(1. 長(zhǎng)沙礦山研究院有限責(zé)任公司，長(zhǎng)沙 410012；
2. 國(guó)家金屬采礦工程技術(shù)研究中心，長(zhǎng)沙 410012)
摘 要: 針對(duì)深部礦山充填系統(tǒng)中由于小充填倍線引起的豎直管段勢(shì)能高、易造成爆管事故增加的問(wèn)題，本文利用坍落度和環(huán)管試驗(yàn)研究低密改性劑、C料含量、料漿質(zhì)量濃度對(duì)全尾砂充填料漿輸送性能的影響，并在環(huán)管試驗(yàn)的基礎(chǔ)上，結(jié)合賓漢流體模型對(duì)不同工況的充填料漿流變參數(shù)進(jìn)行了計(jì)算。結(jié)果表明：低密改性劑的摻入、C料含量和料漿質(zhì)量濃度的增加都會(huì)使得料漿的擴(kuò)展度降低；與未改性的充填料漿相比，改性后料漿的屈服應(yīng)力增長(zhǎng)幅度在31.99%(68%)到20.67%(72%)之間，塑性黏度降低幅度約為23%；通過(guò)流體靜力學(xué)平衡理論和擴(kuò)展度與屈服應(yīng)力、塑性黏度間的回歸函數(shù)，建立了三山島金礦充填料漿沿程阻力經(jīng)驗(yàn)計(jì)算公式，該公式可用于現(xiàn)場(chǎng)快速、有效地預(yù)估料漿的輸送性能。
關(guān)鍵字: 全尾砂充填料漿；流變參數(shù)；環(huán)管試驗(yàn)；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
