Fire Growth and Acceleration
Fire Growth and Acceleration
复制标题
火势蔓延和加速
DOI：
10.1071/wf9970001
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发表时间：
1997
影响因子：
3.1
通讯作者：
J. Gould
中科院分区：
文献类型：
--
作者：
N. Cheney;J. Gould
文献中“增长”和“加速”这两个术语的使用似乎不一致，我们认为这种不一致阻碍了我们对火灾早期阶段行为的理解。火灾从点着火发展到某种平衡状态以及相关的火灾规模和强度的增加被不同地称为火灾增长（Pyne 1984）；积累（Luke 和 McArthur 1978）；或火灾的加速阶段（Chandler et al. 1983）。更具体地说，“加速阶段”被用来描述从点火到准稳定传播速率的传播速率的增加（Luke和McArthur 1978，McAlpine和Wakimoto 1991）。显示不同燃料和天气条件下扩散率增加的特征曲线（Luke 和 McArthur 1978）。 Cheney 和 Bary (1969)、Van Wagner（未发表）以及 McAlpine 和 Wakimoto (1991) 提出了描述这些曲线的假设模型。它们被称为加速曲线和加速模型。然而，增长和加速这两个术语代表了不可互换的不同概念。我们想澄清这些概念并讨论对消防管理者的实际影响。
The use of the terms "growth" and "acceleration" appears to be inconsistent in the literature and we believe this inconsistency has hindered our understanding of behaviour in the early stages of a fire. The development of a fire from a point ignition to some equilibrium state and the associated increase in fire size and intensity has been referred to variously as the fire growth (Pyne 1984); build-up (Luke and McArthur 1978); or acceleration (Chandler et al. 1983) phase of the fire. More specifically the "acceleration phase" has been used to describe the increase in rate of spread from ignition to a quasi-steady rate of spread (Luke and McArthur 1978, McAlpine and Wakimoto 1991). Characteristic curves showing the increase in rate of spread are illustrated for different fuel and weather conditions (Luke and McArthur 1978). Hypothetical models to describe these curves have been proposed by Cheney and Bary (1969), Van Wagner (unpublished) and McAlpine and Wakimoto (1991). They have been called acceleration curves and acceleration models. The terms growth and acceleration, however, represent different concepts that are not interchangeable. We would like to clarify these concepts and discuss the practical implications for fire managers.