采场气体涌出与煤自燃的动态数值模拟研究

doi:10.16265/j.cnki.issn1003-3033.2017.07.006

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (7): 30-35.doi: 10.16265/j.cnki.issn1003-3033.2017.07.006

采场气体涌出与煤自燃的动态数值模拟研究

董子文¹ 讲师, 刘爱群^**1 教授, 齐庆杰² 教授, 于文惠¹, 滕广平¹

1 湖南工学院安全与环境工程学院,湖南衡阳 421002;
2 辽宁工程技术大学安全科学与工程学院,辽宁阜新 123000

收稿日期:2017-04-08 修回日期:2017-06-15 发布日期:2020-11-26
通讯作者: ^**刘爱群(1965—),女,湖南耒阳人,硕士,副教授,主要从事安全人机工程、安全系统工程方面的研究。E-mail:89338723@qq.com。
作者简介:董子文 (1987—),男,安徽淮北人,博士,讲师,主要从事煤矿火灾防治及安全系统工程研究和教学。E-mail:dzw2ywh@163.com。
基金资助:
国家自然科学基金资助(51274115,51274113)。

Research on dynamic numerical simulation of gas emission and coal spontaneous combustion in stope

DONG Ziwen¹, LIU Aiqun¹, QI Qingjie², YU Wenhui¹, TENG Guangping¹

1 School of Safety and Environment Engineering, Hunan Institute of Technology,Hengyang Hunan 421002,China;
2 School of Safety Science and Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China

Received:2017-04-08 Revised:2017-06-15 Published:2020-11-26

摘要/Abstract

摘要： 为提升采场气体涌出和遗煤自燃问题的数值模拟可靠性,实现动态仿真计算,使用COMSOL Multiphysics软件,建立变形几何(DG)物理场、流场、温度场、浓度场等多场耦合的动态模拟模型。研究工作面推进对采场气体涌出及遗煤自燃的影响。对比数值模拟与现场测试结果,验证模型的有效性。结果表明:在工作面的日均瓦斯体积分数、CO体积分数、每日最大瓦斯及CO体积分数、采空区氧气体积分数与自燃“三带”分布6个方面,模拟结果的相对误差限为-15 %～15 %,平均相对误差为-1.16 %～2.67 %,数值模拟结果与实测结果的动态变化趋势一致。

关键词: 动态采场, 变形几何(DG), COMSOL Multiphysics, 多场耦合, 数值模拟

Abstract: In order to improve the reliability of numerical simulation of the gas emission and residual coal spontaneous combustion in stope and realize the dynamic simulation calculation, a dynamic multi-physics numerical simulation model was established, which coupling deformation geometry, flow field, temperature field and concentration field by using the software of COMSOL Multiphysics. Effects of advancement of the active face on both the gas emission and the coal spontaneous combustion were studied by means of simulation and measurement. Effectiveness of the dynamic model was verified by comparison between simulation result with result. The relativeerror limits of simulation results are -15%-15%, average relative error is -1.16%-2.67%, for the 6 aspects including average and maximum concentration of gas and CO, concentration of oxygen and spontaneous combustion three zones in goaf, and that the dynamic change trend of numerical simulation results is consistent with that of the field measurement results.

Key words: dynamic stope, deformed geometry(DG), COMSOL Multiphysics, multi-physics coupling, numerical simulation

中图分类号:

X932

董子文, 刘爱群, 齐庆杰, 于文惠, 滕广平. 采场气体涌出与煤自燃的动态数值模拟研究[J]. 中国安全科学学报, 2017, 27(7): 30-35.

DONG Ziwen, LIU Aiqun, QI Qingjie, YU Wenhui, TENG Guangping. Research on dynamic numerical simulation of gas emission and coal spontaneous combustion in stope[J]. China Safety Science Journal, 2017, 27(7): 30-35.

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采场气体涌出与煤自燃的动态数值模拟研究

Research on dynamic numerical simulation of gas emission and coal spontaneous combustion in stope

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