Application and Research of Gangue Partial-Filling Mining Method in Preventing Water Inrush from Floor

Table 1

Physical and mechanical parameters of the strata used in the model.

Rock stratum		Thickness (cm)	Sand (kg)	Calcium carbonate (kg)	Gypsum (kg)	Vaseline (kg)	Paraffin (kg)	Water (kg)	Hydraulic oil (kg)	Actual strength (MPa)	Simulation strength (MPa)
Main roof	Limestone	0.45	20.79	2.376	0.594	0	0	2.376	0	62.7	0.209
	Sandy shale	3.5	13.376	1.0032	0.6688	0	0	1.5048	0	42.9	0.143
	Limestone	0.8	17.325	1.98	1.495	0	0	1.98	0	62.7	0.209
	Fine sandstone	2.5	12.474	0.891	0.891	0	0	1.4256	0	74.9	0.249
	Sandy shale	3.35	8.448	0.6336	0.4224	0	0	0.9504	0	42.9	0.143
Immediate roof	Limestone	0.85	14.08	1.056	0.4224	0	0	1.584	0	62.7	0.209
No. 9 coal seam		0.90	13.86	0.99	0.99	0	0	1.584	0	12.8	0.043
Water-resisting layer	Fine sandstone	4.3	8.1463	0.8689	0	0.3259	0.1629	0	0.9504	74.9	0.249
	Sandy shale	6.2	12.219	1.3034	0	0.4888	0.2444	0	1.4256	42.9	0.143
	No. 10-1 coal seam	0.6	13.86	0.99	0.99	0	0	1.584	0	12.8	0.043
	Clay shale	1.1	13.577	1.4482	0	0.5431	0.2715	0	1.584	32.7	0.109
	Sandy shale	2	10.862	1.1586	0	0.4345	0.2172	0	1.2762	42.9	0.143
	Fine sandstone	2.06	11.541	1.231	0	0.4616	0.2308	0	1.3464	74.9	0.249
	Clay shale	2.5	10.862	1.1586	0	0.4345	0.2172	0	1.6272	32.7	0.109
	Sandy shale	8.55	12.898	1.3758	0	0.5159	0.2580	0	1.5048	42.9	0.143
	Clay shale	3.15	10.183	1.0862	0	0.4073	0.2037	0	1.188	32.7	0.109
Aquifer	Sandstone	3.2	23.936	1.7952	1.0692	0	0	2.5344	0	69.8	0.233
	Limestone	4.1	28.413	1.7758	1.7758	0	0	3.2472	0	62.7	0.209