| 方案 | 起始时段 | 表孔(m) | 底孔(m) | ||||
| 1# | 2# | 3# | 4# | 5# | |||
| x1 | 0 | 0 | 5 | 13 | 5 | 0 | 0 |
| x2 | 19 | 13 | 15 | 15 | 15 | 13 | 0 |
| x3 | 66 | 0 | 13 | 13 | 13 | 0 | 0 |
| x4 | 94 | 0 | 6 | 13 | 6 | 0 | 0 |