煤田火区发展演化的多场耦合作用过程

马砺; 刘庚; 肖旸; 鲁军辉; 何勇军

doi:10.3981/j.issn.1000-7857.2016.2.031

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科技导报 ›› 2016, Vol. 34 ›› Issue (2) : 190-194. DOI: 10.3981/j.issn.1000-7857.2016.2.031

综述文章

煤田火区发展演化的多场耦合作用过程

作者信息 -

1. 西安科技大学西部煤矿安全教育部工程研究中心, 西安 710054;
2. 西安科技大学能源学院, 西安科技大学西部矿井开采及灾害防治教育部重点实验室, 西安 710054;
3. 西安科技大学能源学院, 西安 710054

作者简介:

马砺,副教授,研究方向为矿山重大灾害及其防治、安全技术及工程,电子信箱:malifuture@126.com

Research on multi-field coupling process of coalfield fire area development and evolution

Author information -

1. Engineering Research Center of West-China Coal Mine Safety, Ministry of Education; Xi'an University of Science and Technology, Xi'an 710054, China;
2. Key Laboratory of Western Mine Exploration and Hazard Prevention, Ministry of Education; College of Energy Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China;
3. College of Energy Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

摘要

针对煤田火区发展演化多场耦合作用过程,分析了热-流-固耦合机理及不同时期煤体燃烧状态及产物。揭示了煤田火区发展演化是由煤氧复合化学反应而放热升温,产生热应力及烧空区致使上覆岩层失稳塌陷,形成煤岩体裂隙网络产生裂隙场,从而为氧气及燃烧产物对流循环提供通道,进一步促使火区向深部扩展延伸的灾变机理。因此,煤田火区温度场、裂隙应力场、渗流场及化学场之间的耦合作用是加速煤体燃烧的非线性动力循环过程。

Abstract

Aiming at the multi-field coupling process of coalfield fire area development and evolution, this paper analyzes the thermalhydrological-mechanical coupling mechanism and states together with products of coal combustion in different periods. This paper also reveals the disaster mechanism of development and evolution of coalfield fire area as a series of activities: Heat releasing originated from coal oxygen complex chemical reactions and overlying strata collapse made by burn out area, followed by the fracture network formed by cracks in coal and rock mass, which provide circulation channel for oxygen and combustion products, ultimately the expansion of the fire disaster mechanism extending to the deep. Thus, the coupling of the coal fire thermal hydrological mechanical and chemical field is an accelerating nonlinear dynamic cycle process of coal combustion. The results provide a scientific basis for the prevention and control of coalfield fire.

导出引用

马砺, 刘庚, 肖旸, 鲁军辉, 何勇军. 煤田火区发展演化的多场耦合作用过程[J]. 科技导报, 2016, 34(2): 190-194 https://doi.org/10.3981/j.issn.1000-7857.2016.2.031

MA Li, LIU Geng, XIAO Yang, LU Junhui, HE Yongjun. Research on multi-field coupling process of coalfield fire area development and evolution[J]. Science & Technology Review, 2016, 34(2): 190-194 https://doi.org/10.3981/j.issn.1000-7857.2016.2.031

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