陕北侏罗纪煤田榆神府区因其面积大、储量多、煤质好引起了国内外的广泛关注。区内煤由于变质程度浅、丝炭含量高、燃点低,加之煤层埋藏较浅、倾角平缓等原因,煤层多沿露头发生自燃。煤层的自燃不仅使大片煤炭烧为灰烬,而且沿燃火熄灭带即火烧边界形成火烧残留煤和烘烤煤,这些煤的 Due to its large area, large reserves and good coal quality, the Yushenfu area of ​​the Jurassic coalfield in northern Shaanxi attracted wide attention at home and abroad. Coal in the area is characterized by shallow metamorphism, high silt content and low ignition point. In addition, due to the shallow burial of the coal seam and gentle dip, coal seam spontaneous combustion occurs along the outcrop. Coal spontaneous combustion not only makes a large piece of coal burning ashes, but also along the fire extinguished with the fire that the boundaries of the formation of fire burning coal and bake coal, the coal