Ground movement prediction for tunnels using simplified procedure

Stochastic medium theory is an effective method to predict tunneling-induced ground surface movement. However, the calculation formula of this theory is a complex double integral and the limit of integration is difficult to obtain when the cross section of tunnel is non-circular. In this paper, the stochastic medium theory is simplified, and the simplified procedure is proposed to predict the ground surface movement. In order to evaluate the validity of the simplified procedure, the numerical results using the stochastic medium theory are compared with those using the simplified procedure. The comparisons show that the present results by the simplified method agree well with the results by the stochastic medium theory except for very shallow tunnel, which means that the simplified method is an effective technique for predicting ground surface movement.

[1]  Junsheng Yang,et al.  MODELING OF TUNNELING-INDUCED GROUND SURFACE MOVEMENTS USING STOCHASTIC MEDIUM THEORY , 2004 .

[2]  C Sagaseta,et al.  ANALYSIS OF UNDRAINED SOIL DEFORMATION DUE TO GROUND LOSS , 1987 .

[3]  N. Morgenstern,et al.  Shear strength and stress-strain behaviour of Athabasca oil sand at elevated temperatures and pressures , 1987 .

[4]  R. Peck.  Deep excavations and tunnelling in soft ground , 1969 .

[5]  R. Baker,et al.  Nonlinear Mohr Envelopes Based on Triaxial Data , 2004 .

[6]  R. K. Rowe,et al.  AN ANALYSIS OF THREE-DIMENSIONAL GROUND MOVEMENTS: THE THUNDER BAY TUNNEL , 1991 .

[7]  J. Perry,et al.  A technique for defining non-linear shear strength envelopes, and their incorporation in a slope stability method of analysis , 1994, Quarterly Journal of Engineering Geology.

[8]  Liu Baochen,et al.  Stochastic Method For Ground Subsidence Due to Near Surface Excavation , 1995 .

[9]  Z Eisenstein,et al.  STRAIN FIELD AROUND A TUNNEL IN STIFF SOIL , 1981 .

[10]  J. R. Booker,et al.  Surface settlements due to deformation of a tunnel in an elastic half plane , 1996 .

[11]  Li Ning.  A predicting model for ground movement induced by non-uniform convergence of tunnel , 2007 .

[12]  John A. Hudson,et al.  Comprehensive rock engineering , 1993 .

[13]  A. S. Osman,et al.  Predicting 2D ground movements around tunnels in undrained clay , 2006 .

[14]  P. K. Kaiser,et al.  Determination of residual strength parameters of jointed rock masses using the GSI system , 2007 .

[15]  Hiroshi Morioka,et al.  Back-analysis of rock mass strength parameters using AE monitoring data , 2007 .

[16]  Harry G. Poulos,et al.  Analytical Prediction for Tunneling-Induced Ground Movements in Clays , 1998 .