中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (9): 45-50.doi: 10.16265/j.cnki.issn1003-3033.2017.09.008

• 安全系统学 • 上一篇    下一篇

松软煤层瓦斯突出模拟试验相似材料研究

何生全, 金龙哲**1 教授, 李雅阁, 卢尧, 李玉丹, 何学秋 教授   

  1. 北京科技大学 土木与资源工程学院,北京 100083
  • 收稿日期:2017-06-10 修回日期:2017-08-15 出版日期:2017-09-20 发布日期:2020-11-16
  • 通讯作者: **金龙哲(1963—),男,北京人,博士,教授,博士生导师,主要从事矿山安全领域方面的研究。E-mail:lzjin@ustb.edu.cn。
  • 作者简介:何生全 (1993—),男,回族,宁夏固原人,博士研究生,研究方向为瓦斯抽采及突出防治。E-mail:946956134@qq.com。
  • 基金资助:
    国家自然科学基金资助(51574017)。

Study on similar material to soft coal seam for gas outburst simulation experiment

HE Shengquan, JIN Longzhe, LI Yage, LU Yao, LI Yudan, HE Xueqiu   

  1. School of Civil and Resource Engineering, University of Science & Technology Beijing, Beijing 100083, China
  • Received:2017-06-10 Revised:2017-08-15 Online:2017-09-20 Published:2020-11-16

摘要: 为探究松软煤层瓦斯突出规律,基于正交试验以腐殖酸钠溶液为胶结剂、不同粒径煤粉为骨料,配制不同配比的相似材料,采用极差分析、数据拟合等方法研究腐殖酸钠溶液质量分数、成型水分等对相似材料的力学特性及吸附解析等特性的影响。结果表明:腐殖酸钠溶液质量分数对相似材料力学特性起主要控制作用。成型水分和腐殖酸钠溶液质量分数均显著影响相似材料瓦斯吸附解析等特性,累计解吸量和瓦斯吸附量随着腐殖酸钠溶液质量分数的增加;累计解吸量随水分含量的增加而减小,瓦斯吸附量随平衡压力增大而增大。材料渗透率随着腐殖酸钠溶液质量分数呈负指数函数变化。

关键词: 松软煤, 固-气耦合, 相似材料, 正交试验, 瓦斯基本参数, 瓦斯突出

Abstract: In order to explore the law of gas outburst in soft coal seam, similar materials, which were different each other in composition, were prepared on the basis of orthogonal experiments. In the similar materials, sodium humate solution was used as a cementing agent and pulverized coal as aggregate. The effects of mass fraction of sodium humate in the solution, moisture content and other parameters on the mechanical, adsorption and other properties of similar materials were studied by means of range analysis and data fitting. The results show that the mass fraction of sodium humate in the solution plays a major role in controlling the mechanical properties of similar materials, that both the molding moisture and the mass fraction of sodium humate in the solution have a significant impact on the gas adsorption and desorption characteristics of similar material, the cumulative desorption volume, and the gas adsorption volume increases with the increase in the mass fraction of sodium humate in the solution, that the cumulative desorption volume decreases with the increase of moisture content, and the gas adsorption volume increases with the gas pressure increasing, that the permeability of similar materials changes with the increase of mass fraction of sodium humate in the solution as a negative exponential function.

Key words: soft coal, solid-gas coupling, similar material, orthogonal method, adsorption properties, gas outburst

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