摘要
在隧道施工中,涌水现象时有发生,特别是在岩体破碎、节理特别发育、透水性较好的富水区施工,其情况尤为严重,安全隐患巨大。三清山隧道通过F1断层破碎带、强富水区,下穿河道,施工过程中采取超前地质预报、周边预注浆和加强支护等措施;为防止隧道断层段洞顶地表河流的水直接流向隧道洞内,在洞顶地表沟谷采用浆砌片石铺砌处理。有效的控制了掌子面涌水,保证了隧道施工的进度和质量,取得了良好的经济效益和社会效益。为同类隧道断层破碎带的涌水整治提供一定的参考。
In the course of the construction of a tunnel,the phenomena of water gushing often happen,especially in the course of the construction of projects located in the broken rock,joint-developed or well permeable water-rich areas,where it is even more serious with greater potential accidents existing.As the Sanqingshan Tunnel goes through the F1 fault fracture zone,which is much water-rich,and under-crosses a river,the measures of the advanced geological forecast,advanced surrounding pre-grouting and the strengthened supporting are taken in the course of the construction.In order to prevent the ground-surface-river water from directly flowing into the tunnel roof through the fault section of the tunnel,the river valley at the top of the tunnel is treated with mortar rubble,owing to which the water gushing at the work face is effectively controlled,and the tunneling progress and good quality of the tunnel is ensured,with fine economic and social benefits achieved.The paper may serve as a useful reference for the harnessing of water gushing of other similar tunnels in broken fault fracture areas.
作者
李小勇
LI Xiaoyong(The Jingfumin＇gan Passenger Oriented Railway Co.Ltd. ,Fuzhou 350000,Chin)
出处
《国防交通工程与技术》
2017年第1期54-56,71,共4页
Traffic Engineering and Technology for National Defence
关键词
涌水
断层破碎带
超前地质预报
超前周边预注浆
tunnel
water gushing
fault and fracture zone
advanced geological prediction
advanced surrounding pre-grouting
