Research Article
Research on Stability of an Open-Pit Mine Dump with Fiber Optic Monitoring
Table 1
Strength parameters of Dump II.
| | Lithology | Parameter | | State | Density (kg·m−3) | Cohesion (C/kPa) | Internal friction angle (°) |
| | Flint limestone | Natural | 2650 | 670.0 | 40.0 | | Green-purple sandy shale | Natural | 2600 | 620.0 | 32.0 | | Dark-purple mica shale | Natural | 2580 | 490.0 | 27.8 | | Gray fine quartz sandstone | Natural | 2680 | 760.0 | 40.2 | | Crystalline limestone | Natural | 2650 | 670.0 | 40.0 | | Egg-green marl | Natural | 2580 | 490.0 | 27.8 | | Quaternary residual slope deposit | Natural | 1800 | 8.0 | 30.0 | | Saturated | 1920 | 10.0 | 28.0 | | Dumping materials (slag discharged from the hanging side of the mine) | Natural | 2100 | 20.0 | 35.0 | | Saturated | 2250 | 45.0 | 30.0 | | Upper dumping materials (slag discharged from the heading side of the mine) | Natural | 2100 | 40.0 | 33.0 | | Saturated | 2250 | 45.0 | 30.0 | | Middle dumping materials (slag discharged from the heading side of the mine) | Natural | 2100 | 25.0 | 34.0 | | Saturated | 2250 | 50.0 | 31.0 | | Lower dumping materials (slag discharged from the heading side of the mine) | Natural | 2100 | 10.0 | 35.0 | | Saturated | 2250 | 20.0 | 32.0 | | Debris accumulation | Natural | 2100 | 80.0 | 20.0 | | Saturated | 2250 | 100.0 | 18.0 |
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