Does mining affect the natural environment?

A. What damage is done to the earth when people are mining and how to solve it

The impact of mining on the environment includes soil erosion, land subsidence caused by mining pits, destruction of biodiversity and the mining process Contamination of groundwater by wastewater containing chemicals.
The country has strict laws and regulations on environmental protection and restoration of the surface state of the mining industry, ensuring that the mining area should be restored to its original state, and even requires a better environment than before mining. Mining using the methods of the past, countries with less stringent restrictions on the mining industry, can cause irreparable damage to the environment while affecting human health.

B. Discuss the impact of mining activities on the natural environment

The impact of mining on the environment is mainly reflected in the following aspects:

Coal mining induced Ground fissures, ground subsidence, debris flow, surface water leakage, water level drop, and water quality deterioration caused by mining also bring a lot of inconvenience to the production and life of surrounding villagers.

In some mines, waste ores, coal gangue, etc. were randomly dumped, causing blockage of rivers and channels. Mining activities have caused surface water pollution, air quality degradation, etc., which have damaged the ecological environment of the mining area and the living environment of residents.

C. What pollution does mining have on the environment

The mine contains a lot of heavy metals, and the quarry will cause dust. If the dust is inhaled by the staff, the staff will not only absorb the dust for a long time A large amount of heavy metals, and inhalation of fine dust, the so-called PM2.5 can easily cause lung disease, and the dust can easily drift into the water body with the wind, or to other unpolluted land. In addition, there will be tailings in mining. Even the tailings contain heavy metals that are higher than the natural state. The accumulation of tailings will be a huge amount. If a collapse occurs, serious water and soil pollution may occur. Even if it is not a collapse, the scouring of the rainwater will cause the heavy metals of the tailings to flow into the water body and soil, thus causing the water body and soil to be polluted. Once the water and soil are polluted, the people in the vicinity will be affected

D. What will be the impact of mining

Iron ore is one of the ways for people to mine the earth’s ore resources. The iron ore is exploited too much, which will cause the following problems: (1) Excessive or even full exploitation of iron ore in a certain area will cause formation fault depression, subsidence or the entry of groundwater. (2) There will be problems of environmental pollution. (It is rarely seen now) The main iron ore needs to be smelted, which will produce waste residue and waste gas to pollute the environment.
I don’t think there’s much of a problem with the planet as a whole. After all, the distribution of iron ore is not concentrated in a certain area of ​​the earth (such as oil in West Asia), but only partially changes the natural environment near the ground, which will not have much impact on the earth.

E. What are the main aspects of the impact of mining engineering on the soil environment

◆Loss of soil resources and pollution of soil environment.

In the process of mining, it will occupy a large area of ​​land, and then lose a large area of ​​soil resources. The tailings dust from mining mines fly into the soil, and after being washed and leached by rainwater, it is easy to infiltrate the toxic and harmful components into the soil, resulting in strong acid pollution, organic poison pollution and heavy metal pollution of the soil. For example, in mining, the metal sulfides produced are unstable and will be oxidized to form acid mine wastewater (AMD). And soil pollution can last for hundreds or even thousands of years. Heavy metals in polluted soil mainly include mercury, cadmium, lead, chromium and metalloid arsenic and other elements with significant biological toxicity, as well as certain toxic elements such as zinc, copper and nickel. The soil’s ability to absorb pollutants and self-purify is limited. When the pollutants exceed the critical value, its own composition and function will also change. Excessive heavy metals can cause plant physiological function disorders and nutritional disorders. Mercury and arsenic can weaken and inhibit soil. The activity of nitrifying and ammonifying bacteria affects nitrogen supply. The concealment and non-biodegradability of heavy metal pollution continue to accumulate in the organism through the food chain, and finally enter the human body to accumulate, causing harm to human health.

◆Changes in regional environmental conditions lead to soil degradation and destruction.

Mine excavation, stripping and mining have changed the geological, landform, vegetation and other environmental conditions and natural features of the mining area. If the surface vegetation is destroyed, loose soil and rocks are exposed on the surface, which greatly aggravates soil erosion and weathering. In addition, after mining, gobs will be formed underground, subsidence and subsidence will be formed on the surface, and deep subsidence will form lakes for a long time, and shallow subsidence will cause cracks on the surface to form underground funnels, and then groundwater will run off, which is detrimental to the growth of crops.

◆Secondary geological disasters accelerate soil degradation and destruction.

Mining has changed the originalThe geological structure and the formation of large-scale goafs can cause secondary geological disasters such as earthquakes, collapses, landslides, and debris flows. Large areas of topsoil and loose materials stripped in open-pit mining can easily induce geological disasters such as debris flows and landslides, resulting in large-area soil losses. It will also cause rock movement and ground pressure activities, resulting in surface subsidence, etc., resulting in damage to the natural environment of the mining area.

F. Will bitcoin mining damage the environment?

Bitcoin is mined on the Internet, not on the mountain. “Mining” is just a metaphor, and will not damage the environment Environment

G. The impact of open-pit mining on the environment

(1) Water pollution
Open-pit mining directly destroys a large amount of land, and various types of waste rock, waste residue and tailings are stacked Also occupy a lot of land. According to incomplete statistics, the national mines occupy a total of 5.86 million hm2 of land, destroy about 1.06 million hm2 of forest, and 263,000 hm2 of grassland. There are more than 100 large coal research rock mountains in Shanxi Province, covering an area of ​​more than 2,000
hm2, more than 15,000 large and small building materials mines (sites), and 80,000 hm2 of land destroyed by borrowing, quarrying, and dredging. The stripping of topsoil in mines usually ignores the preservation of arable soil, resulting in serious soil erosion; after the surface vegetation is destroyed, the erosion by wind and hydraulic force is intensified, and large areas of land are desertified.

