What are the geological disasters and what are the geological disasters

Geological disasters refer to geological processes or geological phenomena formed under the action of natural or man-made factors, causing losses to human life and property, and causing damage to the environment. The distribution and change of geological disasters in time and space are not only subject to the natural environment, but also related to human activities, and are often the result of the interaction between humans and the natural world.

Geological disasters mainly include collapse, landslide, debris flow, ground fissure, land subsidence, ground subsidence, rock burst, tunnel water inrush, mud inrush, gas outburst, coal seam spontaneous combustion, loess collapse, rock and soil expansion, sand liquefaction, land freeze-thaw, soil erosion, land desertification and swamping, soil salinization, as well as volcano, geothermal hazards, etc.

What are the types of geological hazards of ground deformation?

There are 12 types and 48 kinds of common geological disasters. They are: 1 crustal activity disasters, such as **, volcanic eruptions, fault dislocation, etc.; 2. Slope rock and soil movement disasters, such as collapses, landslides, debris flows, etc.; 3. Land deformation disasters, such as ground subsidence, land subsidence, ground cracking (ground fissures), etc.; 4. Mine and underground engineering disasters, such as spontaneous combustion of coal seams, cave collapses, roofing, partial help, drum bottoms, rockbursts, high temperatures, water inrushes, gas, etc.; 5. Urban geological disasters, such as deformation of building foundations and foundation pits, garbage accumulation, etc.; 6. Disasters in rivers, lakes and reservoirs, such as bank collapse, siltation, leakage, inundation, outburst, etc.; 7. Coastal hazards, such as sea level rise, seawater intrusion, sea cliff erosion, harbor siltation, storm surge, etc.; 8. Marine geological hazards, such as underwater landslides, tidal sand bars, shallow gas hazards, etc.; 9. Special rock and soil disasters, such as loess collapsion, expansive soil expansion and contraction, frozen and thawed frozen soil, sand liquefaction, silt touch, silt thixotropy, etc.; 10. Land degradation disasters, such as soil erosion, land desertification, salinization, latent breeding, swamping, etc.; 11. Soil and water pollution and geochemical anomalous disasters, such as groundwater quality pollution, farmland land pollution, endemic diseases, etc.; 12. Water depletion disasters, such as river leakage, spring water drying, underground aquifer dredging (abnormal drop in groundwater level), etc.

Geological hazards are:

1. Ground fissure: a geological phenomenon in which surface rock and soil crack under the action of natural or man-made factors, and form cracks of a certain length and width on the ground, when this phenomenon occurs in areas with human activities, it can become a geological disaster.

2. Land subsidence: under the influence of human engineering economic activities, due to the consolidation and compression of underground loose strata, the elevation of the surface of the earth's crust is reduced.

3. Debris flow: a special torrent caused by landslides caused by heavy rain, blizzard or other natural disasters and carrying a large amount of sediment and stones. Mudslides are a catastrophic geological phenomenon.

4. Rock and soil expansion: due to its characteristics of strength attenuation caused by the chaotic distribution of cracks and repeated expansion and contraction deformation in the soil, it often brings serious damage to human engineering buildings and causes many geological disasters.

5. Soil erosion: The geological and climatic conditions that are prone to soil erosion are the main causes of soil erosion in China.

Geological disasters refer to catastrophic events that cause damage to the ecological environment due to natural and man-made actions. dao

When I returned to China, the main geological disasters included **, collapse, landslide, debris flow, soil erosion, ground subsidence, ground fissures, land desertification, volcanic eruptions, etc., in addition to **, volcanic eruptions, tornadoes, typhoons and other disasters, most other geological phenomena are caused by human factors.

Among them, collapse, soil erosion and volcanic eruptions are the main geological disasters.

According to statistics, China's economic losses caused by geological disasters, excluding **, account for about 1 5 to 1 4 of all kinds of natural disasters. Therefore, reducing or stopping behaviors that damage the ecological environment and taking preventive and treatment measures in a timely manner are the main ways to reduce losses.

Geological disasters are mainly divided into BAI: collapse, landslide,

There are six types of debris flow, ground subsidence, ground fissure, and ground surface subsidence, among which collapse, landslide capacity, and debris flow are the three most frequent occurrences of all geological disasters. The characteristics of the above six types of geological hazards are as follows:

A collapse is a sudden acceleration (jump) of a geological body from a high steep slope under the action of gravity. It has obvious pulling and overturning phenomena.

Landslide refers to the gravity failure of a geological body that slides downward along a weak geological surface. Landslides often have a double meaning, which can refer to a process of gravity geology or the result of a gravity geology.

