Up to now, 118 people have lost contact with each other in Maoxian County, Sichuan Province. The list has been published to pray for them. When natural disasters come, it is more important to pay attention to protection. Which areas are prone to landslides and mudslides in China? Southwest is the most concentrated area with the highest frequency of landslides.
The landslides in China are mainly distributed in Southwest Sichuan, Yunnan, Guizhou, Tibet, northwest Shaanxi, Gansu, Shanxi, as well as Central South, Southeast Fujian, Hunan, Hubei and other regions. In the above-mentioned provinces, most of the landslides are distributed in groups, pieces and strips, while in the rest areas, there are less landslides, even if there are landslides, they are scattered.
The basic characteristics of the distribution of landslides in China are: more in the West than in the East, more in the South than in the north. (this article is exclusively compiled by WYH, editor of sihai.com. If you need to reprint it, please indicate the source and source. Related article link: http://www.4hw.com.cn/life/zone.html)
Causes:
First of all, continuous atmospheric precipitation or rainstorm is the most typical factor;
Second, the freezing and thawing in spring is also one aspect.
The third is earthquakes, which can cause collapses, landslides, river dam failures, and the collapse of volcanic deposits. (this article is exclusively compiled by WYH, editor of sihai.com. If you need to reprint it, please indicate the source and source. Related article link: http://www.4hw.com.cn/life/zone.html)
In addition, there are many human factors, such as road construction and house building, which make the original stable slope unstable; development and mining will cause surface cracking, to a certain extent, landslide will occur, and the slag left will become debris flow when encountering rain. In the process of reservoir impoundment, dynamic and static pressure or buoyancy force will be generated in the main slope due to the change of water level rise and fall, which will also cause landslide disaster. Therefore, the construction of hydropower stations, projects, roads and railways, and the exploitation of oil and natural gas will lead to surface deformation and landslides and mudslides.