The Effect of Hydraulic Coupling on Mechanical Deformation Characteristics of Shallow Coal Seam in Western Mining Area

Table 2

Material ratio of physical similarity model.

Lithology	Cumulative thickness (cm)	Sand (kg)	Lime (kg)	Plaster (kg)	Water (kg)
Aeolian sand	120.0	9.9	1.9	0.5	0.9
Siltstone	105.5	1.9	0.4	0.4	0.2
Fine-grained sandstone	105.0	11.6	3.8	3.9	1.4
Coarse-grained sandstone	94.5	6.6	0.9	0.7	0.6
Sandy mudstone	93.0	10.3	2.2	2.2	1.1
Medium-grained sandstone	85.0	11.6	2.4	2.5	1.2
Coarse-grained sandstone	82.0	4.4	0.6	0.4	0.4
Sandy mudstone	81.0	11.9	2.5	2.5	1.2
Fine-grained sandstone	62.5	8.3	2.7	2.7	0.9
Coarse-grained sandstone	60.0	13.2	1.9	1.3	1.2
Coarse-grained sandstone	57.0	9.5	3.1	3.2	1.19
Medium-grained sandstone	45.5	3.9	0.8	0.8	0.4
Sandy mudstone	44.5	5.8	1.2	1.2	0.6
Coarse-grained sandstone	43.0	9.9	1.4	0.9	0.9
Sandy mudstone	38.5	10.6	2.2	2.3	1.1
Fine-grained sandstone	27.5	7.7	2.5	2.6	0.9
Sandy mudstone	20.5	5.8	1.2	1.2	0.6
Siltstone	19.0	11.6	3.8	3.9	1.4
Sandy mudstone	15.5	3.9	0.8	0.8	0.4
Fine-grained sandstone	14.5	6.6	2.2	2.2	0.8
Mudstone	10.5	4.4	0.6	0.4	0.4
Coal 1-2	9.0	9.9	1.7	0.7	0.9
Mudstone	5.0	8.3	2.7	2.8	0.9