Coal seam freezing type cross-drift coal uncovering method

The invention discloses a coal seam freezing type cross-drift coal uncovering method which comprises the following steps: a) arranging a drilling site in the position of a cross-drift operating surface of a tunnel being 5-7 meters away from a coal seam; b) drilling a plurality of cooling holes and temperature-sensing holes, which are matched with cooling pipes and temperature-sensing pipes of a stratum freezing system, in preset depth on the coal seam in the drilling site; c) arranging the stratum freezing system in the tunnel; d) respectively inserting the cooling pipes and temperature-sensing pipes of the stratum freezing system into the cooling holes and temperature-sensing holes; e) utilizing the stratum freezing system to cool the coal rock around the cross-drift to minus 30 DEG C to minus 20 DEG C and lasting for a period of time; f) opening the cross-drift and the coal rock in a blasting manner; and g) building arch for the tunnel. The method provided by the invention also comprises the steps of determ