- 1
新聞資訊
什么是煙囪效應(yīng)？
發(fā)布日期：2016-11-21 14:51:04瀏覽量：1594
作用：日常做好管井防火工作，保持樓道防火門常閉，避免出現(xiàn)“煙囪效應(yīng)”。逃生中遇到被煙封鎖的樓道千萬不要進去。
作用：日常做好管井防火工作，保持樓道防火門常閉，避免出現(xiàn)“煙囪效應(yīng)”。逃生中遇到被煙封鎖的樓道千萬不要進去。
在火場逃亡過程中，如果你看到樓道內(nèi)充斥著濃煙，千萬不要進去，那是因為樓道內(nèi)很可能形成了“煙囪效應(yīng)”，已經(jīng)不再安全。
在消防術(shù)語里，“煙囪效應(yīng)”是指著火后底樓燃燒產(chǎn)生的有毒氣體和熱空氣，經(jīng)過建筑內(nèi)部的電梯井、管道井或樓道這些“煙囪”迅速向上蔓延。上海市消防局曾經(jīng)做過一個實驗：一座高度為100米的建筑（約30層），在無阻擋的情況下，煙氣順豎向井管擴散到頂層只需要30秒，瞬間整棟建筑形成“立體火場”，不但撲救困難，樓內(nèi)人員也難以自救逃生。
建筑物越高，“煙囪效應(yīng)”越明顯。因此高層建筑內(nèi)的樓梯間、電梯井等直通最高層的豎向井道在建造時一定要做好防火處理，還要注意不要讓常閉式防火門長期敞開，否則這些地方在發(fā)生火災(zāi)時會成為火勢迅速蔓延的“煙囪”。人員逃生時也要注意逃生的樓梯間是否已經(jīng)成為“煙囪”，盲目進入火場可能吸入過量煙氣中毒身亡。
關(guān)鍵詞：消防水炮|大空間水炮
上一頁：什么是爆炸極限？
下一頁：織物纖維阻燃性能分析
{"img":"","passBy":"0","picBd":"0","size":"1","bdSize":"1","cwidth":104,"cheight":104,"picBdRadio":"0","borderType":"solid","jump":"0","definedUrl":"","isPicBd":"0","effectBdLine":"solid","image":"http://oss.xinghuo86.cn/726643245056109/721760395722799.png","picWidth":"104","picHeight":"104","inpColor":"#000000","color":"#000000","type":0,"effectBdColor":"#000000","hasEdit":true}
{"img":"","passBy":"0","picBd":"0","size":"1","bdSize":"1","cwidth":104,"cheight":104,"picBdRadio":"0","borderType":"solid","jump":"0","definedUrl":"","isPicBd":"0","effectBdLine":"solid","image":"http://oss.xinghuo86.cn/726643245056109/721760395722798.png","picWidth":104,"picHeight":104,"inpColor":"","color":"#000000","type":0,"effectBdColor":"#000000","hasEdit":true}
{"img":"","passBy":"0","picBd":"0","size":"1","bdSize":"1","cwidth":104,"cheight":104,"picBdRadio":"0","borderType":"solid","jump":"0","definedUrl":"","isPicBd":"0","effectBdLine":"solid","image":"http://oss.xinghuo86.cn/726643245056109/721760395722800.png","picWidth":"104","picHeight":"104","inpColor":"#000000","color":"#000000","type":0,"effectBdColor":"#000000","hasEdit":true}
地址
廣東省佛山市南海區(qū)桂城街
道夏南二工業(yè)區(qū)
電話
0757-81284002
傳真
0757-81284005
{"img":"","passBy":"0","picBd":"0","size":"1","bdSize":"1","cwidth":20,"cheight":30,"picBdRadio":"0","borderType":"solid","jump":"0","definedUrl":"","isPicBd":"0","effectBdLine":"solid","image":"http://oss.xinghuo86.cn/726643245056109/721760395722801.png","picWidth":20,"picHeight":20,"inpColor":"#000000","color":"#000000","type":0,"effectBdColor":"#000000","hasEdit":true}