| 尤飞,周建军,张昱春,李元洲.大空间建筑火灾中烟气层界面的一种判定[J].火灾科学,2000,9(4):58-65. |
| 大空间建筑火灾中烟气层界面的一种判定 |
| One Judgement On Smoke Layer Interface of Building Fires With Large Space |
| 投稿时间：2000-07-20 修订日期：2000-09-10 |
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| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目: |
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| 中文关键词: 摄像 烟气层界面 时间截取法 大空间建筑火灾 |
| 英文关键词:Camera Shot SLI ITTP Large Building Fire |
| 摘要点击次数: 674 |
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| 中文摘要: |
| 采用摄像机拍摄大空间建筑内烟气运动的整个过程 ,从录像中获取烟气前沿和主体下降到各指示灯的时间 ,经时间截取法处理后得到烟气层界面形成及运动的实际时间 ,求烟气层高度x对该时间t的关系可得烟气运动曲线。把该曲线与采用热电偶测温法及目测法的结果进行对比可知 ,三者趋势较为吻合 ,表明摄像这种测量手段能较好地反映大空间建筑火灾中烟气流动的状况及部分运动规律。 |
| 英文摘要: |
| Shoot the whole movements of smoke in a Large Building Fire with a pickup camera, and get the time evaluation when front edge and main body of the smoke arrive every indicative lamp. Using a new method forwarded as Interception between Two Time Points(ITTP)you can get the real time "t" when the Smoke Layer Interface (SLI) forms and moves. Then a smoke movement curve is available while seeking relationship between Smoke Layer Height "x" and Time "t". Comparing with the results by Thermocouple Temperature Measuring and Eyeballing,their tendency complies well with one another. So Camera Shot is a creditable method which reveals the conditions and partial laws of movements of smoke in a Large Building Fire. |
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