水工圆形隧洞围岩衬砌摩擦滑动接触的新解法 1)
尹崇林,吕爱钟

A NEW SOLUTION FOR FRICTIONAL SLIP CONTACT BETWEEN SURROUNDING ROCK AND LINING IN A HYDRAULIC CIRCULAR TUNNEL 1)
Yin Chonglin,Lü Aizhong
表 4 改变衬砌厚度$R_1 - R_0 $ 时不同侧压力系数$\lambda $所确定的阈值$f_r^t $
Table 4 Values of $f_r^t $ for various $R_1 - R_0 $ and $\lambda $