Stability Analysis of Neighborhood Tunnels with Large Section Constructed in Steeply Jointed Rock Mass

Table 9

Result comparison of measured points.

Measured position, number	Numerical result (mm)	Measurement data (mm)	Relative error
Left roof, point A4	11.03	9.6	14.9%
Right roof, point A11	12.61	10.3	22.4%
Left wall, point B5	3.79	3.1	22.2%
Right wall, point B12	11.75	9.5	23.7%
Maxima of surface subsidence	10.07	9.41	6.5%

The position of points is shown in Figure 10.