CAJ | 학술논문

在软土地区采用管棚法施工浅埋隧道，管棚间以及掌子面土体的稳定是影响“棚架体系”能否发挥的决定性因素。首先分析影响管棚间土体形成微拱的因素，根据莫尔-库仑抗剪强度理论，推导管棚间土体形成微拱的判定方法，即拱顶和拱脚同时处于稳定状态。其次将掌子面稳定假定为上覆荷载作用下的三维边坡稳定问题，推导管棚法隧道掌子面稳定的判定方法。最后以杭州市一过街通道为例，应用上述判定方法，对管棚间土体以及掌子面稳定进行计算分析，并提出合理建议，保证隧道的安全。
재연토지구채용관붕법시공천매수도，관붕간이급장자면토체적은정시영향“붕가체계”능부발휘적결정성인소。수선분석영향관붕간토체형성미공적인소，근거막이-고륜항전강도이론，추도관붕간토체형성미공적판정방법，즉공정화공각동시처우은정상태。기차장장자면은정가정위상복하재작용하적삼유변파은정문제，추도관붕법수도장자면은정적판정방법。최후이항주시일과가통도위례，응용상술판정방법，대관붕간토체이급장자면은정진행계산분석，병제출합리건의，보증수도적안전。
The stability of soft soil between pipe-roofs and tunnel face is the decisive factor which affects the display of pipe-roof and grating system. Firstly,the influencing factors of the formation of arch are studied. According to the Mohr-Coulomb shear strength theory,the determination method for the stability of soil between pipe-roof is derived,that is when the vault and skewback are both in steady state. Secondly,the tunnel face stability is assumed to be the three-dimensional slope stability problem under cover loads;and the determination method for the stability of tunnel face is derived and applied to an underpass in Hangzhou City to calculate the soil stability between pipe-roofs and tunnel face. The reasonable proposals are then put forward to ensure the tunnel safety.