Inclinometer analysis of tunnelling induced ground movement at Liverpool Street Station

In total 22 inclinometers are established in the vicinity of LIV station tunnels, 10 of which are manually read and 12 are automated. Due to instruments location and quality of the data the analysis contains only eight manual inclinometers listed in Table 1 and the location is shown in Figure 1.

The Manual instruments type used is Slope Indicator, and includes the casing, probe, control cable and the readout. Inside the probe are two tilt sensors one plane parallel to the wheel and the other plane perpendicular to the wheel. The casing is installed within one set of groove aligned with the expected direction of the movements (towards the excavation).