Problems needed to be noticed for artificial recharge in deep excavation for settlement control
Zeng Chaofeng1 Xue Xiuli1 Zheng Gang2
1. Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring,
Hunan University of Science and Technology, Xiangtan 411201, China; 2. Tianjin University, Tianjin 300072, China
Abstract：Artificial recharge is increasingly applied in deep excavation to minimize the dewatering-induced surrounding groundwater drawdown and ground settlements. However, if the recharge is not reasonably designed and conducted, the recharge may be not able to successfully restrict the dewatering-induced environment deformation. In this study, a case study of long-term recharge in deep excavation is reported. The development of groundwater level and building settlement outside the excavation are investigated based on long-term monitoring data. The mechanism of building settlement under the couple action of dewatering and recharge is clarified. On this basis, we summarize the problems needed to be noticed for artificial recharge in deep excavation for settlement control, and further propose a series of measures for engineers to help them better use recharge for settlement control.
