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軟基處理的方法:砂墊層法
對于地基上部軟土層極薄且含水量大時,在軟土地基上敷墊0.5~1.2m左右厚的砂墊層。這樣可達(dá)到固結(jié)軟土層,使砂墊層起到上部排水層作用;同時,砂墊層又成為填土內(nèi)的地下排水層,以降低填土內(nèi)的水位;在進(jìn)行填土及地基處理施工時,為施工機(jī)械提供良好的通行條件。
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什么是旋噴法施工?
旋噴法施工是利用鉆機(jī)把帶有特殊噴嘴的注漿管鉆進(jìn)至地層的預(yù)定位置后,用高壓脈沖泵,將水泥漿液通過鉆桿下端的噴射裝置,向四周以高速水平噴入土體,借助流體的沖擊力切削土層,使噴流射程內(nèi)土體遭受破壞,與此同時鉆桿一面以一定的速度旋轉(zhuǎn),一面低速徐徐提升,使土體與水泥漿充分?jǐn)嚢杌旌希z結(jié)硬化后即在地基中形成直徑比較均勻,具有一定強(qiáng)度的樁體,從而使地層得到加固。
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2016新款履帶式錨固旋噴鉆機(jī)XPL-60A型,垂直度 提升速度 回轉(zhuǎn)速度都有顯示的哦,一次接三米鉆桿,單雙三重管都可做,還可用于抗浮錨桿、基坑支護(hù)、旋噴擴(kuò)大頭錨桿、螺旋鉆桿等施工!