Five major problems affecting the environment of the mine

Mine resources are very important to us, but environmental issues are more important to us. If we can't protect our ecological environment in time, it will also affect our mineral rights trading work. Therefore, this paper describes five problems that jeopardize the mine environment: mining activities destroy a large number of cultivated land and construction land, mining-induced geological disasters, mining damage to the balance of water in the mining area, various water environmental problems, exhaust gas, dust in mining, Waste slag emissions, air pollution and acid rain and mining damage natural landscapes, affecting the integrity of the entire environment

First, mining activities have destroyed a large amount of cultivated land and construction land. Due to mining and various types of waste residue and waste rock piled up, the country has invaded the land by 5.86 million hectares, destroyed 1.06 million hectares of forest and destroyed 263,000 hectares of grassland. Destruction of surface vegetation and large amount of tailings piled up, leading to serious soil erosion and land desertification. Jungar coal fields such as desertification area accounts for 21% of coalfield area.

The second is mining induced geological disasters. More than 180 collapses caused by mining in the country, more than 1,600 collapse pits, with a collapse area of ​​1,150 square kilometers. Nearly 40 cities have experienced mining subsidence disasters in the country, causing 25 serious damages. The annual losses caused by mining ground subsidence amount to more than 400 million yuan. Due to underground mined, ground and slope excavation, the mountain and slope are stable, resulting in geological disasters such as ground cracking, collapse and landslide.

Third, mining has caused the water balance in the mining area to be damaged, resulting in various water environmental problems. For example, in Shanxi Province, 260,000 people in 18 counties have difficulty in catching water due to coal mining, and 300,000 mu of paddy fields have become dry land, and more than 3,000 wells have been reduced in the province. According to incomplete statistics, causing serious water pollution due to waste, non-ferrous metal mine tailings more than 30 seats.

The fourth is the emission of exhaust gas, dust and waste slag in mining, causing atmospheric pollution and acid rain. The coal mining industry's emissions accounted for 5.7% of the country's industrial emissions, of which the pollutant emissions are 731,300 tons per year, mainly smoke, sulfur dioxide, nitrogen oxides and carbon monoxide, causing different levels of pollution in the mining area. The acid rain area caused by sulfur dioxide pollution accounts for more than 30% of the country's land area.

Fifth, mining destroys the natural landscape and affects the integrity of the entire environment.

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Chemical Composition (%)

C

Si

Mn

P

S

Ni

Cr

N

0.068

0.076

1.2

0.032

0.001

8.06

18.16

0.01

Size: 0.25mm-3.0mm

Shape: as cut, G1, G2, G3 and even G4.

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