Research Article
Bed Separation Characteristics of an LTCC Panel and Subsidence Controlling Grouting: Case Study of Longquan Coal Mine, China
Table 1
Physical and mechanical properties of the strata.
| | No. | Density (kg/m3) | Elastic modulus (GPa) | Poisson’s ratio | Tensile strength (MPa) | Cohesion (MPa) | Friction angle (°) | Lithology |
| | 1 | 2600 | 18.5 | 0.28 | 2.4 | 6.8 | 28.8 | Sandy mudstone | | 2 | 2480 | 22.0 | 0.27 | 4.5 | 8.6 | 17.4 | Siltstone | | 3 | 1370 | 1.65 | 0.32 | 1.2 | 1.9 | 28.2 | Coal seam | | 4 | 2460 | 8.75 | 0.28 | 0.6 | 1.4 | 30.0 | Mudstone | | 5 | 2530 | 16.5 | 0.30 | 2.2 | 4.2 | 18.5 | Carbon mudstone | | 6 | 2580 | 36.0 | 0.25 | 3.9 | 8.2 | 28.0 | Fine sandstone | | 7 | 2550 | 25.7 | 0.28 | 2.6 | 7.2 | 27.6 | Medium sandstone | | 8 | 2530 | 23.2 | 0.22 | 1.9 | 4.8 | 20.5 | Coarse sandstone |
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