A mudslide is a special torrent that carries large amounts of solid material such as sand, rocks and boulders on a valley or hillside due to precipitation (heavy rainfall, glaciers, snow melt water). The process of water and sand collection is very complex, and it is the product of the comprehensive action of various natural and/or human factors.

Ground subsidence refers to a geological phenomenon in which surface rock and soil fall downward under the action of natural or man-made factors, and form a collapse pit (hole) on the ground.

Ground fissures are a macroscopic surface damage phenomenon in which the surface rock layer and soil are cracked under the action of natural factors (crustal activity, water action, etc.) or human factors (water pumping, irrigation, excavation, etc.), and cracks of a certain length and width are formed on the ground.

Land subsidence is a local downward movement (or engineering geological phenomenon) that reduces the surface elevation of the earth's crust due to the consolidation and compression of loose underground strata under the influence of human engineering economic activities.

What are the types of geological hazards of ground deformation?

Geological disasters refer to geological processes (phenomena) formed under the action of natural or man-made factors that cause damage and loss to human life, property and the environment. Such as collapse, landslide, debris flow, ground fissure, soil erosion, land desertification and swamping, soil salinization, as well as volcanoes, geothermal hazards, etc.

Geological disasters refer to geological processes (phenomena) that cause damage and loss to human life, property, and the environment. Such as collapses, mudslides, ground fissures, and **, volcanoes

Landslides, collapses, mudslides, ground subsidence, ground fissures, **.

There are many: volcanoes, mudslides, landslides, ground fissures, soil erosion, desertification and swamping, soil salinization, and geothermal damage.

Geological disasters refer to disasters that occur in the earth's lithosphere, such as volcanoes, mudslides, and landslides.

Some of the people upstairs are ecological problems, not geological disasters.

Geological disasters refer to the deterioration of the geological environment caused by natural geological processes and human activities.

zhi low environmental quality, dao

Geological events that directly or indirectly endanger human security and cause losses to social and economic construction. Geological disasters refer to geological processes (phenomena) formed under the action of natural or man-made factors that cause damage and loss to human life, property and the environment. Such as collapse, landslide, debris flow, ground fissure, land subsidence, ground subsidence, ground subsidence, rockburst, tunnel water inrush, mud inrush, gas outburst, coal seam spontaneous combustion, loess collapse, rock and soil expansion, sand liquefaction, land freeze-thaw, soil erosion, land desertification and swamp, soil salinization, as well as volcano, geothermal damage, etc.

There are **, volcanoes, mudslides, slips. Collapse, ground fissures, soil erosion, desertification. swamping, soil salinization, geothermal damage.

Mudslides are caused by precipitation, heavy rainfall, glaciers, and snow melting.

There are five types of geological disasters: collapse, landslide, debris flow, ground subsidence, and ground fissure.

1. Collapse. Collapse (caving, collapse or collapse) is a geological phenomenon in which the rock and soil mass on a steep slope suddenly detached from the parent body under the action of gravity, collapses, rolls, and accumulates at the foot of the slope (or valley).

Before the collapse occurs, there are generally such precursors: there are cracks in the back of the collapse body; The leading edge of the collapse body falls off, the soil rolls off, and small collapses continue to occur. New fracture and deformation of the slope surface, and even a small area of soil and rock spalling; Occasionally, there is a tearing, rubbing, and staggering sound of the rocky collapse.

2. Landslides. 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, and under the action of gravity, along a certain weak surface or weak zone, as a whole or scattered, sliding down the slope. The moving rock (soil) body is called the displacement body or slip body, and the unmoved underlying rock (soil) body is called the sliding bed.

3. Debris flow.

A mudslide is a special torrent that carries a large amount of solid materials such as sediment, rocks and boulders on a valley or mountain slope due to precipitation (heavy rainfall, glaciers, snow melt water).

The process of water and sand confluence is very complex, and it is the product of the comprehensive action of various natural and/or human factors. 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.

4. The ground collapses.

Ground subsidence refers to the destruction of the overlying rock layer The rock and soil body subsidence or collapse into the underground cavity, and form different forms of collapse pits on the surface, this phenomenon is called ground collapse.

In the collapse area, it is often accompanied by several cracks around the collapse pit, forming annular or arc cracks of different sizes. Due to the heterogeneity of the subsidence, sometimes some undulating drum mounds or irregular cracks are formed in the subsidence area.

5. Ground fissures.

Ground fissures are mainly cracks or faults that occur in the soil layer. Ground fissures of tectonic origin often appear in a multi-level geese-row combination pattern on the surface, and some can be connected into huge fissures.

