多层采空区流场局部动态平衡数学建模分析Mathematical model for the local dynamic balance of multi-goaf air ventilation systems
张勋;王继仁;邓存宝;张效春;王雪峰;
摘要(Abstract):
针对大同矿区浅埋深、多煤层群、近距离、两硬条件下开采形成的多层采空区极易发生自燃的问题,进行风流流场调压分析,以达到控制采空区遗煤自燃及防止有害气体流入工作面的目标。建立了多层采空区流场调压数学模型,得出工作面风压调节的最优参数,结合工程实际分析,确定了多层采空区流场调压需要达到的预期效果。提出多层采空区流场局部动态平衡的调压方法,结合达西线性渗流定律,确定了多层采空区流场达到局部动态平衡的调压允许范围,并提出调压自动控制方法。
关键词(KeyWords): 安全工程;多层采空区;流场;调压;局部;动态平衡
基金项目(Foundation): 国家自然科学基金项目(51174108)
作者(Authors): 张勋;王继仁;邓存宝;张效春;王雪峰;
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