CAJ | 학술논문

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.
대서객운전선흔주수도사천대운고속공로,동정지고속로면토층교천,차토체구습함성,침강공제요구겁고.시공채취자진식관붕진행일차성초전지호,기보증료고속공로적안전운영,우유효적공제료로면침강.시공실천충분증명료자진식관붕구유일차성시주거리장、정도가공성강、대지면침강영향소、주장포만도가공등우점,위자진식관붕기술적추엄응용제공료차감경험.
@@@@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.