Research Article
The Study of Subsurface Land Drainage Optimal Design Model
Table 6
Pipe drainage optimal solution for a range of lifespan.
| | Lifespan D (years) | Pipe spacing E (m) | Hydraulic head H (m) | Total cost Z (RMB) |
| | 1 | 234.4577 | 1.3189 | 8.5823e + 06 | | 10 | 234.8422 | 1.3211 | 1.1711e + 07 | | 50 | 235.0565 | 1.3223 | 1.4698e + 07 | | 100 | 235.0644 | 1.3223 | 1.4840e + 07 |
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