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[1]张康佳,王兆丰,王龙,等.取芯过程中煤芯温度分布特征模拟研究*[J].中国安全生产科学技术,2021,17(8):57-63.[doi:10.11731/j.issn.1673-193x.2021.08.009]
　ZHANG Kangjia,WANG Zhaofeng,WANG Long,et al.Simulation study on temperature distribution characteristics of coal core in core-taking process[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(8):57-63.[doi:10.11731/j.issn.1673-193x.2021.08.009]
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取芯过程中煤芯温度分布特征模拟研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年8期
页码:
57-63
栏目:
职业安全卫生管理与技术
出版日期:
2021-08-31

文章信息/Info

Title:
Simulation study on temperature distribution characteristics of coal core in core-taking process
文章编号:
1673-193X(2021)-08-0057-07
作者:
张康佳; 王兆丰; 王龙; 董家昕; 王俏
（1.河南理工大学 安全科学与工程学院，河南 焦作 454003；
2.湘潭大学 环境与资源学院，湖南 湘潭 411105；
3.煤矿灾害预防与抢险救灾教育部工程研究中心，河南 焦作 454003；
4.煤炭安全生产与清洁高效利用省部共建协同创新中心，河南 焦作 454003）
Author(s):
ZHANG Kangjia;  WANG Zhaofeng;  WANG Long;  DONG Jiaxin;  WANG Qiao
(1.School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;
2.College of Environment and Resources,Xiangtan University,Xiangtan Hunan 411105,China;
3.Engineering Research Center of Coal Mine Disaster Prevention and Emergency Rescue,Jiaozuo Henan 454003,China;
4.State Collaboration Innovation Center of Coal Work Safety and Clean-efficiency Utilization,Jiaozuo Henan 454003,China)
关键词:
取芯过程; 煤芯温度; 取芯管; 管壁温度
Keywords:
core-taking process;  temperature of coal core;  core-taking pipe;  pipe wall temperature
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2021.08.009
文献标志码:
A
摘要:
针对取芯过程瓦斯解吸受煤芯的温度影响不明，造成煤层瓦斯含量测不准的问题，开展对取芯过程煤芯温度分布特征研究。采用自主研制的取芯管自动测温装置在赵固二矿原生结构煤层（f=1.71）进行深度20 m的取芯试验，获得取芯管管壁温升变化规律，变化曲线分为4个阶段：缓慢上升、加速上升、减速上升、缓慢下降阶段；应用COMSOL建立含瓦斯煤传热模型，将管壁的温度变化设置为边界条件，模拟取芯过程煤芯与管壁之间的热交换。结果表明：在取芯时间30 min内，煤芯平均温度快速上升，之后上升速度趋于平稳；在煤芯内，相同时刻，等间距的轴向与径向距离，径向较轴向的温度梯度较大，径向传导快于轴向传导；取芯过程煤芯径向温度Ta与径向距离d、时间t满足指数函数关系。研究结果可为测定取芯过程煤芯的瓦斯损失量提供参考依据。
Abstract:
Based on the problem that the influence of coal core temperature on the gas desorption in the core-taking process is not clear,which leads to the inaccurate measurement of gas content in coal seam,the distribution characteristics of coal core temperature in the core-taking process were studied.Relying on the self-developed automatic temperature measuring device of core-taking pipe,the core-taking test with a depth of 20 m in the primary structure coal seam (f=1.71) of Zhaogu No.2 coal mine was carried out,and the variation laws of temperature rise on the core-taking pipe wall were obtained.The variation curve was divided into four stages,including the slow rise,accelerated rise,decelerated rise and slow decline.The COMSOL was applied to establish the heat transfer model of coal containing gas,and the temperature change of pipe wall was set as the boundary condition to simulate the heat exchange between coal core and pipe wall during the core-taking process.The results showed that the average temperature of coal core rose rapidly within 30 min of core-taking time,and then the rising speed tended to be stable.At the same time,the temperature gradient in coal core in the radial direction was larger than that of axial direction under the equally spaced axial and radial distances,and the radial conduction was faster than the axial conduction.The radial temperature of coal core in the core-taking process satisfied the exponential function relationship with the radial distance d and time t.The results provide a reference for the determination of gas loss in coal core during the core-taking process.

