Research on Radius Influence of Foundation Pit Dewatering Considering the Effect of Waterproof Curtain

Abstract

The design scheme of the casing well dewatering of a deep foundation pit in Xi’an loess region has been conducted. Changes of water level of observational wells resulted from the waterproof curtain in the period of dewatering stable has been analyzed. The radius influence of waterproof curtain has been calculated and compared through formula and graphic methods according to experimental data. Similarity could be found from the results, which shows great difference comparing with the calculation results through traditional method. Consequently, experiencing formula has been revised and corrected according to the radius influence of waterproof curtain on casing well. After that, the newly modified formula has been exemplified in one pit engineering in Wuhan, which could provide the reference on the engineering dewatering design and construction based on the conditions with similar parameters.