(1. 长沙矿山研究院有限责任公司，长沙 410012；
2. 国家金属采矿工程技术研究中心，长沙 410012)
摘 要: 针对深部矿山充填系统中由于小充填倍线引起的竖直管段势能高、易造成爆管事故增加的问题，本文利用坍落度和环管试验研究低密改性剂、C料含量、料浆质量浓度对全尾砂充填料浆输送性能的影响，并在环管试验的基础上，结合宾汉流体模型对不同工况的充填料浆流变参数进行了计算。结果表明：低密改性剂的掺入、C料含量和料浆质量浓度的增加都会使得料浆的扩展度降低；与未改性的充填料浆相比，改性后料浆的屈服应力增长幅度在31.99%(68%)到20.67%(72%)之间，塑性黏度降低幅度约为23%；通过流体静力学平衡理论和扩展度与屈服应力、塑性黏度间的回归函数，建立了三山岛金矿充填料浆沿程阻力经验计算公式，该公式可用于现场快速、有效地预估料浆的输送性能。
关键字: 全尾砂充填料浆；流变参数；环管试验；深井充填；沿程阻力
（1. Changsha Mine Research Institute Co., Ltd., Changsha 410012, China;
2. National Engineering Research Center for Metal Mining, Changsha 410012, China）
Abstract:Aiming at the problem of the high potential energy of the vertical pipe section caused by the small filling double line in the deep mine filling system, it is easy to cause the increase of tube explosion accidents. In this paper, slump and loop tests were used to study the influences of low-density modifier, C material content, and slurry mass concentration on the conveying performance of full tailings filler slurry. Based on the loop test, combined with the Bingham fluid model, the rheological parameters of the filling slurry under different working conditions were calculated. The results show that the incorporation of low-density modifiers, the increase of C material content and the mass concentration of the slurry will reduce the spread diameter of the slurry; compared with the unmodified filler slurry, the yield stress of the modified slurry increases from 31.99% (68%) to 20.67% (72%), and the plastic viscosity decreases about 23%. Combined with the hydrostatic equilibrium theory and the regression equations among the slump and yield stress, apparent viscosity, rheological index, the empirical calculation formula for the resistance along the way of the Sanshandao Gold Mine was established. The formula can be quickly and effectively used to estimated slurry transport performance in the field.
Key words: filling slurry with unclassed tailings; rheological parameters; loop test; deep well filling; resistance along the way
