Table 2 Simulated result for the total water inflow of the whole tunnel using different forecasting methods
Tunnel section (m) | Stable water inflow (m3/h) | Maximum water inflow (m3/h) | |
|---|---|---|---|
Kostyakov method | Ochiai method | Qshima method | |
K0 ~ 115 | 4.3 | 4.5 | 4.6 |
K115 ~ 2000 | 71.5 | 85.2 | 90.3 |
K2000 ~ 2500 | 33.3 | 39.6 | 50.2 |
K2500 ~ 3316 | 41.8 | 51.1 | 59.5 |
K3316 ~ 4414 | 126.5 | 148.0 | 215.1 |
K4414 ~ 8265 | 345.5 | 424.2 | 566.7 |
K8265 ~ 12571 | 366.6 | 450.5 | 595.0 |
K12571 ~ 15152 | 210.6 | 255.0 | 337.0 |
K15152 ~ 16151 | 52.6 | 62.9 | 74.4 |
K16151 ~ 17290 | 56.7 | 66.0 | 77.2 |
Sum | 1309.4 | 1586.9 | 2070.2 |