Design of Groundwater Extraction in Open Cut Foundation Pit and Simplified Calculation of Ground Subsidence due to Dewatering in Sandy Pebble Soil Strata

Figure 34

Comparison of settlements at different distances from well axis under different drawdowns. (a) Grade I drawdown. (b) Grade II drawdown. (c) Grade III drawdown. (d) Grade IV drawdown (drawdown becomes stable).

(a)

(b)

(c)

(d)