Research Article
Effect of Coal Mining on Springs in the Yushenfu Mining Area of China
Table 4
Statistics of springs’ evolution in different mine fields.
| | Mine field | Coal mining intensity level | Quantity of springs before coal mining | Quantity of springs after coal mining | Attenuation ratio of quantity (%) | Spring flow before coal mining (L/s) | Spring flow after coal mining (L/s) | Attenuation ratio of spring flow (%) |
| | Yujialiang mine field | Highest | 11 | 4 | 63.6 | 25.186 | 3.226 | 87.1 | | Zhangjiamao mine field | High | 145 | 39 | 73.1 | 77.46 | 26.3103 | 66 | | Dabaodang mine field | Low | 8 | 8 | 0 | 656.301 | 145.63 | 77.8 |
|
|
