Table 2: Weight of each subsystem’s parameters.

Collecting system Transporting system Distributing system
Market share of Daqin Railway’s coal transportation Loading spots 10,000-ton loading spots 20,000-ton loading spots 10,000-ton freight train per day 20,000-ton freight train per day Train density Daily average volume Max daily volume Unloading spots Use ratio of port Use ratio of unloading station

0.17280.29550.30810.22360.19560.20520.19560.19840.20520.29250.33960.3679