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

Figure 27

Group wells subsidence nephogram after the second drawdown (unit: m). (a) Three-dimensional diagram. (b) Cross section of the well midpoint. (c) Longitudinal section of the well midpoint.

(a)

(b)

(c)