Research on filling body strength and rheological properties of mixed filling mortar with unclassified tailings and rod milling sand in Jinchuan mine

被引：0

作者：

Yang, Zhiqiang ^{[1
,2
]}

Gao, Qian ^{[1
]}

Wang, Yongqian ^{[2
]}

Chen, Dexin ^{[2
]}

Ba, Duoheng ^{[2
]}

机构：

[1] Key Laboratory of High Efficient Mining and Safety of Metal Mine, Ministry of Education, University of Science and Technology Beijing, Beijing,100083, China

[2] Jinchuan Group Co., Ltd., Jinchuang,Gansu,737100, China

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2014年 / 33卷

关键词：

Mortar - Mining engineering - Particle size - Rheology - Filling - Milling (machining) - Sand;

D O I：

10.13722/j.cnki.jrme.2014.s2.075

中图分类号：

学科分类号：

摘要：

The research on mixed filling materials including unclassified tailings and rod milling sand was conducted due to the serious lack of rod mill sand in Jinchuan mine. Based on the experiments of filling body strength and rheological properties for different ratios of mixed filling mortar with unclassified tailings-rod milling sand, revealed the relationship between filling body strength and the ratios, average particle size and uniformity coefficient and determined the reasonable ratio of Unclassified Tailings and Rod Milling sand was 3∶7 which apply to underhand drift cut-and-fill method in Jinchuan mine. The research shows that the compressive strength of 7 d and 28 d bleeding and sedimentation rate were precede rod milling sand's. This research achievement provided important technical support to industrialized application of unclassified tailings in Jinchuan mine and laid the foundation of the utilization of waste resources and environmental protection. ©, 2014, Academia Sinica. All right reserved.

引用

页码：3985 / 3991