U型通风下采空区发火过程模拟研究与模型改进

系统仿真学报 ›› 2015, Vol. 27 ›› Issue (12): 3096-3101.

U型通风下采空区发火过程模拟研究与模型改进

崔铁军^1,2,3, 马云东³, 王来贵⁴

1.辽宁工程技术大学安全科学与工程学院,辽宁阜新 123000;
2.矿山热动力灾害与防治教育部重点实验室,辽宁阜新 123000;
3.大连交通大学辽宁省隧道与地下结构工程技术研究中心,辽宁大连 116028;
4.辽宁工程技术大学力学与工程学院, 辽宁阜新 123000

收稿日期:2014-07-08 修回日期:2014-12-14 出版日期:2015-12-08 发布日期:2020-07-30
作者简介:崔铁军(1983-),男,辽宁,博士,研究方向为安全理论、数值模拟、算法。
基金资助:
国家自然科学基金(51274110,51474121,51274113); 国家自然科学基金煤炭联合基金项目(U1261121)

Simulation on Spontaneous Combustion of Goaf under “U” Type Ventilation and Improvement

Cui Tiejun^1,2,3, Ma Yundong³, Wang Laigui⁴

1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China;
2. Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education, Fuxin Liaoning 123000, China;
3. Tunnel & Underground Structure Engineering Center of Liaoning, Dalian Jiaotong University, Dalian 116028, China;
4. School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China

Received:2014-07-08 Revised:2014-12-14 Online:2015-12-08 Published:2020-07-30

摘要/Abstract

摘要： 为了解U型通风下采空区遗煤层自然发火过程中,不同时间的温度和升温区的变化,提出使用颗粒流理论为基础的模型。解决氧的等效、流动和与煤反应的3个基本问题,并用FISH予以实现。根据实际工况模拟得升温过程可分为3个阶段,并分析了6个发展时间的升温特征,得遗煤发火自燃过程中升温区的变化与氧气流动有很大关系。采集这6个时间的实际遗煤层温度,分析与模拟结果的差别,得到模型还应考虑割煤时在遗煤层内部产生裂隙。改进后模型结果虽与实际升温区变化仍存在一定差异,但在升温时间与温度的关系方面更为准确,升温区扩散程度也更为接近事实。

关键词: U型通风, 采空区, 遗煤自燃过程, 颗粒流, 遗煤裂隙, 模型改进

Abstract: To understand the change of temperature and heating area, in different time, in the process of spontaneous combustion of goaf under “U” type ventilation, the model was proposed based on the theory of particle flow. The three basic problems of Oxygen equivalent flow and reaction with the coal were solved, and implemented with FISH. According to the actual working condition, the heating process was simulated, which could be divided into three stages, and the characteristics of the six warming development time were analyzed, finding that the heating area change was related with the oxygen flow in the process of spontaneous combustion of coal. Collection of the six time of heritage coal actual temperature, and the difference between these and simulation results were analyzed; It was generated that the coal seam crack considering cutting coal should also be additional. The improved model results still exist certain differences with the actual heating area change, but in terms of the relationship between the heating time and temperature is more accurate, the spread of degree of heating area is much closer to the truth.

Key words: u type ventilation, goaf, spontaneous combustion, pfc, coal seam crack, simulation and improvement

中图分类号:

X936

崔铁军, 马云东, 王来贵. U型通风下采空区发火过程模拟研究与模型改进[J]. 系统仿真学报, 2015, 27(12): 3096-3101.

Cui Tiejun, Ma Yundong, Wang Laigui. Simulation on Spontaneous Combustion of Goaf under “U” Type Ventilation and Improvement[J]. Journal of System Simulation, 2015, 27(12): 3096-3101.

参考文献

[1] 刘伟, 秦跃平, 郝永江, 等. “Y”型通风下采空区自然发火数值模拟[J]. 辽宁工程技术大学学报(自然科学版), 2013, 32(7): 874-879.
[2] 林立峰. 采空区遗煤氧化自燃规律的模拟研究 [D]. 阜新: 辽宁工程技术术大学, 2010, 12.
[3] 题正义, 张春, 李宗翔. 复杂沟通条件下遗煤自燃规律的数值模拟[J]. 辽宁工程技术大学学报(自然科学版), 2012, 31(5): 577-580.
[4] 李林, 姜德义, B B Beamish.基于绝热实验活化能解算煤自然发火期[J]. 煤炭学报, 2010, 35(5): 802-805.
[5] 周季夫. 基于快速氧化实验的巷道周边煤体自燃数值模拟研究 [D]. 大连: 大连理工大学, 2013, 6.
[6] 张春, 题正义, 李宗翔. 极限平衡区顶煤自燃三维非均质动态数值模拟[J]. 中国安全科学学报, 2012, 22(5): 37-43.
[7] 杨永良, 李增华, 高思源, 等. 煤实验最短自然发火期定量测定方法研究[J]. 采矿与安全工程学报, 2011, 28(3): 456-461.
[8] 杨永良. 煤最短自然发火期测试及煤堆自燃防治技术研究 [D]. 北京: 中国矿业大学, 2009, 6.
[9] 张春, 题正义, 李宗翔. 内含瓦斯抑制条件下极限平衡区顶煤自燃模拟[J]. 中国矿业大学学报, 2013, 42(1): 57-61.
[10] De Rosa M.Analysis of Mine Fires for All US Underground and Surface Coal Mining Categories 1990-1999[M]. Atlanta, USA: National Institute for Occupational Safety and Health Information Circular 9470, 2004: 120-125.
[11] 武鹏. 陈家沟煤矿综放面采空区煤自然发火预测研究 [D]. 西安: 西安科技大学, 2010.
[12] Yuan L, Smith AC, Brune JF.Computational Fluid Dynamics Study on the Ventilation Flow Paths in Longwall Gobs[C]// Pennsylvania, USA: University Park, 2007: 23-27.
[13] 崔铁军, 马云东. 火灾中非均匀温场热力耦合隧道管片受力分析[J]. 应用力学学报, 2013, 30(6): 1-5.
[14] 张洋, 马云东, 崔铁军. 火灾中混合温场下隧道管片受力分析[J]. 火灾科学, 2013, 22(4): 113-118.
[15] 邵昊, 蒋曙光, 王兰云, 等. 尾巷对采空区煤自燃影响的数值模拟研究[J]. 采矿与安全工程学报, 2011, 23(1): 45-50.
[16] 崔铁军, 马云东, 王来贵. 基于PFC3D的露天矿边坡爆破过程模拟及稳定性研究[J]. 应用数学和力学, 2014, 35(7): 759-767.
[17] 崔铁军, 马云东. 均匀火灾温场下隧道管片受力分析[J]. 中国安全生产科学技术, 2014, 10(5): 37-42.
[18] 崔铁军, 马云东. 混合温场作用下地铁车站结构的热力研究[J]. 应用力学学报, 2014, 31(3): 412-417.
[19] Itasca. PFC概况 [EB/OL]. (2010-03-10) [2014-07-08]. http://itasca.cn/ruanjian.jsp?sclassid=106&classid=18.
[20] Itasca. Particle Flow Code in 3 Dimensions Online Manual [EB/OL]. (2010-03-25) [2014-07-08]. http://itasca.cn/xiazai.jsp?sclassid=15&classid=4.