Recharging technique for settlement control of adjacent buildings under dewatering of deep foundation pit in floodplain area of the Yangtze River

In groundwater-rich area, large-scale dewatering of deep foundation pit may result in water level lowering outside the foundation pit, cause ground surface settlement and affect the existing buildings. Combined with the construction cases and aimed at the extra-deep and extra-large foundation pit along the Yangtze River, this paper calculated the groundwater level and settlement around the foundation pit with an established model, adopted recharging technique for settlement control of adjacent buildings under long-term dewatering, and monitored their settlements by setting measuring points around the buildings. And based on the comparison of measured and theoretical results, it can be seen that the adopted recharging technique can effectively reduce the adjacent building settlement. ©, 2015, Editorial Office of Modern Tunnelling Technology". All right reserved."