Research Article
Application of Hierarchical Facility Location-Routing Problem with Optimization of an Underground Logistic System: A Case Study in China
Table 4
Costs of two models (thousand RMB/day).
| | | 20 basic nodes | 30 basic nodes |
| | Models | | | | |
| | Node build cost | 61.6 | 452.0 | 90.4 | 63.0 |
| | Pipeline build cost | 2165.7 | 2020.4 | 2858.7 | 2705.3 |
| | Transport cost | 470.6 | 426.9 | 710.8 | 578.0 |
| | Transit cost | 34.7 | 28.9 | 56.0 | 42.1 |
| | Total cost | 2732.5 | 2546.2 | 3715.9 | 3388.4 |
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