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新奥法喷护混凝土的变形是伴随隧洞掘进后洞壁围岩变形而发展的,而喷混凝土的弹性模量也是随着喷混凝土龄期(历时)的增长而逐渐变大的。如果按隧洞的有限元解析方法确定喷混凝土的弹性模量及其随时间的变化,以
The deformation of the shotcrete of Xin’aofa was developed with the deformation of surrounding rock of tunnel wall after tunneling. The elastic modulus of shotcrete also increased with the age of sprayed concrete. If according to the tunnel finite element analysis method to determine the elastic modulus of shotcrete and its changes over time to