键词
白云隧道
断层
突水突泥
迂回导洞
横向注浆
横向管棚
Baiyun tunnel
fault
mud/water bursting
bypass gallery
transverse grouting
transverse pipe roof
