What causes mountain collapse?

1. Loose soil

2. Heavy rainfall

3. Natural disasters such as earthquakes and volcanic eruptions can also cause

4. Human-caused

The specifics need to be determined according to the situation at the time.

Take Chongqing as an example

Chongqing Wulong Mountain collapsed. The Jiwei Mountain landslide in Iron Mine Township, Wulong County, Chongqing occurred at 3 pm on June 5, 2009. At least 87 people were buried. After a night of arduous search and rescue, the rescue officers and soldiers found that the part of the mountain that had not collapsed had very obvious cracks, and after on-site analysis, there was still the possibility of a landslide. A landslide in Chongqing has killed 26 people. Local authorities are verifying the identities of the missing persons. At least 87 people were buried in the accident. It is suspected to be related to the brutal mining of ores.

Introduction to the incident

Time: afternoon of June 5, 2009

Location: Jiwei Mountain, Iron Mine Township, Wulong County, Chongqing

Casualties: 87 people were buried and 26 people were found dead

Rescue: 3 buried people have been rescued

Landslide conditions: The landslide is more than 600 meters long and about 40 meters high. , the volume of the collapse was nearly 2 million cubic meters

The on-duty staff of the Iron Mine Township Government revealed that a large-scale collapse occurred in Jiwei Mountain, Iron Mine Township, Wulong County, and almost the entire mountain collapsed. Opposite the Sanlian mining site and 6 residents were completely buried. After preliminary investigation, 50 people in the mining site and 9 residents were buried under the mountain. Mountain collapse has caused widespread power outages and phone outages in the iron ore township.

A second collapse occurred at the Wulong landslide site in Chongqing, and the on-site command headquarters has retreated 2 kilometers. The on-site headquarters of the Wulong mountain collapse accident in Chongqing was informed that the preliminary estimate of the area of ????the mountain collapse was between 1.4 million and 3.5 million cubic meters. Because the collapsed mountain was right between the two mountains, a large amount of rock and soil caused a serious impact on the opposite mountain range, which may cause another landslide.

Wulong County People’s Hospital learned that after the landslide, Wulong County People’s Hospital had urgently mobilized 8 doctors, 3 nurses, 2 key hospital leaders, and 3 ambulances to rush to the scene of the incident. . Since the landslide has blocked the road, medical staff are rushing to the scene from another road. It is estimated that they will arrive at the scene of the accident in half an hour. At the same time, the fire department also mobilized its forces to rush to the scene for rescue. After the collapse, the relevant leaders of Wulong County rushed to the scene with relevant departments to guide rescue and rescue operations. Jiwei Mountain has experienced many landslides and collapses.

Doubtful points

The on-site command headquarters has formulated a rescue plan and the forward rescue work is in full swing. However, there are many versions of speculation about the cause of the accident, and there are several major doubts that need to be solved.

Doubt 1: Whether over-exploitation caused the landslide

The iron mine was formerly called Sanlian Iron Mine. It was a state-owned enterprise that was restructured about ten years ago and was run by three people. Same contract. The daily output of iron ore is about 100 tons. Around 2000, due to dangerous cliffs in the mining area, the local government issued a notice to suspend production. However, the three bosses were greedy for profit and over-exploited, and cracks began to appear in the mountain. The reporter used the head of the Propaganda Department of the Wulong County Party Committee to find the phone number of the director of the County Safety Supervision Bureau to verify the problems reported by the villagers. The person in charge said that there were too many rescuers and he could not contact him.

Doubt 2: There are different opinions on whether there is a mining and safety license

A staff member of the Mineral Resources Management Office of Wulong County Land and Resources Bureau said that the iron mine may have a mining license and safety production license, but he couldn't be sure. The government has repeatedly ordered the iron ore mine to stop production, but the iron ore mine has turned a deaf ear and believes that the sky is high and the emperor is far away. It is still producing illegally without authorization. It is impossible to have a mining license and a safety production license. The miner said that their monthly income was only about 1,500 yuan, and the boss did not apply for work-related injury insurance for the miners in accordance with relevant laws and regulations. The deputy mayor in charge of safety in the township is also in charge of industrial economy, investment promotion, urban construction, land and resources, politics and law, road transportation, etc., and often fails to handle safety inspections in mines.

Doubt 3: Is over-exploitation of iron ore the primary culprit of ecological damage?

In the non-coal mine safety development plan of Wulong County, we learned that mines in the county occupy, destroy, and pollute land , serious water and soil erosion, forest vegetation was destroyed, all mines did not carry out land reclamation and mine remediation after they were closed, and flying dust and noise generated during production and transportation were directly discharged into the atmosphere, causing air pollution.

On the way to the accidental iron mine, I often saw downed trees lying on the roadside, and the dust kicked up by passing vehicles blocked the sky. A staff member of the Mineral Resources Management Office of the Wulong County Land and Resources Bureau told reporters that the supporting timbers used in the iron mine accident were basically cut from the mountains and forests, which had a certain impact on the ecology.

Reference materials

Tencent:/a/20090609/000014.htm