Abstract:
Clarifying the carbon emission characteristics of open-pit coal mines is the prerequisite and foundation for realizing the goal of “double carbon”. On the basis of analyzing and identifying the carbon emission sources of open-pit coal mines, the accounting model of carbon emission is constructed based on carbon emission source inventory method. The carbon emission characteristics of different emission sources are analyzed by taking Weijiamao Coal Mine as an example, and paths for carbon neutrality of Weijiamao Coal Mine are proposed. The results show that the carbon emission sources from open-pit coal mines including two categories: the one is direct carbon emission sources, including carbon emission from energy consumption (mainly fuel oil and explosives), fugitive emissions and uncontrolled combustion; the other one is indirect carbon emission sources, mainly form electricity and water consumption. The total carbon emission of Weijiamao Coal Mine in 2022 is 112 785.978 tons. The direct carbon emission is 79 874.508 tons and the indirect carbon emission is 32 911.470 tons. Fuel consumption is the main contributor of carbon emission in Weijiamao Coal Mine, accounting for 47.152% of the total carbon emission. Based on the carbon emission characteristics, Weijiamao Coal Mine can adopt four major paths to achieve low-carbon development: optimizing the production system and energy utilization mode of coal mine to reduce carbon emission from energy consumption; comprehensively utilizing the intelligence and Internet of Things technology of mine to reduce unnecessary equipment loss and energy consumption; promoting the coupled use of traditional energy and new energy to reduce the emission coefficient of energy consumption; restore the ecological environment to enhance the carbon sequestration and sink enhancement benefits of the ecosystems in mining areas. The obtained results can provide a reference for carbon emission accounting and emission reduction strategy development in open-pit coal mines.