- The sewer pipe here is broken and there is already too much accumulated water.
- Accumulated water of 12206 working face having been dug completely is menacing mining of 12208 working face.
- To dig this ditch cannot affect the water system of the village,instead,it will be benefit to drain off the accumulated water in the fields.
- When reclaiming earthworks, accumulated water shall be cleaned-up first. It is strictly forbidden to back fill earth with water.
- There is a correlation between accumulated water production rate and accumulated oil production rate, which is a linear relation on semilog coordinate.