Analysis of Factors Influencing the Flow Characteristics of Paste Backfill in Pipeline Transportation

The continuous accumulation of tailings in reservoirs not only causes environmental pollution but may also cause geological disasters. paste-filling mining method is an effective way to address the tailings, and it necessary study flow characteristics pipeline transportation process—a core process this method. However, limited by factors such as test conditions, equipment, cost, research field mainly focuses on performance conveying materials influence single conditions resistance filling pipelines. paste a systematic project, its are determined slurry itself related geometric pipeline. In study, orthogonal numerical simulation were used five parameters—i.e., gradient, curvature radius elbow, inner diameter pipeline, rate, concentration—on characteristics, they sorted according their levels influence. results show that, during process, concentration has greatest loss maximum wall shear stress rate at elbow. compared analyzed using rheological theory. difference was 11%, average 6%. Numerical indicate that pipe near outer side inlet section center elbow wears easily paste-conveying process. enrich theory transportation, improve understanding various parameters provide reference for design.