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MODERN TUNNELLING TECHNOLOGY 2014, Vol. 51 Issue (3) :188-192    DOI:
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Technology for the Treatment of Local Water Seepage of a Grout Curtain Adopted in a Deep Water-Rich Foundation Pit
(The Second Engineering Company, China Railway No.1 Engineering Group Co. Ltd., Tangshan 063004 )
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Abstract  Utilizing project experience, this paper analyzes the cause of local seepage of a "bored pile+twin-tube jet grouting pile" grout curtain under a high-pressure, water-rich sand formation in a floodplain area of the Songhuajiang River. Such measures as vertical ground grouting, oblique grouting consolidation between the piles, exploratory excavation, enclosure of steel plates, intensive mesh+shotcrete support, and rapid subsealing were carried out to overcome the difficulty related to local seepage of the grout curtain during excavation of the deep foundation pit, ensuring successful construction.
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LI Yi-Tang
Keywords�� Metro station   Water-rich deep foundation pit   Grouting curtain   Seepage treatment technology     
Abstract��  Utilizing project experience, this paper analyzes the cause of local seepage of a "bored pile+twin-tube jet grouting pile" grout curtain under a high-pressure, water-rich sand formation in a floodplain area of the Songhuajiang River. Such measures as vertical ground grouting, oblique grouting consolidation between the piles, exploratory excavation, enclosure of steel plates, intensive mesh+shotcrete support, and rapid subsealing were carried out to overcome the difficulty related to local seepage of the grout curtain during excavation of the deep foundation pit, ensuring successful construction.
Keywords�� Metro station,   Water-rich deep foundation pit,   Grouting curtain,   Seepage treatment technology     
published: 2013-08-02
Cite this article:   
LI Yi-Tang .Technology for the Treatment of Local Water Seepage of a Grout Curtain Adopted in a Deep Water-Rich Foundation Pit[J]  MODERN TUNNELLING TECHNOLOGY, 2014,V51(3): 188-192
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