What is the difference between the conditions under which a mudslide and a landslide occurs

Because there is no large amount of water at the ridge in a short period of time, mudslides cannot be formed. In addition, the dense contour line indicates that the slope is steep.

To put it simply, landslides and debris flows are manifestations of gravitational geomorphological processes on the surface. Landslides can be a mixture of soil and water, such as landslides induced by heavy rainfall; It can also be the movement of a separate soil, which does not necessarily require the participation of water, such as the landslide induced by **; Debris flow must involve the participation of water, that is, the debris flow must be a movement process of soil and water mixture.

Debris flow is a special torrent in a mountainous valley that is triggered by water sources such as heavy rainfall and water and snow meltwater, and contains a large amount of sediment and stones. It is characterized by sudden eruptions, with turbid fluids rushing forward and back along steep ravines, rushing and roaring down, shaking the ground and thundering valleys. In a very short period of time, a large amount of sediment and stones are washed out of the ditch, and they are rampaged and piled up in a wide accumulation area, which often causes major harm to human life and property.

Landslide refers to the natural phenomenon that the soil or rock mass on the slope is affected by factors such as river erosion, groundwater activity, and artificial slope cutting, and under the action of gravity, along a certain weak surface or weak zone, as a whole or scattered, down the slope. It is commonly known as "walking the mountain", "breaking the mountain", "slippery ground", "slippery" and so on. Landslide is the slip phenomenon of slope rock and soil along the habitual shear failure surface.

The mechanism of landslide is caused by the shear stress on a certain slip surface exceeding the shear strength of that surface.

Landslides and mud and rocks are friendly to the stream.

It is mainly distributed in Sichuan, Yunnan, Guizhou, and the western Tibetan region in the southwest, Shaanxi, Gansu, and Shanxi regions in the northwest, as well as Fujian, Hunan, and Hubei in the central and southeastern regions.

Or continuous rainfall, which loosens the rocks of the mountain, and landslides and debris flows are prone to occur.

The whole process of landslides and debris flows is generally only a few hours, and the short is only a few minutes, which is a kind of natural disaster widely distributed in some areas with special topography and geomorphological conditions in various countries around the world.

This is a mixed flow of soil, water and air between sand-carrying water flow and landslide on the mountain valley or mountain slope, which is triggered by water sources such as heavy rain and melting ice and snow, and contains a large amount of sediment and stones. Mudslides are mostly accompanied by flooding in mountainous areas. The difference between it and ordinary floods is that the torrent contains a sufficient amount of solid debris such as sediment and stones, and its volume content is at least 15% and up to about 80%, so it is more destructive than floods.

Landslides and mudslides are a widespread natural disaster.

Landslide refers to the natural phenomenon of soil or rock mass on the slope, which is affected by factors such as river erosion, groundwater activity, rainwater soaking, and artificial slope cutting, under the action of gravity, along a certain weak surface or weak zone, and slides down the slope as a whole or scattered.

Mudslides refer to landslides caused by heavy rains, heavy snowfalls, or other natural disasters in mountainous areas or other ravines and areas with steep terrain, and carry a large amount of sediment and rocks. Debris flow has the characteristics of suddenness, fast flow rate, large flow rate, large material capacity and strong destructive power. Mudslides often wash away transportation facilities such as roads, railways, and even villages and towns, causing huge losses.

d.Landslides and mudslides are a widespread natural disaster.

Landslide is the phenomenon that the rock mass or soil mass on the slope slides downward under the action of gravity; Mudslides are special torrents that erupt in mountainous areas, including sediment, rocks and huge gravel; Landslides and mudslides will damage farmland, villages, roads, etc., and will endanger human life, property and safety. China's mountainous areas are large, and the undulating surface is a kind of natural disaster with wide distribution, that is, the destruction of human activities, so that landslides and debris flows are widely distributed.

The phenomenon of glacier ice sliding downward under the action of gravity and pressure is glacial motion. A false.

A mudslide is a special torrent that carries a large amount of sediment and rocks.

Landslides and mudslides can damage farmland, villages, roads, etc., which are natural disasters and endanger human life, property and safety. C false.

d.Landslides and mudslides are a widespread natural disaster.

D, that's what I wrote... I'm just here to make up the numbers.

