管棚法应用于软土地层的稳定性分析

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Abstract 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.

Key words： tunnelling engineering pipe-roof method soft ground arching stability of tunnel face

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	Articles by authors
	SUN Yuyong1
	ZHOU Shunhua2
	XIAO Hongju1
	WANG Mingfang1

Cite this article:

SUN Yuyong1,ZHOU Shunhua2,XIAO Hongju1, et al. APPLICATION OF PIPE-ROOF METHOD TO STABILITY ANALYSIS OF SOFT GROUND[J]. , 2013, 32(s2): 4199-4206.

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/4199

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