Prediction of Ground Subsidence Induced by the Shielded Subway Construction in Xi'an

Abstract

Abstract: The South Gate Wall segment of the second line of Xi'an Subway project is constructed with shielded tunneling method. The impact of the tunnel excavation on the ground surface subsidence is simulated with FLAC 3D model with various soil shear strength parameters, tunnel embedment depths as well as thickness of the Gate Wall. From the numerical analysis, the ground subsidence prediction formula is proposed. It is concluded that the proposed ground subsidence formula can reasonably reflect the values that observed during the construction.

Key words: shielded tunneling, ground subsidence, FLAC 3D, mohrcoulomb model

ZHANG Kai. Prediction of Ground Subsidence Induced by the Shielded Subway Construction in Xi'an[J]. , 2014, 28(1): 14-16.

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Prediction of Ground Subsidence Induced by the Shielded Subway Construction in Xi'an

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