Analysis of Mining Subsidence Characteristics and Deformation Prediction considering Size Parameters and Mechanical Parameters

Table 1

Rock mechanics parameters.

Name	Thickness/m	Density/kgm^-3	Modulus of elasticity/GPa	Tensile strength/MPa	Cohesion/MPa	Internal friction angle/°
Loose layer	866	1800	0.14	0.01	0.02	17
Mudstone	25.95	2430	5.6	3.8	4.1	29
Fine sandstone	6.25	2600	9.8	5.4	5.2	35
Siltstone	2.08	2750	11.4	3.5	3.6	32
Mudstone	13.90	2430	5.6	3.8	4.1	29
Fine sandstone	4.97	2600	9.8	5.4	5.2	35
Fine sandstone	15.54	2600	9.8	5.4	5.2	35
Coal	6.8	1400	1.16	1.1	1.25	25
Fine sandstone	3.15	2600	9.8	5.4	5.2	35
Mudstone	4.77	2430	5.6	3.8	4.1	29
Fine sandstone	10.59	2600	9.8	5.4	5.2	35