[1]李凤义,陈维新,刘世明,等.粉煤灰基胶结充填材料试验研究[J].西安科技大学学报,2015,(04):473-479.
 LI Feng-yi,CHEN Wei-xin,LIU Shi-ming,et al.Experimental research on fly-ash-based cement filling material[J].Journal of Xi'an University of Science and Technology,2015,(04):473-479.
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粉煤灰基胶结充填材料试验研究(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2015年04期
页码:
473-479
栏目:
出版日期:
2015-08-30

文章信息/Info

Title:
Experimental research on fly-ash-based cement filling material
文章编号:
10.13800/j.cnki.xakjdxxb.2015.0412
作者:
李凤义陈维新刘世明
黑龙江科技大学 矿业研究院,黑龙江 哈尔滨 150022
Author(s):
LI Feng-yiCHEN Wei-xinLIU Shi-mingGUAN Xian-hua
Mining Research Institute,Heilongjiang University of Science and Technology,Harbin 150022,China
关键词:
充填材料 粉煤灰 活化剂
Keywords:
filling material fly ash activator
分类号:
TD 823
文献标志码:
A
摘要:
针对目前性能优良的矿用胶结充填材料价格较高的问题,通过试验室正交实验的方法得到粉煤灰未经活化的最佳组分配比,而后通过对比实验找到1种粉煤灰活化剂,这种活化剂与粉煤灰、水搅拌陈放4~8 h后,能有效激发组分配方中粉煤灰的早期活性,活化后粉煤灰掺入组分配比后得到水灰比接近1:1,粉煤灰占充填材料固体质量80%以上,8 h抗压强度大于0.8 MPa,1 d抗压强度大于3 MPa,3 d抗压强度大于4 MPa,初凝时间在90~120 min之间的材料配方。结果表明:材料8 h即形成大量针状钙矾石,3 d时产生C-H-S(水化硅酸钙)凝胶,7 d后钙矾石已被胶凝包裹。最后,按配方比例在桃山矿井下采空区进行充填工业试验,该材料虽掺入大量粉煤灰但仍能适应井下环境,具有快凝、早强、接顶率高等特点。
Abstract:
Aimed at the high price of better cementing filling material in the mine,the paper got the best ratio of fly-ash without activation by orthogonal experiment,then found a activator for fly-ash by comparative experiment,which mixed with fly-ash and water after 4 hours to 8 hours can excite the early activity of fly ash efficiently.When the activited fly ash would be mixed component Formulation,the optimum formula was obtained that the water-solid ratio approached to 1 and fly ash accounted for over 80% of solid mass in filling material; the compressive strength was more than 0.8 MPa after 8 h,more than 3 MPa after 1 d,and more than 4 MPa after 3 d; initial setting time is about 90 min to 120 min.Micro-analysis results showed that the materials formed a lot of needle ettringite after 8 hours and produced C-H-S gelation(calcium silicate hydrate)after 3 d,ettringite was wrapped by gelling after 7 d.The scheme is tested by backfill mining in underground of Taoshan mine according to the ratio formula,which proves that the material with large amounts of fly ash can adapt the environment in underground mine with advantages of rapid solidification,early strength and high rate of supporting,which can satisfy the basic requirements of filling coal.

参考文献/References:

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相似文献/References:

[1]陈 杰,黄庆享,石 莹.矸石电厂粉煤灰的活化及环保应用[J].西安科技大学学报,2011,(06):842.
 CHEN Jie,HUANG Qing-xiang,SHI Ying.Activation and environmental application of fly ash from coal gangue-burning power plant[J].Journal of Xi'an University of Science and Technology,2011,(04):842.

备注/Memo

备注/Memo:
收稿日期:2015-04-10 责任编辑:刘 洁 基金项目:黑龙江省发展高新技术产业(非信息产业)专项资金支持项目(FW12A018) 通讯作者:李凤义(1963-),男,黑龙江鸡西人,教授,E-mail:kyyjylfy@163.com
更新日期/Last Update: 1900-01-01