软岩顶板下大断面硐室联合支护经验

Experience in combined supporting for use in large-span underground chamber under soft roof strata

淮北矿业集团公司涡北煤矿南翼轨道上山上部绞车房属于深井及三软围岩条件下大断面硐室,为提高其安全性,施工中采用锚网喷加U型棚联合支护,简化了施工工艺,降底了成本,缩短了工期,取得明显经济效益和社会效益。

Wobei coal mine has an underground winch room on the top end of its south rail rise.This winch room is a large-span underground chamber constructed in soft rock strata in deep mine.In order to improve its safety characters,U-shape bolting-mesh-beam-shotcreting combined support is used in its construction,which simplifies the construction process with costs reduced and construction cycle shortened.This produces significant economic and social benefits.