The present invention relates to timbering for a tunnel of a mine. According to the present invention, the timbering for a tunnel of a mine comprises: a pair of lower segments supported on the bottom surface of the tunnel, installed on both sides of the tunnel, and vertically arranged; and an upper segment in the form corresponding to the upper part of the tunnel, whose both ends are combined with a pair of lower segments respectively, and integrally formed. Moreover, the height of a pair of lower segments can be adjusted.
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