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錨噴巷道架設前探梁有何規定?

作者:煤礦安全網 2016-10-26 21:13 來源:煤礦安全網

錨噴巷道架設前探梁有何規定?
     答:(1)巷寬小于3m時,可在巷道頂部使用2根前探梁;巷寬大于3m時,應再增加1根前探梁;
     (2)卡環間距和前探梁的間距,應按作業規程規定的錨桿間、排距確定,卡環的方向必須有可調性;
     (3)放炮后松開卡環,應及時將前探梁伸移到迎頭,并用板皮、木楔背頂;
     (4)按設計位置打入最前排錨桿安裝卡環,同時卸下最后排的卡環,將前探梁穿入新安裝的卡環內,背好頂后再進行錨桿支護施工。
     (5)安裝卡環的錨桿,最大外露長度不得超過120mm。

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