1.When hiking along the valley, in case of heavy rain, move quickly to higher ground and do not stay too much at the valley floor.

2.Watch your surroundings and listen especially for thunderous noises coming from distant valleys, and be on high alert if you hear them, as they may be a sign of an impending mudslide.

3.Choose leveled heights for camping, avoid slopes with rolling rocks and lots of accumulation as much as possible, and do not camp at the bottom of valleys and ravines.

4.After discovering a debris flow, you should immediately climb the slopes on both sides in a perpendicular direction to the debris flow, the higher you climb, the better, and the faster you run, the better, and you must not go downstream of the debris flow.

Landslides and debris flows are formed under the following conditions:

1. The conditions for the formation of landslides are:

1. The basic conditions of rotten punching: there is a sliding space in front of the slope body, and there are cutting surfaces on both sides. Landslides are prone to occur in areas with steep mountains, loose soil structure, and water accumulation, such as in southwest China, especially in the hilly and mountainous areas of southwest China.

2. The main inducing factors are: **, rainfall and snowmelt, surface water erosion, unreasonable human engineering activities, as well as tsunamis, storm surge, freeze-thaw, etc. will also induce landslides.

2. The conditions for the formation of debris flow are:

1. Abundant reserves of solid loose materials.

2. The slope slope and the longitudinal ratio of the valley are large (the terrain with deep valley and steep slope).

3. Sufficient water supply can be obtained from high-intensity precipitation or ice and snow meltwater.

The correct way to escape from a mudslide

When walking along the valley, if you encounter heavy rain, notice unusual noises in the valley or hear an alarm, be sure to try to run out of your house and into an open area to avoid being buried as much as possible.

Climb the slope of the hill perpendicular to the debris flow immediately, climb as high as possible, run as fast as possible, and never go in the direction of the flow of the Hungry Debris flow. In the event of a landslide, it is also necessary to evacuate in the direction perpendicular to the landslide.

Landslides are characterized by "sliding" down the slope, and debris flows are characterized by "flowing" along the ditch.

Landslides and debris flow disasters are mainly distributed in the southwest of China.

The junction zone between the plateau and the mountains in the southwest of China, especially the Huiwenmo is a Hengduan mountain, with large undulating terrain, active crustal movement, loose front bucket accumulations on the surface, poor vegetation coverage, and landslides and debris flows are prone to heavy rainfall in summer.

In the northeast, northwest and southeast of China, there are also the junction of mountains and plains, the terrain is not undulating, the movement of the crust is not active, there are loose accumulations on the surface, the vegetation coverage rate is better, and the possibility of landslides and debris flows is smaller than that in the southwest in the event of heavy rain in summer.

The landslide and debris flow disasters are mainly distributed in the southwest of China.

b North-east.

c North-west.

d South-eastern Part.

The terrain of plateaus and mountainous areas in the southwest of China is undulating, coupled with the relatively large amount of rainfall and the concentration of birds, rainwater erosion increases the sliding force of landslides, and at the same time, rainwater will corrode rocks, gradually produce cracks under the action of pressure, and form unstable areas, so landslides and debris flow disasters occur frequently

Therefore, a

Landslide is a phenomenon in which a large number of soil and rock masses on the slope slide downwards along a certain sliding surface under the action of gravity. Mudslide.

It is a special torrent that suddenly erupts and contains a large amount of mud, sand, and stones.

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.

A mudslide is a special torrent that suddenly erupts and contains a large amount of sediment and stones. It mainly occurs in mountainous areas with poor geology and steep terrain. In general, there are three conditions for the formation of a debris flow:

First, there is a relatively concentrated unstable loose soil and rock material; second, there is a sudden and rapid flow of water; Third, there is a suitable catchment and steep terrain.

The relationship between landslides and debris flows is also very close, and areas prone to landslides and collapses are also prone to debris flows, but the outbreak of debris flows has an indispensable water source condition. In addition, the material from collapses and landslides is often an important solid material for debris flows**. Landslides are also often directly converted into debris flows during movement, or after a period of landslide occurrence, their accumulations generate debris flows under certain water source conditions.

That is, debris flow is a secondary disaster of landslides and collapses.

Mudslides and landslides share many of the same contributing factors.