摘要
洋碰隧道是京珠高速公路粤境北段最长的越岭隧道,由于隧址区内地质条件复杂,断裂构造发育,隧道穿过大小断裂20多条,主要灾害形式为涌水,以典型F12、F13断层破碎带交汇处洞内涌水为例,在介绍工程地质特征基础上,分析了隧道涌水原因;由于F12与F13断层影响带较宽,地表水不断补给断层带,地面出现很多陷坑,提出了采用洞内深层注浆与小锚索加固围岩的综合整治措施,通过隧道断面围岩接触压力监测,该断层破碎带整治效果良好。
Yangpeng Tunnel, located in north of Guangdong Segment of Beijing-Zhuhai Expressway, is the longest tunnel through mountain. Gushing water is the important situation due to complex geological condition, developed fracture tectonics, penetrated multiple faults as many as 20. Taking the case of the gushing water happened in the shuttered junction of F12, F13 faults, strata lithology geologic structure and hydrogeologic feature of the landslide are introduced, the causes of gushing water are analyzed. In consideration of broadly influenced zone of F12, F13 faults, faulted zone supplied by surface water and pits appeared in ground, a integrated treatment technique, combined with deep grouting in tunnel and small anchor reinforced the surrounded rocks, is presented. The tunnel is in the situation of stability by means of pressure analysis on monitoring profile of tunnel. The results of treatment show that the integrated treatment technique is an effective method on treating gushing water of tunnel.
出处
《公路》
北大核心
2009年第3期187-193,共7页
Highway
关键词
洋碰隧道
涌水
断层带
整治技术
Yangpeng Tunnel
gushing water
faulted zone
treatment technique
