(长沙矿山研究院， 长沙 410012)
摘 要: 为解决碎石胶结充填料制备工艺复杂与输送难度大等主要技术难题，研究了碎石水泥浆自淋混合新技术；同时研究了碎石水泥浆胶结充填料的最佳用水量，以及水泥用量和掺砂量对碎石胶结充填体强度的影响。 研究结果表明最佳用水量与水泥用量和碎石的吸水能力成正比关系； 当水泥单耗为50～100 kg/m3时， 充填体单轴抗压强度与水泥用量呈线性相关；当碎石中＜5 mm的细颗粒含量达23%时，掺砂后充填体的强度增幅不到5%。
关键字: 关键词: 胶结充填 充填料 混合 配合 充填体强度
（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
