Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling Body

Table 4

Mix proportion of filling slurry.

Group	Test sample	SC (%)	AA	GS	Material consumption per unit volume (kg·m^−3)
					Coal gangue	Fine sand	Cement	Water
One	1	86	3.5 : 1	3 : 7	433.2	1010.9	412.6	302.2
	2	84			412.0	961.5	392.4	336.3
	3	82			392.0	914.6	373.3	368.7
Two	4	86		5 : 5	727.1	727.1	415.5	304.4
	5	84			691.2	691.2	395.0	338.5
	6	82			657.4	657.4	375.6	371.0
Three	7	86		7 : 3	1025.0	439.3	418.4	306.5
	8	84			974.3	417.5	397.6	340.8
	9	82			926.2	396.9	378.0	373.4