Landslide in Qiongzhong, Hainan caused 3 deaths and 4 injuries! Heavy rain caused secondary disasters and risk avoidance guide, remind everyone

Affected by the remnant vortex and cold air of Typhoon No. 20 "Trami" this year, many places in Hainan Province have experienced continuous heavy rainfall.

On the morning of October 30, a landslide occurred in Chongdalin Village, Shireng Village Committee, Changzheng Town, Qiongzhong Li and Miao Autonomous County, killing three people . According to the situation report released by the Qiongzhong Li and Miao Autonomous County Emergency Command on the same day, the four injured people who were not trapped at the scene were sent to the hospital for treatment in time and are no longer in danger.

A landslide refers to a phenomenon in which soil or rock layers slide downward along a certain soft surface as a whole or in a dispersed manner under the action of gravity under the influence of natural and man-made factors such as river scouring, earthquakes, groundwater activity, rain soaking, storm surges and artificial slope cutting.

Signs of a landslide

1. There are obvious cracks on the slope, and the cracks have lengthened and widened in recent times.

2. At the foot of the hillside, the soil suddenly rises.

3. Cracks appeared in the floors and walls of houses built on the hillside, and the walls were tilted.

4. Abnormalities occur at the spring points on local slopes and the entire slope. On the hillside, dried-up springs suddenly revive or the springs suddenly dry up and become turbid.

5. Animals become abnormally frightened, trees suddenly wither or tilt, etc.

How to avoid danger when encountering a landslide?

Stay calm and quickly escape to the high ground on both sides of the landslide direction. Never escape in the direction of the slide, and find a safe area around as soon as possible;

When you are unable to escape, you should quickly hold onto a fixed object such as a tree nearby or hide under a solid obstacle.

After a landslide occurs, you should also pay attention to:

Do not re-enter the area where the landslide has occurred to search for lost property;

After the landslide stops, do not return home to check the situation immediately. Landslides can occur repeatedly, and returning home rashly may result in a second landslide.

Immediately report the disaster to the relevant government departments or units.

Why was Hainan hit by heavy rains in autumn?

According to Chen Hong, chief forecaster of the Hainan Provincial Meteorological Observatory, this heavy rainfall weather process is a typical Hainan autumn rainstorm, caused by the combined influence of the remnant vortex of Typhoon "Trami" and cold air . Chen Hong said that September to November is the autumn flood season in Hainan. After September every year, the subtropical high pressure begins to weaken, the mid-latitude westerly trough takes the opportunity to come, and the cold air quietly presses south to southern China. Although the cold air at this time often cannot stir up any big waves, it also has a certain influence. At this time, the summer monsoon in the South China Sea retreats very slowly, and the tropical system is still active here. As a result, cold and warm air frequently converge here, and it is very easy to form a low-altitude easterly jet stream, resulting in frequent extreme precipitation events.

Wu Shengan, chief forecaster of the Hainan Provincial Climate Center, said that the geographical distribution characteristics of Hainan's heavy rainstorms during the autumn flood season are very obvious. In terms of spatial distribution, due to the topography, the rainstorms are more in the east and less in the west. In terms of time scale, the frequency of rainstorms of different levels is the highest in October. Regardless of the number of days the rainstorms last or the frequency of occurrence, their intensity gradually increases from September to October, and after entering November, the intensity rapidly decreases.

Continuous heavy rainfall

It is very likely to cause waterlogging, landslides,

Secondary disasters such as floods, debris flows, collapses, and mud-rock flows

What are the signs of a disaster?

How to avoid risks and protect yourself?

Comprehensive sources: Ministry of Emergency Management, China News Network, China National Radio, etc.