采矿废石—尾砂混合骨料在下向分层进路胶结充填采矿中应用的试验研究

何建元,李宏业,高谦,尹升华

Experimental Research on Application of Mixed Aggregate of Mining Waste Rock and Tailings in Downward Layered Approach and Cemented Filling Mining Method HE Jianyuan¹，LI Hongye¹，GAO Qian²，YIN Shenghua²

表3 金川矿山废石粗骨料和选矿尾砂粒径级配分布特征参数

Table 3 Distribution parameters of particle size gradation of waste rock aggregate and tailings in Jinchuan mine

骨料	尾砂特征粒径/mm		不均匀系数C_u	曲率系数C_c	粒度特性曲线
选厂尾砂	d₉₀	0.1566	22.67	0.368	$y = 100 {(\frac{x}{0.2})}^{0.43126}$
	d₆₀	0.0612
	d₅₀	0.0400
	$d_{30}$	0.0078
	d₁₀	0.0027
	d_av	0.0630
废石骨料	d₉₀	13.501	17.96	3.808	$y = 100 {(\frac{x}{0.2})}^{0.43126}$
	d₆₀	7.023
	d₅₀	5.235
	$d_{30}$	3.233
	d₁₀	0.391
	d_av	5.803