The geological environment is very fragile, with shortage of groundwater, critical spontaneous combustion of coal seams and large distribution of burn rock in mining area.
矿区地质环境脆弱，地下水资源贫乏，煤层自燃严重，火烧岩广泛分布。
This provides the theoretical criteria and practical data for the productive department to divide the area of spontaneous combustion of coal seams.
这为生产上查明煤层自燃范围提供了理论和实际依据。
This provides the theoretical criteria and practical data for the productive department to divide the area of spontaneous combustion of coal seams.
这为生产上查明煤层自燃范围提供了理论和实际依据。
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