Abstract
The dewatering of confined aquifer may cause ground settlement, cracking, deformation and tilting of the buildings, and even collapse. It is important and essential to protect environment during the dewatering of the foundation pit project, using the diaphragm wall. So this paper puts emphasis on the barrier effect of diaphragm wall with the data of four pumping tests at Hongzhuang station of Suzhou subway No.4 through the back analysis. The results indicate that (1) the hydraulic barrier corner effect caused by diaphragm wall is existent, and the drawdown of well located in corner of diaphragm wall is 2 times larger than the common; and (2) by calculating the results of comparative analysis, Forchheimer formula is most reasonable, and Kusargent formula is less rational, while Gehalt formula lies in the middle. It is our advice that Forchheimer formula is adaptive in confined water with diaphragm wall. The analyses above show that the hydraulic barrier effect of diaphragm wall has a greater impact on the g drawdown of a well, which can give a clue to similar projects.
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Lee, F.H., Yong, K.Y., Quan, K.C., Chee, K.T.: Effect of corners in strutted excavations: Field monitoring and case histories. J. Geotech. Geoenviron. Eng. 124(4), 339–349 (1998)
Li, X.: Fully coupling analysis of seepage and stress for deep foundation pit based on displacement back analysis. Chin. J. Rock Mechan. Eng. 23(8), 1269–1274 (2004). (in Chinese)
Liu, K.X.: Three dimensional analyses of deep excavation in soft clay. Ph.D. thesis, National University of Singapore, Singapore (1995)
Luo, Z.J., Zhang, Y.Y., Wu, Y.X.: Finite element numerical simulation of three-dimensional seepage control for deep foundation pit dewatering. J. Hydrodyn. Ser. B 20(5), 596–602 (2008)
Pujades, E., Carrera, J., Vázquez-Suñé, E., Jurado, A., Vilarrasa, V., Mascuñano-Salvador, E.: Hydraulic characterization of diaphragm walls for cut and cover tunnelling. Eng. Geol. 125, 1–10 (2012a)
Pujades, E., López, A., Carrera, J., Vázquez-Suñé, E., Jurado, A.: Barrier effect of underground structures on aquifers. Eng. Geol. 145–146(6), 41–49 (2012b)
Shen, S.L., Han, J., Du, Y.J.: Deep mixing induced property changes in surrounding sensitive marine clays. J. Geotech. Geoenviron. Eng. 134(6), 845–854 (2008)
Wang, J., Guo, T., Wu, L., Zhu, Y., Yiqun, T., Yang, P.: Mechanism and application of interaction between underground wall and well in dewatering for deep excavation. Chin. J. Undergr. Space Eng. 06(3), 564–570 (2010). (in Chinese)
Wang, J., Hu, L., Wu, L., Tang, Y., Zhu, Y., Ping, Y.: Hydraulic barrier function of the diaphragm wall in the pit of subway station and its optimization. Environ. Geol. 57(2), 447–453 (2009a)
Wang, J.H., Han, X., Zhou, H.L., Zhang, Z.M.: Analytical and semi-analytical methods for the seepage field dammed by underground structures. Hydrogeol. Eng. Geol. 36(2), 13–17 (2009b)
Wu, L.G.: Design and construction of dewatering engineering and theory of seepage in deep excavation. China Communication Press, China, pp. 24–26 (2003). (in Chinese)
Wu, Y.X., Shen, S.L., Xu, Y.S., Yin, Z.Y.: Characteristics of groundwater seepage with cut-off wall in gravel aquifer. I: Field observations. Can. Geotech. J. 52(10), 1526–1538 (2015a)
Wu, Y.X., Shen, S.L., Yin, Z.Y., Xu, Y.S.: Characteristics of groundwater seepage with cut-off wall in gravel aquifer. II: Numerical analysis. Can. Geotech. J. 52(10), 1539–1549 (2015b)
Xu, Y.S., Ma, L., Du, Y.J., Shen, S.L.: Analysis of urbanisation-induced land subsidence in Shanghai. Nat. Hazards 63(2), 1255–1267 (2012)
Zhang, J.: Study on technology and environmental effect of pressure-relief of confined water in Hangzhou deep pit. Doctoral dissertation, Zhejiang University. Ph.D. thesis, Zhejiang University, Hangzhou, China (2012)
Zhou, N., Vermeer, P.A., Lou, R., Tang, Y., Jiang, S.: Numerical simulation of deep foundation pit dewatering and optimization of controlling land subsidence. Eng. Geol. 114(3–4), 251–260 (2010)
Acknowledgments
Much of the research work described herein was funded by the National Natural Science Foundation of China (NSFC) (Grant No. 4157020433) and Project of the National Twelve-Five Year Research Program of China (Grant No. 2012BAJ01B02). These financial supports are gratefully acknowledged. The authors would like to express their appreciations to the editor and anonymous reviewer for their valuable comments and suggestions.
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Zhang, M., Tong, L. (2018). Characterization of Barrier Effect of Underground Wall in Pumping Tests. In: Chen, R., Zheng, G., Ou, C. (eds) Proceedings of the 2nd International Symposium on Asia Urban GeoEngineering. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-6632-0_12
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DOI: https://doi.org/10.1007/978-981-10-6632-0_12
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