PROVISIONAL SUPPORT DURING CROSS-CUTTING WORK IN MINING GALLERIES

摘要

P Provisional support for crosscutting work in mining galleries with push extensions, which are arranged in the longitudinal direction of the galleries and carried by a support frame, so that each of these push extensions, beyond the frame support on the front and on the back, is coordinated with an advancing cylinder, characterized in that the support frame 1 consists of at least three hangers 2, 3, 4 which can be moved, independently of one of the other, in the longitudinal direction and / or in the transverse direction. /P