松软煤层瓦斯突出模拟试验相似材料研究

发布时间：2018-02-27 14:48

本文关键词： 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　出处：《中国安全科学学报》2017年09期 　论文类型：期刊论文

【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。
[Abstract]:In order to explore of soft coal seam gas outburst law, based on the orthogonal experiment with humic acid sodium solution as cementing agent, pulverized coal with different particle size as aggregate, similar material with different proportions, by range analysis, data fitting method of humic acid sodium concentration, influence of moisture content on the forming of similar material mechanical properties and adsorption analysis etc. characteristics. The results show that the mass fraction of humic acid sodium solution controlled the similar mechanical properties of materials. The mass fraction of sodium aluminate solution forming water and humic significantly affect the adsorption and desorption characteristics of similar material of gas, the cumulative desorption amount and quantity of the gas with the increase of humic acid sodium solution concentration increased with cumulative desorption; the moisture content decreases, gas adsorption capacity increases with the increase of the equilibrium pressure. Material with permeability of humic acid sodium solution concentration has a negative exponential function change .

【作者单位】：北京科技大学土木与资源工程学院;
【基金】：国家自然科学基金资助(51574017)
【分类号】：TD713

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