關于消火栓保護半徑的討論
來源：http://www.xintli.net/ 日期：2023-03-21
我們在實際的消火栓布置時，經常會說按行走距離28m、29m或者30m來作為估算標準，那么消火栓的具體保護半徑到底是多少呢？是不是僅僅就按這個標準布置消火栓就可以了？下面
川消小編為您分析：
In the actual layout of fire hydrants, it is often said that the walking distance of 28m, 29m, or 30m is used as the estimation standard. What is the specific protection radius of fire hydrants? Is it enough to just arrange fire hydrants according to this standard? The following is an analysis by Sichuan Xiaobian:
三、我們來一組計算：
3、 Let's calculate:
1、我們根據公式來計算消防龍帶的行走長度：Ld*k=25*（0.8～0.9）=20～22.5m
1. We calculate the walking length of the fire hose according to the formula: Ld * k=25 * (0.8~0.9)=20~22.5m
2、充實水柱投影保護距離：
2. Full water column projection protection distance:
（1）栓口10米充實水柱時：10/1.414=7.07m；（2）栓口13米充實水柱時：13/1.414=9.19m
(1) 10/1.414=7.07m when the water column is filled at 10m from the hydrant opening; (2) When the water column is filled with 13 meters from the hydrant opening: 13/1.414=9.19m
3、消火栓大保護距離：
3. Large protection distance of fire hydrant:
（1）栓口10米充實水柱時：22.5+7.07=29.57m；（2）栓口13米充實水柱時：22.5+9.19=31.69m
(1) When the water column is filled with 10m from the hydrant opening: 22.5+7.07=29.57m; (2) When the water column is filled with 13 meters of hydrant opening: 22.5+9.19=31.69m
四、那么29.57m或31.69m就是我們布置消火栓終的依據嗎？小編覺得還有2個問題需要討論：
4、 Is 29.57m or 31.69m the basis for arranging the fire hydrant terminal? The editor believes that there are still two issues to discuss:
1、消火栓水龍帶到防護的房間門口距離是否需要控制？
1. Is it necessary to control the distance from the fire hydrant hose to the door of the protected room?
顯而易見，消火栓水龍帶到防護房間門口的距離是需要控制的，而且是必須控制的。如果龍帶有效長度不能拉到門口，那么充實水柱就無法保護門內的空間，也就沒有辦法有效滅火。當然還有一種情況就是房間進深較小，雖然龍帶不能拉到門口，但是滅火人員可以站在門外通過充實水柱直接進行滅火（這種情況一般不）。
Obviously, the distance from the fire hydrant hose to the door of the protective room needs to be controlled, and must be controlled. If the effective length of the dragon belt cannot be pulled to the door, then a substantial water column cannot protect the space inside the door, and there is no way to effectively extinguish the fire. Of course, there is also a situation where the depth of the room is relatively small. Although the dragon belt cannot be pulled to the door, the firefighter can stand outside and directly extinguish the fire by filling the water column (this situation is generally not recommended).
2、消火栓的實際充實水柱是否可以作為消火栓布置的依據？
2. Can the actual filled water column of the fire hydrant be used as a basis for the layout of the fire hydrant?
對于某些特殊的房間（如工業建筑涉及工藝要求房間等），消火栓不允許進入房間內，但是按照規范充實水柱長度又沒辦法全保護，這種可以通過實際充實水柱的計算與相關審查人員進行討論。
For some special rooms (such as industrial buildings with process requirements, etc.), fire hydrants are not allowed to enter the room, but the length of the water column can not be fully protected according to the specifications. This can be discussed with relevant reviewers through the calculation of the actual water column.
在栓口壓力0.35MPa時，消火栓實際保護半徑：22.5+19/1.414=35.94m，而規范計算的消火栓保護半徑：22.5+13/1.414=31.69m。兩者差值達到4.25m。
When the pressure at the hydrant port is 0.35MPa, the actual protection radius of the fire hydrant is 22.5+19/1.414=35.94m, while the protection radius calculated by the specification is 22.5+13/1.414=31.69m. The difference between the two reaches 4.25m.
五、通過以上的討論我們得出以下結論：
5、 From the above discussion, we can draw the following conclusions:
1、消火栓終保護距離需雙重校核：
1. The final protection distance of the fire hydrant needs to be double checked:
（1）需校核消火栓龍帶到防護房間門口距離不大于22.5m；
(1) It is necessary to verify that the distance from the fire hydrant belt to the door of the protective room is not greater than 22.5m;
（2）需校核消火栓不利點處的保護距離。
(2) The protection distance from the fire hydrant to the unfavorable point needs to be checked.
2、特殊情況下可采用實際充實水柱作為設計依據（需與審查人員溝通）。
2. In special cases, the actual enriched water column can be used as the design basis (communication with reviewers is required).
That's all for the discussion on the protection radius of fire hydrants. If you have any doubts or needs about this, please come to our website http://www.xintli.net Consult!
