煤矿安全2017，Vol.48Issue(7)：9-12,4.DOI:10.13347/j.cnki.mkaq.2017.07.003
瓦斯抽采钻孔注浆固结封孔过程中超高水膨胀浆液的可注性研究
Study on Groutability of Super High-aqueous Expansive Slurry During Hole Sealing Process of Gas Drainage Holes
摘要
Abstract
In China,the problems such as poor sealing quality and serious air leakage for gas drainage boreholes commonly exist in the coal seam and result in the low gas drainage concentration.This limits the development and utilization of coal seam gas.Thus,we propose a new method using a new type of ultra-high aqueous expansion slurry to grout and seal boreholes,and the experiment of condensation and fluidity test of ultra-high aqueous expansion slurry was carried out and the injection of ultra-high aqueous expansion slurry was evaluated.The results show that the setting time of ultra-high aqueous expansion slurry is significantly affected by the water cement ratio and it shows nonlinear growth with the increase of aqueous-cement ratio and can satisfy the time requirement of grouting.The funnel viscosity of ultra-high aqueous expansion slurry increases during the increase of aqueous-cement ratio and the stable slurry which has an aqueous-cement ratio more than 6:1 gets a good injection.关键词
采矿工程/瓦斯抽采钻孔/超高水膨胀浆液/可注性/固结封孔Key words
mining engineering/gas drainage borehole/ultra-high aqueous expansion material/groutability/consolidation sealing分类
矿业与冶金引用本文复制引用
胡国忠,蓝昌金,何文瑞,朱怡然..瓦斯抽采钻孔注浆固结封孔过程中超高水膨胀浆液的可注性研究[J].煤矿安全,2017,48(7):9-12,4.基金项目
江苏省基础研究计划(自然科学基金)资助项目(BK20141131) （自然科学基金）
江苏高校优势学科建设工程资助项目(SZBF2011-6-B35) （SZBF2011-6-B35）
