Support method for sharply inclined ultra-thick coal seam

The invention discloses a support method, which comprises the following steps of: performing end support in a predetermined length far from an original exploitation point; detecting the loosening clearance of a coal seam on the coal seam to be detected beyond the predetermined length by using a loosening ring tester or a drilling inspection instrument; performing enhanced support on the coal seamat the position when the loosening clearance of the coal seam is greater than a predetermined clearance value; and advancing a predetermined interval along the coal mining direction, and continuouslydetecting the loosening clearance of the coal seam till all the support operations are finished. By the support method, fracture in the coal seam can be effectively discovered, the loosening condition of the coal seam is learnt, and the coal seam is supported according to the loosening condition, so that the exploitation safety of a coal mining working face of a coal mine can be timely ensured.