(2) Geological disasters
Ground and slope excavation affects the stability of mountains and slopes, resulting in deformation of rock (soil) bodies and inducing geological disasters such as collapse and landslides. The waste rock (slag) discharged from mines often accumulates on hillsides or valleys, and debris flows are prone to occur under the induction of heavy rain. There have been more than 60 landslides in the Fushun West Open-pit Mine; a large-scale landslide of 1 million m3 has occurred in the Baiyin open-pit mining pit; 11 people have been killed by the landslide in the Wanshan Quarry in Xiangfan; the Panzhihua Limestone Mine has suffered 3 major landslides, causing serious damage to facilities ;In 2003, there were 94 geological disasters such as collapses, landslides and debris flows in the Tongchuan mining area due to continuous rainfall, and the direct economic loss was more than 20 million yuan; the landslide in the south dump of Antaibao Open-pit Mine caused many deaths .

(3) Solid waste pollution
In the open-pit mines near the scenic area, the tourism and sightseeing environment is extremely uncoordinated due to the damage to the landform and landscape by mining. Many mines dump solid waste at will, leading to siltation of gullies and rivers, poor flood discharge, and constant flooding.

(4) Damage to the water environment system
Mining waste residues and tailings are exposed to the atmosphere, and the sulfides in them are oxidized to turn the precipitation into acid rain, and the processing wastewater does not meet the standard The discharge often causes the surface water near the mining area to be polluted, and even unable to drink or irrigate. In addition, the dredging and drainage in the stope changed the natural flow field of groundwater and the conditions for replenishment and drainage, breaking the balanced transformation of atmospheric precipitation, surface water and groundwater, often forming a large and accumulating falling funnel centered on the mining area, causing the spring to dry up. , water depletion.

(5) Atmospheric pollution
The large-scale mobile mechanical equipment and large blasting are used in open stope production, resulting in a series of dust pollution in the air in the mine, such as blasting and the use of diesel engines as powered equipment, etc. Common pollutants mainly include dust, harmful and toxic gases [H2S, SO2, C0, NO2, etc.] and radioactive aerosols. Due to the different production processes, the amount of dust produced is related to many factors such as the type of machinery and equipment used, production capacity, rock properties, operating methods and natural conditions. Open-pit mining has high intensity and high degree of mechanization. Affected by ground meteorological conditions, the gas generated is often sudden, such as blasting, unfavorable meteorological conditions and poor natural ventilation methods, which can even cause local pollution to spread to the whole mine, causing atmospheric pollution. . A large amount of dust and toxic substances produced in the process of beneficiation production are also important factors of air pollution in mining areas. Under the action of wind flow generated by nature and transportation vehicles, the tailings powder will be directly lifted, resulting in a very high dust concentration in the atmosphere, which seriously causes serious pollution. Pollution of air in mining areas. In addition, the exhaust gas rich in heavy metal substances produced by the busy transportation in the mining area, the thick smoke produced by the smelters, sintering plants, and power plants in the mining area, and the harmful substances produced by the coal burning in the mining area, all constitute air pollution in the mining area.

H. The harm of mining to the environment

I. What is the harm of open-pit copper mining to the environment: open-pit mines are easy to cause water pollution, geological disasters, solid waste pollution, air pollution and water pollution and other hazards.

Governance and protection methods: develop new energy sources, reduce exploitation, and exploit rationally.

Second, what are the hazards of open-pit coal mining to the environment: a large area of ​​ground is required for open-pit coal mining, so the damage to the ground vegetation is very serious, secondly, the loose surface will cause soil erosion, and the third is the Cause soil acidification, because coal contains a large amount of sulfur, coal mining will cause a large amount of sulfur to merge into the water body, which will cause soil acidification. Fourth, it will cause mudslides and landslides.

Governance and protection methods: develop new energy sources, reduce exploitation, and exploit rationally.

Three, what harm does iron mining have on the environment: soil erosion, mine pitsof land subsidence, the destruction of biodiversity, and the contamination of groundwater by chemical-containing wastewater from mining processes.

Governance and protection methods: develop new energy sources, reduce exploitation, and exploit rationally.

Expansion information

I. What is water pollution

When the pollutants entering the water body exceed the environmental capacity of the water body or the self-purification capacity of the water body The phenomenon of deteriorating the water quality and destroying the original value and function of the water body is called water pollution. There are two reasons for water pollution: one is natural and the other is man-made. Special geological conditions make a large amount of certain chemical elements enriched, natural plants produce some harmful substances when they rot, and water pollution caused by rainwater falling to the ground and carrying various substances into the water body are all natural pollution.

I. Does mining have an impact on the land?

There is still some impact on the land. It will not cause an earthquake, but it will cause ground collapse and groundwater. Take time out and so on. Both of these affect the land, and the flood disaster has no direct impact.

J. The mine has been shut down for 20 years, and the stream is still yellowish brown. Mining has such a great impact on the environment

Yes, the impact is very big

In an ore mining area in Shaanxi Province, the mine has been stopped for nearly 20 years, but the nearby stream is still yellow-brown as always, and animals can’t drink it. This scene was once very terrifying, the environmental damage was very serious, and the water quality was seriously polluted. When netizens saw this picture, they realized that mining has such a great impact on the environment.

Mining can continue, but the damage to the environment must be minimized. For a mine, it is necessary to make a drainage plan according to the actual situation of the mine, conduct sewage treatment in stages and batches, reduce the toxic substances in the sewage as much as possible, and actively try to improve the filtration method of sewage. While developing the economy, protect the environment and achieve a synchronous development.


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