黄土隧道偏压浅埋地段施工技术  

The Construction Technique of the Shallowly-burying Voltage Bias Area in Loess Tunnel

作　　者：赵继平[1] 刘建萍[1] 

机构地区：[1]中铁一局集团第五工程有限公司,陕西宝鸡721006

出　　处：《西部探矿工程》2010年第6期166-169,共4页West-China Exploration Engineering

摘　　要：针对太中银铁路横山隧道偏压浅埋黄土地层,施工中分别采用18m长管棚超前支护进洞,减压、反压措施来缓解偏压、分部掘进减小一次开挖跨度和高度、增加钢架底部支撑受力面积控制钢架下沉等技术措施,确保了横山隧道顺利通过该段不良地层。In accordance with characteristic of Hengshan tunnel of Tai-Zhong-Yin railway of bias of the Shallowly-burying tunnel in Loess superstratum, a long pipe trellis of 18m leading support excavation, pressure reduction and Anti-pressure methods relieve bias; Step-by-step tunneling reduce span and height of whole excavation;Increase in force to support a steel frame at the bottom area of control technologies steel sink measures, technology ensure tunnel smoothly through the smooth formation of the bad paragraph.

关 键 词：黄土 隧道 偏压 浅埋 支护 量测 

分 类 号：U455[建筑科学—桥梁与隧道工程]