欢迎访问《现代矿业》杂志官方网站,今天是 分享到:

现代矿业 ›› 2014, Vol. 30 ›› Issue (09): 179-182.

• 材料·装备 • 上一篇    下一篇

帷幕注浆防渗材料的试验研究

王志奇   

  1. 华北有色工程勘察院有限公司
  • 出版日期:2014-09-15 发布日期:2016-10-11

Experimental Study on the Seepage Control Materials of Curtain Grouting

Wang Zhiqi   

  1. North China Engineering Investigation Institute Co.,Ltd.
  • Online:2014-09-15 Published:2016-10-11

摘要: 针对帷幕注浆工程的防渗要求,研究适配膨润土-粉煤灰-水泥防渗浆材,通过正交试验优选出了固体配方:水泥20%~22%、膨润土33%~35%、粉煤灰20%~22%、纯碱1.6%~1.7%。试验结果表明:该防渗材料配方具有良好的可灌性和稳定性,可泵期为32~55 min,固结体28 d渗透系数小于2.0×10-7 cm/s,无侧限抗压强度1.6~1.9 MPa,完全满足了堵水防渗要求,为帷幕注浆防渗工程提供了科学合理的材料配比。

关键词: 渗透系数, 抗压强度, 帷幕注浆, 注浆材料

Abstract: According to the seepage control requirements of curtain grouting engineering, the seepage control materials of bentonite-fly ash-cement is researched. The optimal formula of the seepage control materials is obtained by conducting the orthogonal test. The test results show that,groutability and stability of the seepage control materials are good, the pumpable time from 32 minutes to 55 minutes, the permeability coefficient of induration in 28 days is less than 2.0×10-7cm/s, the unconfined comprehensive strength is from 1.6 MPa to 1.9 MPa. The above research results can meet the requirement of water seepage control of curtain grouting completely and provide a scientific and reasonable ratio of seepage control materials of curtain grouting.

Key words: Permeability coefficient, Comprehensive strength, Curtain grouting, Grouting materials