Suitability evaluation method for developing underground coal gasification engineering by utilizing deep coal seam

A suitability evaluation method for developing underground coal gasification (UCG) engineering by utilizing a deep coal seam, comprising:

• acquiring basic geological conditions, engineering geological problems, hydrogeological conditions, contained coal quality, deep coal seam conditions, and heat and syngas components of unit coal gasification in a deep coal seam region, and comparing with evaluation criteria of influencing factors of the basic geological conditions, engineering geological problems, hydrogeological conditions, contained coal quality, deep coal seam conditions, and heat and syngas components of unit coal gasification in the deep coal seam region to obtain scores of corresponding influencing factors;
• determining impact indexes of a geological condition and engineering geological influencing factor, a hydrogeological condition influencing factor, a coal quality influencing factor, a coal seam condition influencing factor and an influencing factor of heat and syngas components of unit coal gasification according to scores of various influencing factors of the deep coal seam;
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• calculating a comprehensive impact index based on the impact indexes of the various influencing factors of the deep coal seam, and determining the suitability of developing UCG engineering by utilizing a deep coal seam according to the comprehensive impact index.