Experimental study of land subsidence in response to groundwater withdrawal and recharge in Changping District of Beijing.

ABSTRACT: Over exploitation of groundwater in Changping District of Beijing city has caused serious land subsidence in the past decades. In recent years, the operation of the South-to-North Water Transfer Project has reduced the land subsidence rate. In this paper, Experimental tests are performed using the GDS Consolidation Testing System to characterize the compression and rebound of soils at depths of less than 100 m caused by groundwater withdrawal and recharge in Changping District. The results indicate that the compressible layers are the main contributors to land subsidence. The first compressible layer experiences greater deformation and more considerable hysteresis than the other compressible layers with the same decrease in the pore water pressure. Therefore, the exploitation of the adjace

SUBMITTER: Cao Y 

PROVIDER: S-EPMC7209202 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature