What is the phenomenon of landslides and what is landslides?

The phenomenon that a large number of soil and rock masses on the slope slide downwards along a certain sliding surface under the action of gravity is called landslide.

Landslides mainly occur in soil layers that are prone to hydrophilic softening and in some soft rocks. Landslides are also prone to form when there are weak surfaces in the hard rock formations that are conducive to sliding. Layers, interlayers, interlayer faults, fault planes, fracture surfaces, etc., which are buried in the soil or rock mass that tend to be consistent with the slope, are prone to form landslides.

Due to the immersion of water, the sliding surface reduces the frictional resistance, and also increases the weight of the landslide body, especially in the place where there is spring water under the sliding surface, it is easier to form a landslide.

Others, such as: weathering, precipitation, unreasonable loading by man, erosion of surface water on the foot of the slope, etc., are also the reasons for the formation of landslides.

There are three main reasons: first, the loss of China's propaganda position; second, the improvement of the overall living standards of the Chinese people, but the gap between rich and poor countries; Third, the values of the Chinese? Missing.

Since China has lost its propaganda position, the traditional virtues of the Chinese nation should not be the dominant mainstream cultural propaganda land, but some non-mainstream cultures have occupied the propaganda position. In this situation, coupled with the continuous improvement of the overall level of the living Chinese, the gap between rich and poor countries is too much, and the land of rich material life and spiritual life without parole, non-mainstream culture must be used and occupy people's spiritual life. Together, led to the values of the Chinese?

People are missing. Causing people not to know what is beautiful and what is ugly, good and evil are unknown, right and wrong are distinguished, and the abundance only knows how to eat and drink, so far, **, look down on the poor, poverty becomes a stronger hatred of the rich psychology ** The distrust is getting stronger and stronger. There are clearly two camps.

** of money; The poor and the rich cross these two camps and are put to the double test of **. The above is "skeleton", "meat" or fill in your own right. ]

Are you talking about hazards, hazards include the destruction of transportation facilities, the displacement or inundation of villages, the displacement of people, mudslides].

Landslides are one of the most common geological hazards, especially in areas with loose strata.

What is a landslide, a landslide refers to the phenomenon that the soil or rock mass of the slope is out of balance due to water, gravity and man-made factors and slides along a certain slope surface as a whole. This part of the rocky soil accumulation is called the landslide body. The lithology of the landslide body is soft and broken, generally loess, gravel, gravel, etc., some of which are residual slope deposits on the slope, and some are flood deposits brought by floods.

In addition to the steep terrain slope and soft lithology fragmentation, the most important factor for the occurrence of landslide phenomenon is the activity of groundwater. Due to the infiltration of groundwater, a certain vertical position of water is formed on the contact surface between the shallow soil layer or gravel accumulation and the hard impervious rock mass, and the water is continuously discharged outward, forming a concave surface. Under the long-term infiltration of groundwater, when the weight of the soil is out of balance due to excessive water content, and the friction of the contact surface is reduced due to the water, the rock and soil accumulation slides down the slope and forms a landslide.

Landslide refers to the soil or rock mass on the slope, which is affected by groundwater activities, river erosion, rainwater immersion resistance and other factors, and under the action of gravity, along a certain weak surface and weak zone, the overall natural Xianchang file image that slides down the slope as a whole.

Landslides occur for many reasons, both internal and external. The internal factors of landslide occurrence mainly include the rock properties of the slope strata, the geological structure and internal structure of the slope. Extrinsic factors refer to factors such as surface and groundwater activities, artificial slope cutting or loading, and vibrations that contribute to the loss of slope stability. Human activities, such as the construction of railways, roads, bridges, tunnels, dams, and reservoirs, can contribute to landslides.

In addition, ** is also one of the important factors that induce landslides.

Landslide refers to the geological phenomenon that the soil or rock mass on the slope, affected by factors such as river erosion, groundwater activity, and artificial slope cutting, slides down the slope as a whole or scattered under the action of gravity, along a certain weak surface or weak zone, commonly known as "ground slip", "walking mountain", "mountain collapse", "mountain peeling", "soil slipping", etc. (Fig. 1 4).

Fig.1-4 Schematic diagram of landslide.