Calculation Method of Shotcrete Lining in Circular Tunnel in Elastic Medium of Rock Mass

This paper advocats to make monitoring measurement of displacement during constrction and determuine original rock stress insitu and consider the original rock stress and surrounding rock pressures as of general, non-homogeneous distributed condition, utilizing the theory of complex rariable function for shotcrete lining in a circular tunnel to find the solution. Figures are drawn for the surrounding rock pressure s and tangential stresses at the internal edge of shotcrete formaton. By simple calculation according to these figures, the mechanical analysis and strength check of shotcrete formation can be made conreniently. This paper gives a calculation example to illustrate the employ of these figures.