Research Article
A Novel Method for Evaluating Dredging Productivity Using a Data Envelopment Analysis-Based Technique
Table 11
Daily dredging productivity of Cao Gongzhao II by the proposed method.
| Work day | Input | Output | Daily dredging productivity | Hydraulic excavator (SL-330) | Hydraulic excavator (320B) | Daily trucks | Daily dredging (M3) | 1 input result | 3 input result |
| 1 | 3 | 10 | 13 | 320 | 0.003 | 0.015 | 2 | 3 | 10 | 9 | 6012 | 0.059 | 0.275 | 3 | 2 | 13 | 10 | 6210 | 0.067 | 0.257 | 4 | 2 | 13 | 8 | 8033 | 0.094 | 0.332 | 5 | 2 | 14 | 8 | 8217 | 0.093 | 0.320 | 6 | 3 | 14 | 7 | 8210 | 0.077 | 0.294 | 7 | 3 | 15 | 6 | 8858 | 0.083 | 0.301 | 8 | 3 | 14 | 7 | 10423 | 0.097 | 0.373 | 9 | 3 | 14 | 7 | 10713 | 0.100 | 0.383 | 10 | 3 | 14 | 7 | 10785 | 0.101 | 0.386 | 11 | 3 | 14 | 7 | 10634 | 0.099 | 0.381 | 12 | 3 | 14 | 7 | 10220 | 0.095 | 0.366 | 13 | 3 | 14 | 7 | 12031 | 0.112 | 0.431 | 14 | 3 | 14 | 7 | 12523 | 0.117 | 0.448 | 15 | 3 | 14 | 8 | 12666 | 0.114 | 0.453 | 16 | 3 | 14 | 8 | 12804 | 0.115 | 0.458 | 17 | 3 | 14 | 9 | 14181 | 0.124 | 0.507 | 18 | 3 | 16 | 11 | 8091 | 0.063 | 0.261 | 19 | 3 | 15 | 9 | 14518 | 0.123 | 0.493 | 20 | 3 | 15 | 8 | 14312 | 0.126 | 0.486 | 21 | 3 | 14 | 8 | 15270 | 0.138 | 0.546 | 22 | 3 | 13 | 8 | 15373 | 0.142 | 0.582 | 23 | 3 | 13 | 8 | 15413 | 0.143 | 0.583 | 24 | 3 | 14 | 9 | 16211 | 0.141 | 0.580 | 25 | 3 | 15 | 7 | 16503 | 0.150 | 0.560 | 26 | 3 | 14 | 7 | 16366 | 0.153 | 0.586 | 27 | 2 | 13 | 8 | 17005 | 0.199 | 0.704 | 28 | 2 | 13 | 7 | 17832 | 0.219 | 0.738 | 29 | 2 | 13 | 4 | 16527 | 0.235 | 0.684 | 30 | 2 | 13 | 7 | 16583 | 0.203 | 0.686 | 31 | 2 | 13 | 6 | 15589 | 0.200 | 0.645 | 32 | 2 | 13 | 6 | 15056 | 0.194 | 0.623 | 33 | 1 | 12 | 3 | 15037 | 0.369 | 0.940 | 34 | 1 | 11 | 4 | 16142 | 0.389 | 1.000 | 35 | 1 | 9 | 2 | 15861 | 0.568 | 1.000 | 36 | 1 | 7 | 1 | 4916 | 0.271 | 0.470 | 37 | 1 | 5 | 3 | 5057 | 0.258 | 1.000 | 38 | 1 | 1 | 2 | 3775 | 1.000 | 1.000 |
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