关键词: 胶结充填, 时温效应, 流变特性, 正交试验

Abstract: Cemented backfill is an economic and environmental protection mining technology. At present,the temperature effect on the rheological properties of the high concentration slurry cemented filling has a lack of research. This paper takes full tailings filling slurry of Miaoling Gold Mine as the study object and a series of rheological properties experiments were carried out by Rheolab Q C advanced rheometer to comprehensively study the influence of time temperature effect on the rheological properties of high concentration cemented filling slurry. The results show that the rheological characteristics of both fresh cemented slurry and dynamic slurry have obvious Bingham fluid characteristics,the yield stress and plastic viscosity of slurry increase with increasing time,while the plastic viscosity decreases with increasing temperature and the yield stress decreases first and then increases. The rheological properties of the static slurry don′t conform to the common rheological model theory,and the fluidity of the slurry decreases with the increase of the standing time. For the static slurry,the rheological properties are more affected by time factor than temperature. For the dynamic slurry,the rheological properties are more affected by temperature than time. The influence of slurry concentration on rheological properties is greater than that of cement-sand ratio for both dynamic and static slurry.