某铁矿冻结孔的缓凝水泥浆固管充填技术  

Study on the Filling Technology of Freezing Hole Using Retarding Cement Grout in an Iron Mine

作　　者：王衍森[1,2] 杨福军[3] 冷阳光[1,2] 

机构地区：[1]深部岩土力学与地下工程国家重点实验室 [2]中国矿业大学力学与建筑工程学院 [3]河北钢铁集团矿业有限公司

出　　处：《金属矿山》2012年第11期40-42,45,共4页Metal Mine

基　　金：教育部新世纪优秀人才支持计划项目(编号:NCET-10-0771);中央高校基本科研业务费专项(编号:2011jqp03)

摘　　要：近年来,冻结法凿井技术在我国富水岩层矿井建设中的应用越来越广泛。为防止冻结壁融化后冻结孔成为竖向导水通道,威胁矿井的安全,冻结孔必须开展固管充填处理。针对某铁矿回风井冻结法凿井面临的地层条件及钻孔泥浆特点,通过室内及现场试验研究,获得了具有良好稳定性、较长缓凝时间且能与钻孔化学泥浆相容的缓凝水泥浆液配方,并研究制订了合理的冻结孔固管充填施工技术与工艺。冻结孔固管充填技术在该矿井的成功应用,证实了所研发的缓凝水泥浆液配方及相关施工技术与工艺的可行性与可靠性。In recent years,freezing sinking technology is widely used in water-beating rock strata in our country. To prevent the freezing hole becoming vertical water channels after the ice wall thawing, consequently threatening the safety of the mine, the hollow space around freezing pipes in freezing holes must be filled. Aiming at the strata condition and drilling mud features in freeze sinking in the ventilation shaft of an iron mine, the retarding cement grout formula, which is stable and has long slow setting time and considerable compatibility with drilling mud, was obtained through a large number of la- boratory and field tests; then,the reasonable technology and process were produced for the freezing holes filling. The suc- cessful application of this technology in the iron mine, proved its feasibility and reliability of the formula and the related process.

关 键 词：冻结法凿井 冻结孔 缓凝水泥浆液 固管充填 

分 类 号：TD853.34[矿业工程—金属矿开采]