Abstract
Ningzheng Mining Area, as one of the key mining areas of Longdong Energy Base in Gansu Province, whose average overburden depth of coal seams is more than 800 meters and average thickness of coal seams ranges from 8m to 14m. This paper analyzed the typical characteristics of water damage, heat damage, high mine pressure and gas disaster in Ningzheng mining area. Disaster prevention measures and two resource utilization prevention technologies (namely EMS cooling technology, Gas power generation and cogeneration system cooling technology) were put forward, the rearch has a realistic significance for the safety exploitation, comprehensive utilization of deep coal resources in China, energy conservation and emission reduction and development of circular economy.
Highlights
Ningzheng Mining Area is one of the key mining areas of Longdong Energy Base in Gansu Province
The total coal production is 39 million tons/year, mainly including Hetaoyu, Xinzhuang, Jiulongchuan and other mines. hetaoyu and Xinzhuang are under development with a planning production of 800 million tons per year each .It is expected that the Hetaoyu mine will be full production by 2019Jiulongchuan will see a reduction in production due to the decreasing coal demands
The overburden depth of the coal seam is more than 800 meters
Summary
Ningzheng Mining Area is one of the key mining areas of Longdong Energy Base in Gansu Province. It is the main development area for future coal supplies in Gansu Province. The total coal production is 39 million tons/year, mainly including Hetaoyu, Xinzhuang, Jiulongchuan and other mines. Hetaoyu and Xinzhuang are under development with a planning production of 800 million tons per year each .It is expected that the Hetaoyu mine will be full production by 2019Jiulongchuan will see a reduction in production due to the decreasing coal demands. The Ningzheng Mining Area is located in the southern margin of the Ordos Basin. It is mainly the Jurassic Yan'an Formation coal system. Ningzheng Mining Area is facing very challenging mining conditions associated with water hazard, heat stress, high ground pressure etc[1]
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