煤矿安全2024，Vol.55Issue(9)：110-117,8.DOI:10.13347/j.cnki.mkaq.20240459
流场对采空区温度分布演化规律的影响研究
Study on the influence of flow field on evolution law of temperature distribution in goaf
摘要
Abstract
Accurately grasping the distribution and evolution law of coal spontaneous combustion temperature in goaf is a prerequis-ite for improving the prevention and control effect of coal spontaneous combustion.Taking the 15103 working face of Wenzhuang Coal Mine as the prototype,a similar experimental platform for heterogeneous goaf was established to explore the evolution law of temperature distribution in goaf under different flow field conditions,and the influence of different wind speed and unsteady wind flow conditions on the evolution of temperature distribution in goaf was analyzed.The results show that both porosity and wind flow have a certain influence on the temperature distribution,and the temperature distribution will be biased towards the large porosity area and the downwind area of the wind flow.Under the condition of unsteady flow field,the high temperature area of goaf will ex-pand,resulting in the increase of coal spontaneous combustion danger area.The migration phenomenon of high temperature area and high temperature point under the action of airflow was found,and the migration principle was revealed.关键词
煤自燃/流场/温度分布/高温区域/非稳态风流/采空区Key words
coal spontaneous combustion/flow field/temperature distribution/high-temperature area/unsteady-state wind flow/goaf分类
矿业与冶金引用本文复制引用
秦桐,郭朝伟,邵昊,孙耀辉..流场对采空区温度分布演化规律的影响研究[J].煤矿安全,2024,55(9):110-117,8.基金项目
山西省青年基金资助项目(202303021222249) （202303021222249）
山西省高等学校教学改革创新资助项目(J20231336) （J20231336）
