Although clean energy has been widely used in recent years, coal resources still occupy the majority of the energy structure. It is understood that in 2022, China will consume5

Although clean energy has been widely used in recent years, coal resources still occupy the majority of the energy structure. It is understood that in 2022, China will consume5.41 billion tonsStandard coal accounts for a significant portion of total energy consumption56.2%It can be seen that coal still occupies a very important position in the energy structure.

However, as one of the three major coal producing regions in the world, China is not the largest coal field and the country with the highest coal reserves,Do you know where the world's largest coal field is located and how abundant its reserves are?

How Rich Are the World's Largest Coalfield Reserves

The distribution area of the world's largest coal field is180000 square kilometers, which is equivalent to the total area of five Taiwan Province in China. The coal resources are also very rich, reaching316.8 billion tonsCoal production has been ongoing since 1750 and has been mined since then273 yearsThere is still no sign of digging it out.

It is the Appalachia Coal Field in the United States and the largest coal base in the world. It is distributed in nine states in the east of the United States and extends from northeast to southwest as a whole, with a length of1200-1250 kilometers, width50-300 kilometers, thickness is500-900 meters.

And because of itsThere are many and stable coal mining layersAverage thickness of coal seam1.7 meters.bituminous coalandbituminous coalOnce extracted, it can be directly used, generating high heat without any other impurities, greatly saving processing costs,How was such a large coal field born and why did it gather so much high-quality coal?

How coalfields were born

In fact, the formation process of coal is influenced by various factors comprehensively, so it is still difficult to accurately determine the formation process of coal. Currently, there is a widely recognized view thatIt is formed by plant debris after Diastrophism and hundreds of millions of years of long-term evolution, long-term isolation from the air, and changes in various factors such as high temperature and high pressure.

Just take itAppalachia CoalfieldFor example, its coal seams belong toCarboniferousFrom 286 million to 360 million years ago, according to statistics, the coal reserves during this period accounted for approximately half of the world's total reserves50%.and20-4040.

.

According to geologists' calculations,0.3bituminous coal6.

Like one of the oldest coal mining areas in ChinaDatong Coalneld and34100 tons, of which the reserves in the Carboniferous Permian period are28200 tons.

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