摘要
依托乌鲁木齐地铁1号线三—宣区间隧道工程,研究了隧道穿越无胶结堆石料区的变形破坏特征。分析表明,地层破坏模式为超前掌子面的不良地质体失稳突破后涌入隧道,且破坏无缓变过程,具有突变性。基于此,提出了隧道施工穿越无胶结堆石料区时的隧道滑塌防治技术,经实践,取得了理想的效果。
Based on the Sangong-Xuanrendun interval tunnel project of Urumchi metro line 1, the deformation failure characteristics of metro tunnel passing through the non-cementing rockfill area have been studied. The analysis shows that the deformation failure mode is due to swarming into tunnel by instability and breakthrough of unfavorable geological body of leading tunnel face. Furthermore, such failure is developing in gradual and mutable process. Based on this, the technology for precaution of tunnel collapse in the area of non-cementing rockfill has been proposed and the ideal effect has been gained by such practice.
出处
《建筑施工》
2017年第8期1277-1279,共3页
Building Construction
关键词
地铁隧道
无胶结堆石料
变形破坏特征
突变性
防治技术
subway tunnel
non-cementing rockfill
deformation failure characteristics
mutability
precautiontechnology
