Abstract
With regard to the construction of the 3rd stage, No. 2 Haneda Tunnel for the Metropolitan Expressway Bay-Shore Route, the recharge well method was adopted to prevent the land subsidence caused by lowering of the ground water level due to pumping well. We could decrease the consolidation settlement of the ground within the allowable value by this method. This report deals with the plan, design, maintenance and effect of the recharge well method by monitoring ground water levels.
