Mechanical Behavior of Loess Tunnels Caused by Surface Water Joints Infiltration

Figure 5

Seepage field after the 0th, 2nd, and 4th hours of contacting the impermeable layer by the wetting front in Case 2. (a) Hour 0 seepage field. (b) 2nd hour seepage field. (c) 4th hour seepage field.

(a)

(b)

(c)