参考文献/References:

［1］俞启香.矿井瓦斯防治［M］.徐州：中国矿业大学出版社,1992.
［2］张宏图,魏建平,王云刚,等.煤层瓦斯含量测定定点取样方法研究进展［J］.中国安全生产科学技术,2016,12(1):186-192. ZHANG Hongtu,WEI Jianping,WANG Yungang,et al.Research progress of fixed point sampling method for determination of coal seam gas content ［J］.Journal of Safety Scienceand Technology,2016,12 (1):186-192.
［3］张子敏.瓦斯地质学［M］.徐州：中国矿业大学出版社,2009.
［4］中国煤炭工业协会.煤层瓦斯含量井下直接测定方法:GB/T 23250—2009［S］.北京：中国标准出版社，2009.
［5］李成武,王义林,王其江,等.直接法瓦斯含量测定结果准确性实验研究［J］.煤炭学报,2020,45(1):189-196. LI Chengwu,WANG Yilin,WANG Qijiang,et al.Experimental study on accuracy of gas content determination results by direct method ［J］.Journal of China Coal Socity,2020,45 (1):189-196.
［6］韩恩光,王兆丰,刘勉,等.取心管取心过程管壁温度测定试验研究［J］.煤矿安全,2019,50(6):20-23. HAN Enguang,WANG Zhaofeng,LIU Mian,et al.Experimental study on wall temperature measurement during coring process of coring tube ［J］.Coal Mine Safety,2019,50 (6):20-23.
［7］马树俊,王兆丰,韩恩光,等.瓦斯含量测定中取心管管壁温度变化特性研究［J］.煤炭科学技术,2020,48(6):95-101. MA Shujun,WANG Zhaofeng,HAN Enguang,et al.Study on temperature variation characteristics of coring tube wall in gas content determination ［J］.Coal Science and Technology,2020,48 (6):95-101.
［8］王俏,王兆丰,马树俊,等.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,2021,31(2):76-81. WANG Qiao,WANG Zhaofeng,MA Shujun,et al.Study on temperature variation characteristics of coal samples during freezing coring ［J］.Chinese Journal of safety Sciences,2021,31 (2):76-81.
［9］李小军,王兆丰,祁晨君,等.干冰为冷源的含瓦斯型煤低温冷冻试验［J］.煤炭学报,2017,42(S1):160-165. LI Xiaojun,WANG Zhaofeng,QI Chenjun,et al.Freezing experi- ments on moulded coal with methane using dry ice as cold source ［J］.Journal of China Coal Society,2017,42( S1):160-165.
［10］马向攀.低温取芯过程煤芯瓦斯解吸特性研究［D］.焦作：河南理工大学,2017.
［11］王兆丰,康博,岳高伟,等.低温环境无烟煤瓦斯解吸特性研究［J］.河南理工大学学报(自然科学版),2014,33(6):705-709. WANG Zhaofeng,KANG Bo,YUE Gaowei,et al.Study on gas desorption characteristics of anthracite in low temperature environment ［J］.Journal of Henan University of Technology (Natural ScienceEdition),2014,33 (6):705-709.
［12］胡千庭,邹银辉,赵旭生,等.煤层风和水雾联动钻取煤芯机具及其钻取煤芯的方法［P］:中国专利，CN101220735B.2011-02-09.
［13］齐黎明,陈学习,程五一,等.新型煤层瓦斯含量准确测定方法研究［J］.采矿与安全工程学报,2010,27(1):111-115. QI Liming,CHEN Xuexi,CHENG Wuyi,et al.Study on accurate determination method of new coal seam gas content ［J］.Journal of Mining and Safety Engineering,2010,27 (1):111-115.
［14］景兴鹏.机械密闭取芯瓦斯含量测定集成技术研究［J］.中国安全生产科学技术,2015,11(11):59-63. JING Xingpeng.Research on integrated technology of gas content determination in mechanical closed coring ［J］.Journal of SafetyScienceand Technology,2015,11 (11):59-63.
［15］王兆丰,谢策,祁晨君,等.低温对煤中瓦斯放散的抑制作用［J］.煤矿安全,2016,47(6):16-19. WANG Zhaofeng，XIE Ce，QI Chenjun，et al.Inhibitory effect oflow temperature on methane diffusion in Coal ［J］.Safety in Coal Mines，2016，47( 6):16-19.
［16］王兆丰,岳高伟,康博,等.低温环境对煤的瓦斯解吸抑制效应试验［J］.重庆大学学报,2014,37(9):106-112. WANG Zhaofeng，YUE Gaowei，KANG Bo，et al.Gas desorption in-hibitory effect of coal in low temperature environment［J］.Journal of Chongqing University，2014，37(9):106-112.

相似文献/References:

[1]王兆丰,刘勉,韩恩光,等.含瓦斯煤低温取芯过程煤芯温度变化规律实验研究[J].中国安全生产科学技术,2018,14(11):101.[doi:10.11731/j.issn.1673-193x.2018.11.016]
　WANG Zhaofeng,LIU Mian,HAN Enguang,et al.Experimental study on change laws of coal core temperature during low temperature coring process of coal containing gas[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(8):101.[doi:10.11731/j.issn.1673-193x.2018.11.016]

备注/Memo

备注/Memo:
收稿日期： 2021-06-05
* 基金项目： 国家自然科学基金项目(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项目(WS2018B13)
作者简介： 张康佳，硕士研究生，主要研究方向为瓦斯灾害预测与防治。
更新日期/Last Update: 2021-09-08