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學(xué)習(xí)快評(píng)丨qibao666888　　西??(xi)塱?(塱)隧??(sui)道??(dao)出??(chu)口??(kou)明??(ming)挖??(wa)段??(duan)全?(quan)長(zhǎng)??(chang)660米??(mi)??，最??(zui)大??(da)開(kāi)??(kai)挖??(wa)深??(shen)度?(du)達(dá)??(da)25米??(mi)??。??該??(gai)段??(duan)采??(cai)用??(yong)明??(ming)挖??(wa)順??(shun)作?(zuo)法?(fa)施??(shi)工??(gong)??，工??(gong)程??(cheng)圍??(wei)護(hù)??(hu)結(jié)??(jie)構(gòu)??(gou)形??(xing)式??(shi)復(fù)??(fu)雜??(za)??，地??(di)層?(ceng)敏??(min)感??(gan)??，基??(ji)坑??(keng)開(kāi)??(kai)挖??(wa)范??(fan)圍??(wei)內(nèi)??(nei)淤??(yu)泥??(ni)質(zhì)?(zhi)地??(di)層??(ceng)分??(fen)布?(bu)占??(zhan)比??(bi)超??(chao)過(guò)??(guo)70%??，施??(shi)工??(gong)難??(nan)度??(du)極??(ji)大??(da)??。　　西??(xi)塱??(塱)隧??(sui)道??(dao)出??(chu)口??(kou)明??(ming)挖??(wa)段??(duan)全??(quan)長(zhǎng)??(chang)660米??(mi)??，最??(zui)大??(da)開(kāi)??(kai)挖??(wa)深??(shen)度??(du)達(dá)??(da)25米?(mi)??。?該??(gai)段??(duan)采??(cai)用??(yong)明?(ming)挖??(wa)順??(shun)作??(zuo)法??(fa)施?(shi)工??(gong)??，工??(gong)程??(cheng)圍??(wei)護(hù)??(hu)結(jié)??(jie)構(gòu)??(gou)形??(xing)式??(shi)復(fù)??(fu)雜??(za)??，地??(di)層??(ceng)敏??(min)感??(gan)??，基??(ji)坑??(keng)開(kāi)??(kai)挖??(wa)范??(fan)圍??(wei)內(nèi)??(nei)淤??(yu)泥??(ni)質(zhì)??(zhi)地??(di)層??(ceng)分?(fen)布?(bu)占??(zhan)比??(bi)超??(chao)過(guò)??(guo)70%??，施??(shi)工??(gong)難??(nan)度??(du)極??(ji)大祝(da)??。。