建井技术
建井技術
건정기술
2014年
2期
42-44
,共3页
全深冻结%缓凝水泥浆%封堵%环形空间%竖向导水通道
全深凍結%緩凝水泥漿%封堵%環形空間%豎嚮導水通道
전심동결%완응수니장%봉도%배형공간%수향도수통도
full depth freezing%retarded cement grout%seal%annular space%vertical water flow channel
针对全深冻结法施工中的冻结管与冻结孔之间的环形空间封堵问题，研发了一种缓凝水泥浆材料。通过研究缓凝剂对水泥浆凝结时间的影响规律，确定了缓凝剂的合理掺量。通过在缓凝水泥浆中掺加钠基膨润土和悬浮剂来控制缓凝水泥浆的沉淀性能，配制成了缓凝效果好、密度均匀、后期强度高的缓凝水泥浆材料，满足了现场施工对缓凝水泥浆性能的要求。该缓凝水泥浆材料应用于大海则煤矿立井冻结项目，效果良好。
針對全深凍結法施工中的凍結管與凍結孔之間的環形空間封堵問題，研髮瞭一種緩凝水泥漿材料。通過研究緩凝劑對水泥漿凝結時間的影響規律，確定瞭緩凝劑的閤理摻量。通過在緩凝水泥漿中摻加鈉基膨潤土和懸浮劑來控製緩凝水泥漿的沉澱性能，配製成瞭緩凝效果好、密度均勻、後期彊度高的緩凝水泥漿材料，滿足瞭現場施工對緩凝水泥漿性能的要求。該緩凝水泥漿材料應用于大海則煤礦立井凍結項目，效果良好。
침대전심동결법시공중적동결관여동결공지간적배형공간봉도문제，연발료일충완응수니장재료。통과연구완응제대수니장응결시간적영향규률，학정료완응제적합리참량。통과재완응수니장중참가납기팽윤토화현부제래공제완응수니장적침정성능，배제성료완응효과호、밀도균균、후기강도고적완응수니장재료，만족료현장시공대완응수니장성능적요구。해완응수니장재료응용우대해칙매광립정동결항목，효과량호。
In a full depth freezing construction method ,there would be a sealing problem of the annular space between the freezing pipes and freezing borehole and a retarded cement grout material was deve-loped .With the study on the cement retarder affected to the cement grout setting time ,a rational mi-xing ratio of the cement retarder was determined .The sodium bentonite and suspension agent mixed in the retarded cement grout could control the settling performances of the retarded cement grout and could be a retarded cement grout material with a good retarded effect ,homogeneous density and high later strength to meet the requirements of the retarded cement grout performances at the site construc-tion .The retarded cement grout was applied to the mine freezing shaft sinking project of Dahaize Mine with an excellent effect.
