| 特厚煤层自燃关键参数现场观测及动态数值模拟研究 |
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| 引用本文： | 邢震. 特厚煤层自燃关键参数现场观测及动态数值模拟研究[J]. 煤炭工程, 2020, 52(2): 111-115. DOI: 10.11799/ce202002024 |
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| 作者姓名： | 邢震 |
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| 作者单位： | 天地（常州）自动化股份有限公司 |
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| 基金项目： | 国家重点研发计划"煤矿重大灾害感知技术和装备" |
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| 摘 要： | 根据特厚煤层采空区内遗煤的分布规律，优化布置气体监测测点，根据现场观测结果分析O2分布规律。根据试验工作面物理模型简化得到数值模拟的计算模型，进行了不同工况条件下采空区自然发火动态数值计算，研究了影响煤自然发火至关重要的关键参数，包括煤自燃危险区域内气体随着时间变化的渗流速度分布及O2浓度分布情况、高温火源点变化趋势，以及防止煤自然发火的工作面最小回采速度等。
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| 关 键 词： | 特厚煤层 煤自燃 关键参数 现场观测 数值模拟 |
| 收稿时间： | 2018-08-10 |
| 修稿时间： | 2019-06-04 |
Field observation and dynamic numerical simulation research on the key parameters of specially thick coal seam spontaneous combustion |
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| Abstract: | According to the characteristics of the coal distribution of thick coal seam，layout the gas station accord with the actual situation，distribution of oxygen in the mined-out area is studied through field observations，take CO concentration as a case studies distribution of dangerous gas in the mined-out area，according to the test face physical model simplified calculation model for numerical simulation，carried out goaf spontaneous combustion dynamic numerical calculation under different working conditions.Studied the influence of key parameters of coal spontaneous combustion is crucial，including changes with time of gas inside the coal spontaneous combustion danger zone seepage velocity distribution and oxygen concentration distribution，high temperature fire point change trend， and preventing coal spontaneous combustion of coal face minimum mining speed， etc |
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