Ground Pressure under Mining Ore Bodies of Different Angles Based on Physical Simulation

Table 2

Material consumption of model five-nine exploration line of the north mining area of the second pithead of Jinning Phosphate Mine.

Serial number	Lithology	(kg)	(kg)	(kg)	(kg)	(g)
1	Quaternary sandy clay cover	210.09	24.51	10.50	24.51	245.10
2	Light gray, gray-white, and medium thick layered hidden to mesocrystalline dolomite	3.51	0.12	1.05	0.47	4.68
3	Off-white, gray medium to coarse crystal dolomite	65.43	2.18	19.63	8.72	87.24
4	Light gray, gray layered hidden to mesocrystalline dolomite	34.97	1.17	10.49	4.66	46.62
5	Muddy dark gray hidden to mesocrystalline dolomite	483.43	23.20	170.17	67.68	676.80
6	Layered muddy dolomite	185.02	22.80	43.28	25.11	251.10
7	Gravel quartz sandstone	165.65	5.52	49.69	22.09	220.86
8	Grades I, II mixed mining phosphate rock	72.34	3.62	26.52	10.25	102.48
9	The first layer III grade phosphate rock layer	48.75	2.03	18.28	6.91	69.06
10	Grade II product mining phosphate rock	32.61	1.36	12.23	4.62	46.20
11	The second layer III grade phosphate rock layer	37.78	1.57	14.17	5.35	53.52
12	Off-white thin to medium thick layered dolomite	264.28	11.01	99.11	37.44	374.40
13	Off-white thin to medium thick layered cryptocrystalline to fine-grained dolomite	801.43	48.09	272.49	112.20	1122.00
Remarks	Topsoil cover plus plastic is 2.35 kg, soft glue is 0.88 kg, motor oil is 0.48 kg, and wood chips are 0.68 kg.