Abstract:
The mining of deep coal resources is facing the coupled threat of “high stress, high gas, and high temperature” three high disaster causing factors, making gas dynamic disasters a global problem that restricts the safe and efficient development of deep coal resources. Pingdingshan mining area is a typical representative of deep mining in China’s coal mines. However, with the increase of mining years and the extension of mining depth, the scale and risk of gas dynamic disasters have increased, and the problem of “high cost, low efficiency, and long cycle” in disaster management has become increasingly prominent. Starting from the differential characteristics of gas dynamic disasters in Pingdingshan mining area, based on four-dimensional framework—gas occurrence, stress distribution, geological structures, and mining layout—as the foundation for identifying gas risk zones at four spatial scales: mining area, mine, mining district, and working face. By applying a red-yellow-green tri-color management system for disaster risk zoning, differentiated prevention technologies are matched accordingly, thereby establishing a differentiated prevention system for Pingdingshan mining area gas dynamic disasters. Based on this system, and by integrating multisource information such as the characteristics of coal and gas outbursts, geological structure distribution, in-situ stress, and gas occurrence in the Pingdingshan mining area, the region is divided into three risk-level management zones: “red” (eastern area), “yellow” (western area), and “green” (central area). On this basis, precise technological matches are implemented, including protective seam mining for coal seam groups, hydraulic permeability enhancement for single coal seams, and surface borehole extraction techniques. These are combined with efficient gas utilization and management measures to achieve accurate, efficient, and environmentally friendly gas control, ultimately realizing the integrated goal of safety, technology, and economy.