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Table 2 The adopted physical–mechanical parameters

From: Predicting the distribution of ground fissures and water-conducted fissures induced by coal mining: a case study

Strata Rock formation Elastic modulus (GPa) Poisson’s ratio Density (kN/\(\hbox {m}^{3}\)) Friction angle (\(^{\circ }\)) Cohesion (kPa)
O 17.80 0.12 2250 33 296.07
C C\(_{2}\)b 14.84 0.13 2350 28 262.23
C C\(_{3}\)t 14.10 0.14 2700 27 253.78
C Coal 0.35 0.24 2350 22 70.00
P P\(_{1}\)s 10.39 0.15 2650 26 203.02
P P\(_{1}\)x 9.71 0.15 2517 27 194.57
P P\(_{2}\)s 9.71 0.15 2517 27 194.57
N 3.11 0.17 2340 23 160.72
Q 0.05 0.26 1980 18 29.61