Paste Pipeline Transportation of Pumping Backfill Technology with Long Distance and High Stowing Gradient in Cold and High-Altitude Areas

Table 6

The values of the slump and slump spread of the backfilling slurry.

Cement : binder : classified tailings	Mass fraction (%)	Degree of slump (cm)		Slump proliferation (cm)		Slump proliferation/degree of slump
		Actual measurement	Average	Actual measurement	Average
1 : 4 : 8	76	21.5	21.6	65.4	65.50	3.0
		21.7		65.6
		21.6		65.5
1 : 4 : 15	76	20.2	20.4	66.4	66.40	3.25
		20.4		66.5
		20.6		66.3