大西客运专线忻州隧道自进式管棚施工技术  

Construction Technology of Self Drilling Pipe Shed in a Tunnel in Shanxi

作　　者：郭峰[1] 刘安[1] 郭宝海[1] 

机构地区：[1]河南省地矿局第五地质勘查院,河南郑州450000

出　　处：《探矿工程（岩土钻掘工程）》2013年第4期81-84,共4页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：大西客运专线忻州隧道斜穿大运高速公路,洞顶至高速路面土层较浅,且土体具湿陷性,沉降控制要求极高。施工采取自进式管棚进行一次性超前支护,既保证了高速公路的安全运营,又有效的控制了路面沉降。施工实践充分证明了自进式管棚具有一次性施做距离长、精度可控性强、对地面沉降影响小、注浆饱满度可控等优点,为自进式管棚技术的推广应用提供了借鉴经验。Xinzhou tunnel section of Datong - Xi＇ an is oblique crossing Dayun expressway, the tunnel top is near the col- lapsible soil of expressway, so settlement control requirements are very strict. By one-time advanced support using self drill- ing pipe shed, the safe operation of expressway was ensured and pavement settlement was effectively controlled. The con- struction practice shows that self drilling pipe shed has advantages of one-time long distance construction, precious constru- ability, less ground settlement and controllable grouting fullness, and can be the reference to the application of self drilling pipe shed technology.

关 键 词：湿陷性土层 自进式管棚 超前支护 隧道施工 大西客运专线 忻州隧道 

分 类 号：U455.49[建筑科学—桥梁与隧道工程]