基于坍落度的充填膏体流变特性研究  

Research into rheological properties of backfill paste based on the slump test

作　　者：赵建会[1] 刘浪[1] 

机构地区：[1]西安科技大学能源学院,陕西西安710054

出　　处：《西安建筑科技大学学报（自然科学版）》2015年第2期192-198,共7页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51004014)

摘　　要：从膏体充填料浆坍落度的角度判别所制备充填膏体的流变特性,建立基于锥形坍落度和柱形坍落度的充填膏体流变参数模型,通过试验方式检验两种模型的坍落度与流变参数的相关性,并对比柱形坍落度与锥形坍落度试验的优越性.结果表明:柱形坍落度试验和模型更能准确测定高浓度充填膏体的流变参数;柱形坍落度模型在数学公式表现形式上,比锥形坍落度模型更为简单;柱形坍落筒的设计与制备比锥形坍落筒更为简单,取材更为方便;锥形坍落筒几何结构较柱形坍落筒更为复杂,试验过程中难于填料,并易于产生气泡,进而影响试验的准确性.From the point of slump test to distinguish the rheological properties of the paste backfill slurries, the rheological parameters model based on conical and cylinder slump test were established which is used to describe the relationship between slump and rheological parameters. And the superiority of two models were compared with slump test. The results showed that cylindrical slump test and the model are more accurate for describing the rheological parameters of the high-concentration paste backfill suspension. Compared to the form of the mathematical formulas, cylindrical slump model is simpler than conical slump model. The design and preparation of the cylindrical container is easier than the cone container. Because the geometry of the cone container is more complex than cylindrical container, it is more difficult to fill the paste, for a lot of bubbles formed during the filling which will definitely affect experimental results.

关 键 词：膏体充填 浆体 坍落度 屈服应力 

分 类 号：TD851[矿业工程—金属矿开采]