直排全尾胶结充填技术的研究与应用

Research and Application of the Cemented Backfilling Technology with Total Directly Discharged Tailings

直排全尾胶结充填技术克服了以往的干式充填和水式充填技术的缺点。介绍了金岭铁矿尾矿的粒级配比和制作充填料的配比、充填系统、充填工艺和充填能力。着重叙述了充填的安全管理和质量管理工作:利用钻孔泄水、水原排水、墙体管路等滤水措施,密闭挡墙的施工与管理等。4个月内完成了20万m3的空区充填工作,系统可靠,工艺安全。为回采残柱和矿柱提供了便利条件,减少了尾矿对环境的污染。

The cemented backfilling technology with total directly discharged tailings has eliminated the disadvantages in the previous dry backfilling and wet backfilling technologies. The paper presents the size composition of Jinling Iron Mine ＇ s tailings, the proportioning of the tailings used as backfill material and the backfilling system, process and capacity, and highlights the safety and quality management in the backfilling, where water filtering measures such as drill hole water drainage, water source drainage and wall piping were adopted and a closed retaining wall was built. The 0.2 million m^3 mined-out area was backfilled reliably and safely in four months. This technology can facilitate the recovery of residual pillars and ore pillars and reduce the tailings pollution to the environment.