Comments 丨 The longest wooden arches in China have been burned, and the protection of ancient buildings still needs to be improved

Wanan Bridge once again encountered a fire, which was really distressed, and once again sounded the alarm to the cultural relic fire prevention.

On the evening of August 6, the national key cultural relics protection units and the longest wooden arcade bridge in China -Fujian Pingnan Wan'an Bridge suddenly fire, and the fire was extinguished at 10:45 pm. At present, the bridge has been burned and collapsed, and there are no casualties for the time being. The specific cause of the fire is under investigation.

Wan'an Bridge is 98.2 meters long and 4.7 meters wide. Not only is it ranked first in the country, the bridge manufacturing process is also extremely superb, and it is the highest in ancient wood arcade bridge in China. However, the fate of Wan'an Bridge is regrettable. Wan'an Bridge was founded in the Northern Song Dynasty. In the forty -seven years of Kangxi in the Qing Dynasty (1708), it was burned. The seventh year of Qianlong (1742) was rebuilt.

In the lives of the locals, the wind and rain corridor bridge is not only a connection and communication facility, but also a place where people rest and avoid rain and rain in the daily life. Wanan Bridge once again encountered a fire, which was really distressed, and once again sounded the alarm to the cultural relic fire prevention.

Most of the ancient buildings in my country are wooden structures. Once a fire occurs, its losses will not be able to make up. Coupled with the beginning of the construction of wooden structures, there are hidden fire safety hazards such as fire -resistant levels, insufficient fire spacing, poor fire pitch, poor fire channels, and serious lack of fire protection facilities. It can be seen that the fire prevention of wooden structures is complex and severe, and fire safety pressure is huge.

According to statistics from relevant national units to deal with ancient building fire accidents, in the past ten years, my country has dealt with more than 150 cultural relic fire incidents, including 21 in 2017, 14 in 2018, 17 in 2019, 17 in 2019, 1220, 1220 rise. It can be seen that with the continuous and in -depth deepening of cultural relics protection projects and the continuous optimization of ancient building intelligent fire methods, the number of ancient buildings has gradually become less, but from the huge economic and cultural losses, it can be seen that ancient buildings, especially wooden structures, are especially wooden structures. The condition of ancient building protection still needs to be improved, and strengthening the work of fire safety in ancient architecture is still very urgent and important.

At present, the best way to fire fire prevention is to install an automatic fire extinguishing system, and the first choice of gas fire extinguishing system. Why not use water? Because water is a kind of damage to the building itself. The error -torch fire alarm and the leakage of pipelines will cause great damage to the ancient buildings itself, especially the functional buildings that preserve a large number of cultural relics. In addition, because the fire of ancient buildings was particularly fast, it was possible to exceed the ability of water sources, so the system of fire extinguishing from water was not reliable enough to ensure the success of the fire extinguishing.

In contrast, the gas fire extinguishing system has many advantages. First, the response is sensitive. Because the gas fire extinguishing system mostly uses higher cost -sensitive components, it is more sensitive than the heat -sensing element that is generally used in the water system, and can perceive the fire 2 to 3 minutes earlier. Second After being lifted, it can be restored to normal immediately; third, as long as the response is timely, the oxygen and gas concentration can be reduced in the closed space to ensure fire extinguishing. However, the cost of gas extinguishing systems is high, and there is a lot of economic pressure on ancient buildings.

Retreating can increase early alarm. Some experts have said that the safety level of a building depends on its distance from the fire brigade, the closer the distance, the more secure. It can be said that the response time of the fire brigade often determines the severity of the fire consequences. This requires the construction of a fire supervision system in ancient buildings to ensure that the fire department and relevant departments can observe and exclude possible safety risks from long -distance. At the same time, it is necessary to improve the level of fire saving of early interference. Most of the reasons that the person who responded for the first time did not respond correctly. In order to avoid the early rescue hands, the quality of the corresponding response should have higher requirements. Usually, the efficiency of fire extinguishing efficiency should be improved through exercise and formulation planning.

Wanan Ancient Bridge reminds us that ancient wooden buildings are precious wealth left over from Chinese civilization. Its historical value, cultural value and social value are unavoidable. Regardless of the consideration, to maximize the overall level of prevention and control of the fire safety of ancient buildings of wooden structures, it has important times and practical significance.

Edit Yin Shuguang

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