尾砂粒级组成对胶结充填料流变特性与强度的影响

盛宇航,裴佃飞,齐兆军,荆晓东

Influence of Particle Size Composition of Tailings on Rheological Characteristics and Strength of Cemented Tailings Backfill

Yuhang SHENG,Dianfei PEI,Zhaojun QI,Xiaodong JING

表3 不同粒级尾砂充填料浆水化膜厚度

Table 3 Water film thickness of cemented tailings backfill with different particle size of tailings

尾砂编号 浓度/% 堆积密度 空隙率 水化膜厚度/μm 初始屈服应力/Pa 初始塑性黏度/（Pa·s） W1 74 0.553 0.808 0.053 197.48 1.918 W2 74 0.587 0.704 0.106 125.33 1.157 W3 74 0.604 0.656 0.141 77.08 0.566 W4 74 0.598 0.672 0.145 54.72 0.433 W5 74 0.568 0.761 0.121 17.63 0.385 W1 72 0.553 0.808 0.093 136.46 1.664 W2 72 0.587 0.704 0.151 72.55 0.594 W3 72 0.604 0.656 0.189 50.17 0.335 W4 72 0.598 0.672 0.197 32.57 0.249 W5 72 0.568 0.761 0.184 12.39 0.263 W1 70 0.553 0.808 0.136 92.41 0.853 W2 70 0.587 0.704 0.197 45.45 0.289 W3 70 0.604 0.656 0.239 31.13 0.171 W4 70 0.598 0.672 0.252 18.16 0.134 W5 70 0.568 0.761 0.250 7.31 0.126