| 1 | A while later, it went into a hole of a ditch. | |
| 2 | The method of hydrodynamic computation for seepage ditches and wells were expanded and updated. | |
| 3 | With decompress well and drainage ditch to drain and decompress can effectively reduce groundwater level and prevent immersion outside reservoir. | |
| 4 | Horizontal and vertical infiltration velocity were increased by wetted perimeter increasing, but water depth in the furrow can't effect infiltration. |