Analytical Solution of a Circular Opening considering Nonuniform Pressure and Its Engineering Application

Figure 5

Effect of lateral pressure coefficient on the surface displacement of surrounding rock. Parameter values: . (a) . (b) . (c) . is the radial displacement at the surface of tunnel. Note. As the displacement at the surface of surrounding rock is small, the result is scaled up by 1 : 400 to give a more intuitive illustration.

(a)

(b)

(c)