中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (11): 126-131.doi: 10.16265/j.cnki.issn1003-3033.2017.11.022

• 安全工程技术科学 • 上一篇    下一篇

用水敏指示剂快速测定重塑煤体渗吸高度的研究

岳基伟1, 王兆丰1,2 教授, 陈金生1,2 讲师, 李皓伟1   

  1. 1 河南理工大学 安全科学与工程学院,河南 焦作 454000
    2 煤矿灾害预防与抢险救灾教育部工程研究中心,河南 焦作 454000
  • 收稿日期:2017-08-13 修回日期:2017-10-17 发布日期:2020-10-21
  • 作者简介:岳基伟 (1990—),男,河南临颍人,博士研究生,研究方向为瓦斯灾害预测与防治。E-mail:yjwhpu@163.com。
  • 基金资助:
    国家自然科学基金资助(51274090);河南省高校科技创新团队支持计划(17IRTSTHN030)。

Study on rapid determination of imbibition height of remolded coal by water sensitive indicator

YUE Jiwei1, WANG Zhaofeng1,2, CHEN Jinsheng1,2, LI Haowei1   

  1. 1 School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454000,China
    2 MOE Engineering Center of Mine Disaster Prevention and Rescue, Jiaozuo Henan 454000,China
  • Received:2017-08-13 Revised:2017-10-17 Published:2020-10-21

摘要: 为减小煤层瓦斯含量,预防煤与瓦斯突出事故,用羧甲基纤维素、碳酸钙、二氧化钛等开发一种遇水实时显色的水敏指示剂,来准确、快速测定外加水分在多孔介质中的渗吸高度。采用该水敏指示剂测试不同颗粒配比和压制负荷的重塑煤体渗吸高度,并将其测试结果与切片法测试含水率突变得到的渗吸高度进行对比分析。结果表明:将羧甲基纤维素、碳酸钙、二氧化钛、硫酸钴、硫氰酸钴和水,按质量比1∶2∶5∶6∶13∶32混合,可制得实时显色的水敏指示剂;用这种指示剂测定的渗吸高度与切片法测试得到的结果十分吻合,相对误差不超过7%。

关键词: 水敏指示剂, 含水率, 快速测定, 重塑煤体, 渗吸高度

Abstract: In order to accurately and rapidly determine the imbibition height of added water in porous media, guide hole arrangement distance of coal seam infusion and reduce the gas content in coal seam, a water sensitive indicator, consisting of titanium dioxide, calcium carbonate, titanium dioxide and so on, was developed.Using the water sensitive indicator to test imbibition heights of the remolded coals that consist of different ratio of particles and pressing loads, then compared and analyzed the imbibition height obtained by water sensitive indicator and slice method test sudden change of water content.The results show that mixing titanium dioxide, calcium carbonate, titanium dioxide, cobaltous sulfate, cobalt thiocyanate and water according to the mass proportion of 1∶2∶5∶6∶13∶32 can produce a water sensitive indicator, and that imbibition heights obtained by water sensitive indicator test agree well with those obtained by using the slice method, and the relative errors are less than 7%.

Key words: water sensitive indicator, water content, rapid determination, remolded coal, imbibition height

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