期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：227
期号：5
页码：052028
DOI：10.1088/1755-1315/227/5/052028
出版社：IOP Publishing
摘要：Waste rock tailings cementation filling is a filling technique that effectively disposes waste rock and tailings in mines, saves energy, and reduces costs. This paper systematically studies the cementation and filling strength of waste rock tailings. The relationship between compressive strength, shear strength and content ratio of waste rock and tailing sand, cement-sand ratio, concentration parameters and the variation of strength were analyzed by orthogonal test. Sensitivity analysis of factors affecting strength of backfill is conducted using extreme range in data process. Then the order of sensitivity is obtained as content ratio of waste rock and tailing sand > cement-sand ratio > concentration, the relationship between factor and strength is established and the optimal mixing proportion of materials is found. It provides the basis for the filling process design.
