| 冷冻取芯过程煤样温度变化特性研究 |
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| 引用本文： | 王俏,王兆丰,马树俊,张康佳.冷冻取芯过程煤样温度变化特性研究[J].中国安全科学学报,2021(2):76-81. |
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| 作者姓名： | 王俏 王兆丰 马树俊 张康佳 |
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| 作者单位： | 河南理工大学安全科学与工程学院;煤矿灾害预防与抢险救灾教育部工程研究中心;河南理工大学测绘与国土信息工程学院 |
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| 基金项目： | 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项目(171RSTHN030);河南省高等学校重点科研项目(19B440002);河南省瓦斯地质与瓦斯治理重点实验室—省部共建国家重点实验室培育基地开放基金资助(WS2018B13)。 |
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| 摘 要： | 为探究冷冻取芯过程煤样温度变化特性,基于模拟试验的相似性,自主设计冷冻取芯模拟测试试验装置,选取榆家梁矿、首山一矿、六龙煤矿、九里山矿4个矿区不同变质程度煤样,用以测定瓦斯吸附平衡压力为0、1.0、2.0、3.0 MPa下冷冻取芯过程煤样的温度实时变化数据,并统计分析各条件下的数据。研究结果表明:冷冻取芯技术的冷冻效果与煤变质程度及瓦斯吸附平衡压力呈正相关关系;冷冻取芯对含瓦斯煤冷冻效果优于不含瓦斯煤;冷冻取芯对高变质煤冷冻效果优于低变质煤;冷冻取芯过程中,煤样温度随时间变化曲线符合指数函数关系。
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| 关 键 词： | 冷冻取芯 煤样温度 瓦斯吸附平衡压力 煤变质程度 煤层瓦斯含量 |
Study on temperature variation of coal sample in process of freezing coring |
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| WANG Qiao,WANG Zhaofeng,Ma Shujun,Zhang Kangjia.Study on temperature variation of coal sample in process of freezing coring[J].China Safety Science Journal,2021(2):76-81. |
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| Authors: | WANG Qiao WANG Zhaofeng Ma Shujun Zhang Kangjia |
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| Institution: | (School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;Ministry of Education Engineering Center of Mine Disaster Prevention and Rescue,Jiaozuo Henan 454003,China;School of Surveying and Land Information Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China) |
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| Abstract: | In order to explore change characteristics of coal sample temperature during process of freezing coring,a test equipment was designed independently based on similarity of simulation tests.Temperature change was measured under equilibrium gas adsorption pressure of 0,1.0,2.0 and 3.0 MPa respectively for samples of different metamorphism selected from Yujialiang Mine,Shoushan No.1 Mine,Liulong Mine and Jiulishan Mine.Then,real-time data of their temperature change during freezing coring was analyzed.The results show that the technology’s freezing effect is positively correlated with coal metamorphism and gas adsorption equilibrium pressure.It has better freezing performance on coal with gas than non-gas coal,better on high metamorphic coal than on low metamorphic one.During freezing coring,change curve of coal sample temperature with time accords with exponential function. |
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| Keywords: | freezing coring temperature of coal sample gas adsorption equilibrium pressure coal metamorphism coal seam gas content |
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