framework of steel for mine roadway support

摘要

the invention relates to a metal support framework for shaft support intended to be used in areas where mining galleries that crosses the mining pressure values very touchhow are the high gallery in lignite mines.according to the invention, the support,they characterize in that in order to create a high resistance with a sustineri destined for galleries in which manifests different pressures on the propping up metalit is composed of some segments positioned by two circular hearth and respectively in some segments and circular gallery ceiling sidedistances between the segments connecting convenient circular hearth and ceiling that are interwoven with some bride of adequate sizeand some stoppers having circular profile profile similar to segments are fixed symmetrically on the inside and outside circular segments at their sides so to limit glisarunder the action of pressure from her roof of circular segments.