温度变化对煤体坚固性系数的影响
发布时间:2018-04-04 19:45
本文选题:坚固性系数 切入点:温度变化 出处:《煤矿安全》2015年06期
【摘要】:为了测定不同实验温度对煤坚固性系数的影响,设计制造了温度可调的坚固性系数测定装置,对煤样分组进行实验,在温度为-20~60℃之间,每隔10℃就测定1个坚固性系数,得到不同温度时刻的煤坚固性系数值,实验结果表明:煤体坚固性系数随着温度升高而减小,随着温度降低而增大,不同煤样受温度影响程度不一样,煤体越坚硬,变化的幅度越大,煤体越软,变化的幅度就越小。
[Abstract]:In order to determine the influence of different experimental temperatures on the stability coefficient of coal, a device for measuring the coefficient of robustness of coal with adjustable temperature was designed and manufactured. The coal samples were divided into groups. At the temperature of -20 ~ 60 鈩,
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