Geological experts in the Sichuan earthquake disaster area have obvious rainfall the day after tomorrow: Geological disasters are prone to these areas

At 12:52 on September 5, a magnitude 6.8 earthquake occurred in Luding County, Ganzi Prefecture, Sichuan.

The latest news, at 16:00 on September 6, the Sichuan Provincial People's Government, the Sichuan Provincial Department of Emergency Management, and the Sichuan Earthquake Administration jointly held a press conference in Moxi Town, Luding County. The conference reported that the earthquake had killed 66 people, including 38 people in Ganzi Prefecture, 28 people in Ya'an City, and 15 others lost contact.

This epicenter is located in the mountains, bringing obvious landslides.

At 12:5:00 on the 6th, when China Anneng rescued team members on the road from Luding to Moxi Town, the aftershocks occurred again, and a large area of ​​landslides appeared on the mountain. It is reported that the aftershocks at the scene continued, and there were falling rocks from time to time.

What is the terrain near the epicenter? What geological disasters may cause? How to pay attention and prevent? Emergency Jun specially sorted out relevant information and interviewed Vice President of Chengdu University of Technology, Professor Xu Qiang, executive deputy director of the National Key Laboratory of Geological Disasters and Geological Environmental Protection.

Earthquake induces geological disaster spatial distribution probability prediction

After the earthquake, the research team of strong earthquake geological disasters in the National Key Laboratory of Geological Disaster and Geological Environmental Protection of Chengdu University of Technology used the prediction of geological disasters to induce geological disasters to induce geological disasters to induce geological disasters to induce geological disasters to induce geological disasters to induce geological disasters in the early stage.

Sichuan Luding earthquake induces geological disaster space distribution probability prediction results

The results showed that due to the influence of this earthquake, earthquakes in the southeast of the earthquake have the highest probability of geological disasters.

Among them, the roads along the seismic to Wanggangping Scenic Area are likely to be affected by geological disasters along the road.

In addition, the probability of geological disasters in the surrounding areas of Moxi Town, Luding County, such as Lengxun Town, Daba Village and other geological disasters is also high;

National Highway 318 Luding section, Lengyu Town, and Moxi Town have collapsed along the number of township roads, and have a greater impact on traffic;

There are many landslides such as Niubishan Bridge, Dam Village, Shiyueheba, and Wanggang Ping. The model prediction results are more consistent with the actual situation of the scene in these areas.

The types of geological disasters may be mainly based on high collapse and landslides, and a small amount of large -scale deep landslides may occur locally.

Remote sensing image before the earthquake in Luding in Sichuan

Xu Qiang said that this diagram mainly predicts that the probability of geological disasters in this earthquake in this earthquake is high to facilitate the guidance of earthquake relief.

The earthquake has ended. During the disaster relief process, focusing on geological disasters, especially the landslide, collapse, and mudslide disaster caused by rainfall. Luding is a mountain canyon area, and geological disasters are relatively serious.

There will be obvious rainfall in the Sichuan earthquake -stricken area for the next day

There are heavy rain

Xu Qiang reminded that "West China Autumn Rain" is a special weather phenomenon in autumn in the southwestern region of my country. This year's West China Autumn Rain has begun. The intensity of this autumn rain rain is not particularly large, often drizzle, but it is characterized by a long duration. Xu Qiang reminded that pedestrians or vehicles on the road should pay attention to, be careful of local collapse and falling rocks.

According to the Central Meteorological Observatory, on September 5, light rain appeared in Luding County, Ganzi Prefecture, Ganzi Prefecture, Sichuan. At 8 o'clock on the 6th, the temperature of Luding County was 15 ° C and 17 ℃. It is expected that on the 6th, the clouds of clouds in the clouds of Luding County and Ashaima Prefecture will be cloudy; there will be obvious rainfall process from the 7th to 8th. The rainfall is mainly rainy, and heavy rain.

Meteorological experts remind that there is a significant rainfall in the Sichuan earthquake area from the 7th to 8th. The unfavorable impact of on -site staff and transportation. In addition, along the Sichuan -Tibet Railway, it is necessary to strengthen the inspection of hidden dangers of geological disasters to prevent adverse effects on construction personnel, engineering construction, and material transportation. Mountain flood mudslides and landslides before the occurrence

What signals?

Xu Qiang said that there will be some precursors in any event, and we can use these signals to escape and protect our lives.

There will be several characteristics before the flood mudslides occur <

● First of all, rainfall is a necessary condition for mudslides. We must not only pay attention to the rainfall of our place, but also need to pay attention to the rainfall forecast in the upstream direction of the ravine river. Therefore, we need to pay more attention to meteorological forecasts. Without rainfall, it is impossible to produce mudslides.

● Secondly, pay attention to the changes in water. If the color of the water in the surrounding waters changes, it is likely that there is a strong rainfall in the upstream. Once the water volume suddenly begins to grow, it means that there is abnormalities in the upstream area, and they must escape quickly.

● Before the large flood is coming, there will be a bombardment. If we hear the sound of "rumbling" in the distance, we may need to be prepared in advance.

And the landslide will also have some signs before it happens-

Generally, there will be a situation where local blocks continue to fall before large -scale landslides.

● "Big Slips and Great" often has "Little Lumps and Small", which is a universal characteristic. When we were driving in the mountains, we saw that there was a stone drop on both sides of the highway, so we needed parking to observe whether there was a stone continued to fall. After waiting for more than ten minutes, if no stone continues to fall, you can continue to move forward. If the stone is still falling, it means that there may be large landslides that may appear.

● "Deformation" will occur before the landslide of the landslides. For example, trees start to crooked, soil bulging, house cracking, etc. The surface is deforming, which means that it may be landslide.

● At the same time, we also need to pay attention to changes in surface water. The groundwater is connected. If the water source suddenly becomes larger or decreased, and the water quality is abnormal, it means that there may be a risk of landslides around the surroundings.

Source: China Emergency Management

- END -