Waste disposal field level | Slag pileV (Million cubic meters) | Slag height H (m) | The degree of harm caused by the waste disposal field accident to the main project or the environment |
1 | 2000 ≥ V ≥ 1000 | 200 ≥ H ≥ 150 | Serious |
2 | 1000 > V ≥ 500 | 150 > H ≥ 100 | More serious |
3 | 500 > V ≥ 100 | 100 > H ≥ 60 | Nothing serious |
4 | 100 > V ≥ 50 | 60 > H ≥ 20 | Lighter |
5 | V < 50 | H < 20 | Non-hazardous |