Summary. Hello, glad to answer for you. Geological hazards are i:

According to the nature of disaster-causing geological processes, there are 12 types and 48 kinds of common geological disasters, which are: crustal activity disasters, such as **, volcanic eruptions, fault dislocation, etc.; Oblique rock and soil movement disasters, such as collapses, landslides, debris flows, etc.; Ground deformation disasters, such as: ground subsidence, ground subsidence, ground cracking, etc.; Mine and underground engineering disasters, such as spontaneous combustion of media layers, cavern collapses, roofing, partial help, drum bottoms, rockbursts, high temperatures, water inrushes, gas, etc.; Urban geological hazards, such as deformation of building foundations and foundation pits, garbage accumulation, etc.; Disasters in rivers, lakes and reservoirs, such as bank collapse, siltation, leakage, inundation, outburst, etc.; Coastal hazards, such as sea level rise, seawater inundation, coastal erosion, coastal siltation, storm surge, etc.; Marine geological hazards, such as underwater landslides, tidal sand bars, shallow air hazards, etc.; Special rock disasters, such as Huangshi collapsible expansion and contraction, frozen frozen products, SARS liquefaction, silt thixotropy and other land degradation disasters, such as water and land loss, land desertification, salinization, latent breeding, swamping, etc.; Water pollution and geochemical anomalous disasters, such as groundwater pollution, farmland pollution, endemic diseases and other water depletion disasters, such as river water leakage, spring water drying, underground aquifer dredging, etc.

Hello, glad to answer for you. Geological hazards are I: According to the nature of the geological action that causes the disaster, there are 12 types of common geological disasters and 48 kinds of common geological disasters, which are:

Crustal activity disasters, such as **, volcanic eruptions, fault dislocation, etc.; Oblique rock and soil movement disasters, such as collapses, landslides, debris flows, etc.; Ground deformation disasters, such as: ground subsidence, ground subsidence, ground cracking, etc.; Mine and underground engineering disasters, such as spontaneous combustion of media layers, cavern collapses, roofing, partial help, drum bottoms, rockbursts, high temperatures, water inrushes, gas, etc.; Urban geological hazards, such as deformation of building foundations and foundation pits, garbage accumulation, etc.; Disasters in rivers, lakes and reservoirs, such as bank collapse, siltation, leakage, inundation, outburst, etc.; coastal slag shack disasters, such as sea level rise, seawater inundation, coastal erosion, coastal siltation, storm surge, etc.; Marine geological hazards, such as underwater landslides, tidal sand bars, shallow air hazards, etc.; Special rock disasters, such as Huangshi collapsible expansion and contraction, frozen frozen products, SARS liquefaction, silt thixotropy and other land degradation disasters, such as water and land loss, land desertification, salinization, latent breeding, swamping, etc.; Water pollution and geochemical anomalous disasters, such as groundwater pollution, farmland pollution, endemic diseases and moderate water source depletion disasters, such as river water leakage, spring water drying, underground aquifer dredging, etc.

Extended information: Geological disasters refer to geological processes or geological phenomena that are formed under the guidance of natural or man-made factors, causing losses to human life and property, and causing damage to the environment. The distribution and change of geological disasters in time and space are not only subject to the natural environment, but also related to human activities, and are often the result of the interaction between humans and hosiery and the natural world.

Summary. Geological disasters refer to natural disasters caused by geological reasons that cause serious damage to the safety of human life and property or the ecological environment, and generally include the following categories:

Geological disasters refer to natural disasters caused by geological reasons that cause serious damage to the safety of human life and property or the ecological environment of the reformers, generally including the following categories:

1.**: Damage caused by the movement of the earth's crust and **.

2.Landslide: The phenomenon of sliding or sliding caused by the failure of rock and soil along a certain or uncertain surface.

3.Debris flow: The loose material of soil and rock that is not fixed on the surface of the ground suddenly mixes with water and flows down the slope, which is more harmful.

4.Collapse: The process by which one or more rock bodies slide or roll from a higher area to a lower area, often resulting in severe damage to the surrounding environment.

5.Ground subsidence: Groundwater, voids or other causes of sudden collapse or decline of the surface soil layer.

6.Karst collapse: The formation of karst caves due to the dissolution process, which further leads to the collapse of the earth's surface.

7.Ground fissures: Cracks on the ground surface caused by ** and other reasons.

8.Coastal erosion: Coastal erosion of rocks by seawater causes the coastline to retreat.

These disasters are very common geological disasters, which have caused great harm to our production and life.