| 郑丹,曾庆福,贾进章,洪林,马驰.基于大面积网格法的商场疏散时间预测[J].火灾科学,2017,26(1):43-48. |
| 基于大面积网格法的商场疏散时间预测 |
| Prediction of mall evacuation time based on large grid method |
| 投稿时间：2016-07-26 修订日期：2016-09-25 |
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| DOI：10.3969/j.issn.1004-5309.2017.01.06 |
| 基金项目:辽宁省高等学校杰出青年学者成长计划基金项目（LJQ2011028） |
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| 中文关键词: 大面积网格 人员密度 人员流动速度 疏散时间预测 |
| 英文关键词:Large-scale grid People density Speed of people Evacuation time prediction |
| 摘要点击次数: 173 |
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| 中文摘要: |
| 为了准确预测商场人员疏散时间，文中结合群集流动规律及离散法建立新的大面积网格算法，将时间离散为微小单元 ，空间离散为大面积网格，利用人员流动速度—密度公式，计算每一 时间内网格中人员流动速度，迭代累计各单元时间得到疏散时间。以某商场人员疏散演练为例进行分析，结果表明，大面积网格算法预测的人员疏散时间与实际疏散演习时间基本吻合，其相对误差为3.4%，预测精确度较高。 |
| 英文摘要: |
| In order to accurately predict the mall evacuation time, in this paper, a new large-scale grid method was established based on the cluster flow law and discrete method. The method distracts the time into units and divides the space into large-scale grids. By using mobility rate-density formula, the grid mobility speed in time is calculated. Thus, the evacuation time is obtained by using iterative method with cumulation of the time of all units. By taking a mall evacuation drills for example, the results showed that the time of evacuation drills predicted by the large-scale grid model agrees well with actual evacuation time, with relative error of 3.4%. |
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