Abstract：The mountaintop section of Wushaoling tunnel lies in the F4~F7 compression faultage of Qilianshan tectonic area, in which has high original stress. The high stress will be decreased for the displacement of phyllite because the excavation and construction in the weak ground will lead to the larger strain from structure of tunnel. The differential support parameters from four experiment sections have been compared with and analyzed by the displacement tests, so we can drawn the followings conclusions by series of the studies in this paper: the preparatory support parameters on the experiment section of Wushaoling tunnel can be gained; and the H175 type steel with thick limb can offer enough support strength during early phase, especially can ensure the horizontal safety and stabilization of the steel arch; the small diameter rock anchor can offer the support structure larger force. And it shows the large deformation characters which control the support structure the strain from flexible to rigid as well as from free to restraining.
张继奎,方俊波. 高地应力千枚岩大变形隧道支护参数试验研究[J]. 铁道工程学报, 2005, 22(5): 66-70.
ZHANG Ji-kui,FANG Jun-bo. EXPERIMENT RESEARCH ON SUPPORT PARAMETERS OF LARGE STRAIN PHYLLITE TUNNEL UNDER HIGH STRESS. 铁道工程学报, 2005, 22(5): 66-70.
2005, Vol. 22 
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