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坡面掛網(wǎng)噴漿技術(shù)要求: 1. 噴射砼支護(hù)工程施工的特點是邊開挖邊支護(hù),分層開挖,分層支護(hù), 開挖完成既支護(hù)完成,開挖過程和噴射砼支護(hù)施工形式成流水作業(yè)。 2. 施工工藝流程 定位放線 基坑開挖 修整邊坡 鋼筋錨入 埋設(shè)噴射 砼厚度控制標(biāo)志、第一層砼噴射 鋼筋綁扎 第二層砼噴射進(jìn)入下 層土方開挖、噴射砼施工 ① 放線定位,周邊基坑分層開挖, 修整邊坡(平整度允許偏差± 20mm); ② 鋼筋制作,定位、打入; ③ 鋪設(shè)鋼板網(wǎng)及定位筋(鋼筋保護(hù)層厚度≥ 20mm,鋼筋網(wǎng)片鋪設(shè)時每 邊的搭接長度為 30d); ④ 施工噴射砼(面層 80mm厚,分兩次噴射,每遍 40mm厚,細(xì)石砼的等 級為C20); ⑤ 進(jìn)入下一層土方開挖; 3. 施工要求及技術(shù)措施 1 )先檢查邊坡的穩(wěn)定性,再清除邊坡中的松土、危土。 2)在機(jī)械開挖后應(yīng)輔以修整坡面使坡面平整,清除坡面上的塵土。 3 )施
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目 錄 1.干砌片石坡面防護(hù) ·······················································1 2.骨架護(hù)坡 ·····························································1 3.漿砌片石護(hù)坡、護(hù)墻 ···················································1 4.種草籽防護(hù) ··························································2 4.1 鋪草皮、種草籽 ···················································2 4.2 鋪草皮 ·············································
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