矿井瓦斯与煤自燃共生灾害:耦合关系、致灾机制、防控技术

doi:10.16265/j.cnki.issn 1003-3033.2020.10.021

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (10): 149-155.doi: 10.16265/j.cnki.issn 1003-3033.2020.10.021

矿井瓦斯与煤自燃共生灾害:耦合关系、致灾机制、防控技术

张巨峰^1,2 副教授, 施式亮^**1 教授, 鲁义¹ 副教授, 游波¹ 副教授

1 湖南科技大学资源环境与安全工程学院,湖南湘潭 411201;
2 陇东学院能源工程学院,甘肃庆阳 745000

收稿日期:2020-07-17 修回日期:2020-09-13 出版日期:2020-10-28 发布日期:2021-07-15
通讯作者: **施式亮(1962—),男,浙江天台人,博士,教授,博士生导师,主要从煤矿灾害预防与控制、系统安全评价与预测、安全系统工程等方面的研究。E-mail:hnustssl@qq.com
作者简介:张巨峰 (1983—),男,山西应县人,博士研究生,副教授,主要从事煤矿灾害预防与控制方面的研究。E-mail: jufeng6100229@126.com。
基金资助:
国家自然科学基金面上项目资助(51774135,51974120,51974119);甘肃省青年科技计划项目(18JR3RM240);甘肃省安全生产科技项目(GAJ00011)。

Symbiotic disasters of mine gas and coal spontaneous combustion: coupling relationship, disaster mechanism, prevention and control technology

ZHANG Jufeng^1,2, SHI Shiliang¹, LU Yi¹, YOU Bo¹

1 School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China;
2 School of Energy Engineering, Longdong University, Qingyang Gansu 745000, China

Received:2020-07-17 Revised:2020-09-13 Online:2020-10-28 Published:2021-07-15

摘要/Abstract

摘要： 为了探索矿井瓦斯与煤自燃共生灾害防控关键科学问题,研发智能化技术装备,保障高瓦斯易燃煤层安全开采,基于共生灾害多尺度、多时空、多物理化学场耦合的复杂演化过程,从瓦斯对煤炭氧化自燃的抑制和煤自燃对瓦斯爆炸极限的影响2个方面,分析共生灾害的耦合关系;考虑煤层瓦斯抽采过程中煤基质瓦斯-扩散-渗流、裂隙瓦斯-空气混流以及煤体吸附/解吸引起的煤基质变形过程,建立瓦斯抽采流-固耦合模型和煤自燃发火流-固-热耦合模型,揭示共生灾害致灾机制;归纳总结瓦斯与煤自燃共生灾害防控理论和技术,展望未来的发展趋势。研究结果表明:瓦斯与煤自燃共生灾害的发生是裂隙场内漏风氧气场、蓄热温度场、瓦斯分布场等多场耦合在时间维度上积累的结果,对其防控的关键在于共生灾害动态风险精准识别、实时预警和响应措施的快速执行。

关键词: 矿井瓦斯, 煤自燃, 共生灾害, 耦合特征, 致灾机制, 防控技术

Abstract: In order to explore key scientific issues of prevention and control of gas and coal spontaneous combustion in mines, and to develop intelligent technology and equipment as well as to ensure safe mining of high gassy and flammable coal seam, based on complex evolution process of multi-scale, multi-temporal and multi-physical-chemical field coupling, symbiotic disasters were analyzed from two aspects, namely inhibition of gas on coal oxidation and spontaneous combustion and impacts of the latter on gas explosion limit. Then, a fluid solid coupling model of gas drainage and a fluid solid thermal coupling model of coal spontaneous combustion were established to reveal mechanism of symbiotic disasters considering deformation process of coal matrix caused by its gas diffusion and seepage, fracture gas air mixed flow and coal adsorption or desorption. Finally, prevention and control theory and technology were summarized, and future development trend was prospected. The results show that such symbiotic disaster is an outcome of multiple coupling in air leakage oxygen field, heat storage temperature field, gas distribution field, etc., and the key of its prevention and control lies in accurate identification of dynamic risks, real-time early warning and rapid implementation of responsive measures.

Key words: mine gas, coal spontaneous combustion, symbiotic disasters, coupling, disaster mechanism, prevention and control technology

中图分类号:

X915.5

张巨峰, 施式亮, 鲁义, 游波. 矿井瓦斯与煤自燃共生灾害:耦合关系、致灾机制、防控技术[J]. 中国安全科学学报, 2020, 30(10): 149-155.

ZHANG Jufeng, SHI Shiliang, LU Yi, YOU Bo. Symbiotic disasters of mine gas and coal spontaneous combustion: coupling relationship, disaster mechanism, prevention and control technology[J]. China Safety Science Journal, 2020, 30(10): 149-155.

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矿井瓦斯与煤自燃共生灾害:耦合关系、致灾机制、防控技术

Symbiotic disasters of mine gas and coal spontaneous combustion: coupling relationship, disaster mechanism, prevention and control technology

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