Table 1 Characteristic parameters of outburst coal and model material.
Material | Density (g/cm3) | Uniaxial compressive strength (MPa) | Elastic modulus (MPa) | f value | Adsorption constant | Initial speed of emission (Δp) | |
|---|---|---|---|---|---|---|---|
a (m3/t) | b (MPa−1) | ||||||
Outburst coal | 1.21–1.72 | 4.3–37.8 | 1135–4602 | 0.11–0.50 | 15–60 | 0.2–2 | 11–39 |
Model material | 1.21–1.72 | 0.43–3.78 | 113.5–460.2 | 0.11–0.50 | 15–60 | 0.2–2 | 11–39 |
