用于煤与瓦斯突出模拟的型煤胶结材料配比实验研究

发布时间：2018-03-11 21:36

本文选题：煤与瓦斯突出　切入点：型煤配比　出处：《煤矿安全》2016年04期 　论文类型：期刊论文

【摘要】：鉴于煤与瓦斯突出模拟实验所用的型煤一般与原煤性能差异较大,以硅酸盐水泥、腐殖酸钠、羟甲基纤维素钠和硅酸钠等材料为基料,分别研究各类胶结材料对煤的力学性质、坚固性系数、瓦斯吸附解吸特性的影响。并通过正交实验复配研发新型型煤胶结剂,用于突出模拟试验的型煤制作。实验结果表明:水泥能够迅速提高型煤的抗压强度和坚固性系数,也会极大减弱瓦斯吸附性能。腐殖酸钠含量的增加有利于煤吸附瓦斯,但对煤的坚固性与力学性能提升有限。当胶结剂比例为水泥:腐殖酸钠∶CMC∶活性炭=2%∶(12%~15%)∶4%∶(4%~6%),型煤的抗压强度和瓦斯吸附特性与原煤的差异控制在10%以内。性质上与原煤较为接近,更适用于煤与瓦斯突出模拟试验。
[Abstract]:In view of the fact that the properties of briquette used in the simulation experiment of coal and gas outburst are quite different from that of raw coal, the mechanical properties of all kinds of cementing materials to coal are studied using Portland cement, sodium humate, sodium hydroxymethyl cellulose and sodium silicate as basic materials. The influence of the coefficient of solidity and gas adsorption and desorption, and the research and development of new briquette cementing agent by orthogonal experiment, The experimental results show that cement can rapidly improve the compressive strength and robustness coefficient of briquette, and greatly weaken the gas adsorption performance. The increase of humic acid sodium content is beneficial to coal adsorption of gas. When the ratio of cementing agent to cement is cement: sodium humate: CMC: activated carbon 2: 12, there are two parts: four parts and five parts, the compressive strength and gas adsorption characteristics of briquette are controlled within 10%. The properties of briquette are close to that of raw coal. More suitable for coal and gas outburst simulation test.
【作者单位】：太原理工大学矿业工程学院;
【基金】：山西省科技攻关资助项目(20130313027-1)
【分类号】：TD713

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