Table 6 Sedimentary sequence and material properties of coal seam no. 12.
From: Analytical prediction of groundwater loss in deep coal mines induced by ground vibration
Sedimentary sequence | Thickness (m) | Internal friction angle (°) | Bulk modulus (MPa) | Effective elastic modulus (GPa) |
|---|---|---|---|---|
Clay, Sand, Conglomerate, Gristone, and Coal | 235 | 20 | 1.3 | 12.5 |
