This Gansu Jishi Mountain 6Level 2**, the epicenter is 5 kilometers away from the provincial border of Qinghai Province, and Qinghai has a strong sense of multi**.
In Jintian Village, Zhongchuan Township, Haidong City, Qinghai Province, a local sand surge was triggered by **, what is a sand surge?Where does the sand surge come from?Why is it so destructive?Let's listen to the introduction of Han Yanyan, senior engineer of China's leading Taiwan Network Center.
Strong earthquakes can easily cause sand surges.
Han Yanyan, Senior Engineer of China's ** Taiwan Network Center: After many big ** occur, there will be the so-called "sand surge phenomenon". After a strong earthquake, due to the shaking of the earth's crust, the water-bearing sand deep underground will undergo a strong liquefaction phenomenon, and this liquefied sand layer will be squeezed along a certain channel, and it will directly reach the surface, forming the "sand surge phenomenon" we see.
The amount of sand gushing is related to the water content of the aquifer and the degree of extrusion deformation.
Han Yanyan, Senior Engineer of China's ** Taiwan Grid Center: In the process of its extrusion and deformation, there may be more aquifers underground. Sand swells occur during the extrusion process, which is related to the water content of the underground aquifer and the degree of extrusion deformation, so there may be more or less phenomena. There are more sand surges, which does not necessarily mean that the follow-up may be bigger**;If there is no sand surge, it does not mean that the back is safe;This is not directly related, it is just a normal phenomenon.