Predicting the grouting effect on leakage-induced tunnels and ground response in saturated soils

An Analytical Model of Seepage Field for Symmetrical Underwater Tunnels

“…In addition, the analytical solutions of pore pressure at the perimeter of symmetrical tunnels are not equal to the assumed constant water pressure p 0 . This is the result that approximate solutions adopt when substituting the boundary conditions at the perimeter of symmetrical tunnels into Equation (10). However, the deviations are small and in an acceptable range, especially when the tunnel radius r 0 is small enough relative to the distance b and h. Figure 4f describes a comparison of pore pressure contours between analytical solutions and numerical solutions.…”

“…Considering the different boundary conditions at the tunnel perimeter, constant total hydraulic head and constant water pressure, Park et al [8] and Huangfu et al [9] derived analytical solutions of seepage field for steady water inflow into a drained circular tunnel in a semi-infinite aquifer. Zhang et al [10] investigated analytical solutions for tunnel leakage-induced ground and tunnel responses considering the grouting effect. Ying et al [11] derived a semi-analytical solution for groundwater ingress into lined tunnels using a conformal mapping technique.…”

Structural Response of the Metro Tunnel under Local Dynamic Water Environment in Loess Strata

“…According to the influence of water leakage at different parts of the tunnel on the surrounding soil and the parallel tunnel, the critical gap width of disaster caused by soil loss was proposed [33][34][35][36][37][38]. On the other hand, in view of the engineering properties of different rocks and soil under the influence of water, different analytical methods have been used to carry out research: in the clay stratum, the researchers used the homogeneous permeation theory to analyze the effect of long-term seepage of subway tunnel in soft soil area on tunnel and surface subsidence [39][40][41][42][43]; in karst tunnel, researchers carried out model experiments to reveal the catastrophic characteristics of water inrush in the filling karst pipeline and summarized the general characters of the water inrush structure of the rock tunnels [44][45][46][47][48]; in the loess stratum, the researchers through on-site monitoring, radar detection, numerical analysis, and other methods analyzed the damage to the segment structure of the subway water gushing and got the deformation characteristics of the segment structure in the process of water gushing and the distribution laws of the crack and the dislocation of the pipe [49][50][51][52][53][54][55].…”

Sequential Measurement and Analysis of Large Underground Retaining Structures by Diaphragm Wall Anchor for the Spring Area

“…Meanwhile, the supporting structures and adjacent facilities security are a challenge due to deep excavations construction. erefore, field monitoring of structure deformations and ground movements plays a vital role in excavation process [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Based on the reported field monitoring data, empirical and semiempirical methods have been identified as an appropriate approaches for the prediction of the excavation deformations [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38].…”