Mathematical Problems in Engineering / 2019 / Article / Tab 6

Research Article

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

Table 6

Permeability rate and curve types obtained from the five pairs of the test holes.

Depth (m)Before or after groutingNumber of boreholes
12345

0–7Before53.97/D50.91/D65.61/D62.13/D53.78/B
After4.90/A5.12/A4.69/B4.67/B4.72/A
7–13Before47.12/D45.50/D42.00/D41.18/D46.21/C
After4.31/A4.26/B4.81/C5.18/D4.33/A
13–20Before34.42/C30.36/D36.16/D41.10/D36.19/A
After3.44/A3.69/A3.21/A3.96/B3.15/A

Note: the unit of the permeability rate is Lu.

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at help@hindawi.com to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.