Study on Catastrophe Information Characteristics of Water Inrush in Karst Tunnel by Drilling and Blasting Method

Figure 12

Evolution characteristics of seepage pressure under different tunnel depths. (a) t = 1 s, h = 200 m. (b) t = 1 s, h = 500 m. (c) t = 1 s, h = 800 m. (d) t = 3 s, h = 200 m. (e) t = 3 s, h = 500 m. (f) t = 3 s, h = 800 m. (g) t = 5 s, h = 200 m. (h) t = 5 s, h = 500 m. (i) t = 5 s, h = 800 m. (j) t = 7 s, h = 200 m. (k) t = 7 s, h = 500 m. (l) t = 7 s, h = 800 m.

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