Abstract: By comparing the field test statistics of the surrounding rock pressure of 23 shield tunnels and 44 NATM(new Austrian tunnelling method, NATM)tunnels, the relationship between the surrounding rock pressure of shield tunnels and the buried depth, tunnel diameter and stratum type was studied. The difference between the surrounding rock pressure of shield tunnels and the NATM tunnels was analyzed, and the characteristics of the surrounding rock pressure of shield tunnels were further clarified. The applicability of each surrounding rock pressure calculation formula to the shield tunnel was discussed through calculation and analysis. It was found that the surrounding rock pressure of the shield tunnel increased with the buried depth, and the surrounding rock pressure of tunnels in loess and silty clay stratum was obviously less than that in stratum containing sandy soil. The surrounding rock pressure of NATM tunnels showed an obvious increasing trend with the increase of buried depth and excavation hole diameter. The surrounding rock pressure of the shield tunnel and NATM tunnel was quite different. Due to the timelier lining support of the shield tunnel, the surrounding rock pressure of the shield tunnel was significantly higher than that of the NATM tunnel, and the distribution of surrounding rock pressure along the tunnel perimeter was more uniform. The surrounding rock pressure of the shield tunnel was more inclined to belong to deformation pressure.
韩兴博, 陈子明, 苏恩杰, 梁晓明, 宋桂峰, 叶飞. 盾构隧道围岩压力分布规律及作用模式[J]. 隧道与地下工程灾害防治, 2022, 4(4): 34-43.
HAN Xingbo, CHEN Ziming, SU Enjie, LIANG Xiaoming, SONG Guifeng, YE Fei. The distribution law and action mode of surrounding rock pressure of shield tunnel. Hazard Control in Tunnelling and Underground Engineering, 2022, 4(4): 34-43.
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2022, Vol. 4 
