Mathematical Problems in Engineering / 2019 / Article / Fig 12

Research Article

Evaluation of Ground Surface Pregrouting in a Mountain Tunnel Based on FAHP

Figure 12

Calculation of the four index memberships.

(a) Increase rate of sound velocity in single-borehole test
(b) Increase rate of sound velocity in double-borehole test
(c) Decrease rate of permeability rate
(d) Increase rate of the unconfined compressive strength

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