(長沙礦山研究院， 長沙 410012)
摘 要: 為解決碎石膠結(jié)充填料制備工藝復(fù)雜與輸送難度大等主要技術(shù)難題，研究了碎石水泥漿自淋混合新技術(shù)；同時研究了碎石水泥漿膠結(jié)充填料的最佳用水量，以及水泥用量和摻砂量對碎石膠結(jié)充填體強度的影響。 研究結(jié)果表明最佳用水量與水泥用量和碎石的吸水能力成正比關(guān)系； 當水泥單耗為50～100 kg/m3時， 充填體單軸抗壓強度與水泥用量呈線性相關(guān)；當碎石中＜5 mm的細顆粒含量達23%時，摻砂后充填體的強度增幅不到5%。
關(guān)鍵字: 關(guān)鍵詞: 膠結(jié)充填 充填料 混合 配合 充填體強度
（Changsha Institute of Mining Research, Changsha 410012, P. R. China）
Abstract:The cemented waste rock fill involves complicated and troublesome operations for the preparation and transportation of filling materials. In order to solve these problems, an innovative technology was developed to mix the crushed waste rocks with cement slurry by way of gravity flowing. Meanwhile, the optimal water consumption for cemented waste rock fill, and the effects of cement consumption and fine sand or tailings addition on the strength of waste rock fillbody were studied. It has been shown that the optimal water consumption is directly proportional to the absorbing capacity of crushed waste rocks; at 50～100 kg/m3 cement consumption, the correlation of uniaxial compressive strength of fillbody with cement consumption shows linear; at 23% particles( <5 mm) containing in crushed waste rocks, the increase in fillbody strength after adding sand is less than 5%.
Key words: cemented filling filling materials mixing batching fillmass strength
