[Home Security] There are so many hidden dangers

July 6, 2017 morning, Minhang District, Shanghai underground car park of a supermarket, the very fact that the child was two years old with a masked man with a knife threatened in their own private cars, was robbed of more than 5,000 yuan in cash;

June 7, 2017, in Nanning City, Guangxi Zhuang Autonomous Region Vientiane City parking lot, a man with a knife the driver suffered a robbery, the man went to the parking lot the next day, was caught shopping mall security ......

In recent years, there have been security incidents from time to time in large office buildings, supermarkets in shopping malls and underground parking lots in residential communities. Why such security incidents have occurred when? How to prevent?

There are many hidden dangers in law and order

1 to facilitate outsiders to enter

In a certain district of Zhenghai Road in Zhengzhou, a block bar is placed on the ramp at the entrance of the underground parking lot, and the parking lot is free to enter the parking lot through the gap on one side of the block; the other block is set at the entrance of the underground parking lot, but the property Public security personnel from the side of the barrier to enter the underground parking lot did not block.

In this way, the underground parking lot, which should have brought convenience to the owners, could easily be accessed by outsiders due to loopholes in management. The underground parking lot, one step away from home, has become the scene where various robbery and theft cases are frequently staged.

2 Over-draw parking spaces blocking safety passages

Residents of Desheng Jiayuan Community in Beijing’s Xicheng District once reported to Beijing’s non-emergency rescue service center 12345 that there were potential safety hazards in the new parking spaces in the underground garage.

There are 178 parking spaces in the underground garage of the community , but there are actually more than 280 parking spaces. Some of these parking spaces are located in front of traffic lanes or safety exits, and there are safety hazards.

3 There is a monitoring blind spot from the parking garage to the elevator entrance

There are many monitoring probes in many parking lots, but they are mainly concentrated in the entrances and exits, and some of them are not opened or damaged. The monitoring blind spots are not uncommon in the parking lot. Ms. Xu told reporters that at night she went alone to the parking lot to drive or stop, and the dark passageway leading to the parking lot through the negative underground lift was always on tenterhooks.

4 fighting vehicle slope slippery and difficult to control

Many underground garages are dug deeper, resulting in steeper slopes. For steep drivers or unfamiliar drivers, steep slopes increase driver difficulty. At the same time, the road surface of the parking lot is not like the road. The rough friction is large, but it is very smooth. With one foot braked, due to inertia, it is not easy to stop immediately. At the same time, the route in the garage is complex, and drivers who don't come often often get lost.

Fire hazard

In addition to security risks, underground parking is still a high fire area.

1 at 22:15 on July 27, Zhejiang Province, Ningbo Zhenhai Fire Department Alarm, located in Zhenhai Fairview South high-level Mainland Parking area under fire;

2 On the morning of June 8 , the underground parking lot of Qingyi Garden in Fuxing Road, Hangzhou City, Zhejiang Province caught fire;

3 On the afternoon of February 22 , the underground parking lot of Building 3 of Hexinyuan Community near the intersection of Yueyang Road and Xi’an Road in Heping District, Tianjin City, suddenly emitted heavy smoke. Many fire engines arrived at the scene to extinguish the fire...

According to industry insiders, the large underground parking lot has a small vent area, and the heat dissipation performance is relatively low. Therefore, in the event of a fire, the heat dissipation is slow. The internal temperature of the underground parking lot rises faster and the indoor air volume increases. It is relatively fast, which leads to an increase in the pressure in the room. In addition, the underground parking lot of large-scale commercial buildings has a large space. The upper, lower, left, and right rooms are connected together. The interior decoration of automobiles is made of polyurethane-based synthetic materials and is easy to burn. In the event of a fire, the fire will quickly spread and cause serious fire accidents.

In addition, the underground parking lot of large underground commercial buildings is prone to “flashing” when there is a fire. When the fire spreads further, the indoor air components will also change, and the indoor temperature will continue to rise, resulting in greater indoor pressure. The original air flow direction changes and increases the pressure of wind flow. After a part of the air pressure reaches the exit, it will return to the interior with the fresh air in the mouth and flow in the opposite direction, thus expanding the fire and causing a greater fire hazard.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.