基于流体力学理论的全尾砂浆管道输送流变性能

Rheological properties of full tailings slurry in pipeline transportation based on the hydromechanics theory

为研究充填料浆流变性能,利用流体力学原理,通过L型管道自流输送实验对其在管道中流动的力学特性进行了分析.结果表明:料浆浓度、流量和管径对料浆管输阻力和充填倍线大小的作用程度不同,其中料浆浓度影响尤为显著.在能够实现自流输送的充填倍线合理条件下,采场充填时,当结合充填能力确定流量和管径后,可通过充填站调节制浆浓度以使充填材料在管道输送、采场中沉降、抗离析、脱排水、固结硬化和力学性能等方面表现良好.

To study the rheological properties of filling slurry, using the principle of hydrodynamics, a gravity flow test through a L-shaped pipe was carried out and the mechanical properties of slurry flow in the pipe was analyzed. The results indicated that the flow resistance and filling rate were depended on slurry concentration, flow rate and pipe diameter, among which slurry concentration was the predominant influencing factor. Under the condition of reasonable filling rates at which the gravity flow of slurry can be achieved, after determining the flow rate and pipe diameter based on filling ability, the slurry concentration can be adjusted in the filling station to obtain excellent results in transportation, sedimentation, anti-eduction, dehydration and drainage, concretion and mechanical properties.