聚合物对水泥基封孔材料性能的影响  

Effects of polymer on performance of cement-based materials for sealing pore

作　　者：张保勇 于跃 吴强 张强 刘传海 Zhang Baoyong;Yu Yue;Wu Qiang;Zhang Qiang;Liu Chuanhai(School of Safety Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China;National Professional Center Lab of Safety Basic Research for Hydrocarbon Gas Pipeline Transportation Network,Harbin 150022,China)

机构地区：[1]黑龙江科技大学安全工程学院,哈尔滨150022 [2]瓦斯等烃气输运管网安全基础研究国家级专业中心实验室,哈尔滨150022

出　　处：《黑龙江科技大学学报》2025年第1期1-5,共5页Journal of Heilongjiang University of Science And Technology

摘　　要：为改善传统水泥基封孔材料孔隙特性和渗透特性,提高瓦斯抽采效率,利用自主搭建的封孔材料孔隙/渗透测试系统,研究聚乙烯醇水溶性聚合物改性水泥基注浆封孔材料的孔隙率、渗透率及抗压强度等参数的变化。结果表明:相较于纯水泥体系,在添加了0.5%、1%、1.5%、2%聚乙烯醇聚合物后,封孔材料的气体渗透率分别降低了13%、51%、13%、23%;聚乙烯醇聚合物的加入能够改善水泥基材料的物理组织结构,提高水泥基封孔材料的抗渗透性能并产生柔性加固,在封孔材料中添加1%的聚乙烯醇聚合物时可以达到最好的抗渗透效果。This paper aims to improve the pore characteristics and permeability of the traditional cement-based sealing materials and improve the efficiency of gas extraction.The study is accomplished by using the self-built pore/permeability test system of sealing material to conduct the experimental study on the porosity,permeability,and compressive strength of the cement-based grouting material modified by a water-soluble polymer of polyvinyl alcohol.The results show that compared with the pure cement system,the gas permeability of the sealing material is reduced by 13%,51%,13%and 23%after adding 0.5%,1%,1.5%and 2%PVA polymer,respectively.The addition of the polyvinyl alcohol polymer can improve the physical structure of cement-based materials,improve the permeability resistance of cement-based pore sealing materials,and produce flexible reinforcement.The best permeability resistance effect can be achieved by adding 1%polyvinyl alcohol polymer to the pore sealing materials.

关 键 词：聚乙烯醇聚合物 封孔材料 渗透率 孔隙率 

分 类 号：TD712[矿业工程—矿井通风与安全]