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一、大锅锥的生产能力及设计桩长:东龙海复线桥梁基础,由于地基土壤多为牯砂土及粉砂土互层,地下水位较高,设计大多采用钻孔灌注桩基础。钻孔工具均为大锅锥。实践证明在这种易钻易坍地区,使用大锅锥钻孔,对保证孔壁稳定,钻孔垂直度,成孔保证率都是可以优先采用的工具。钻孔速度,我处施工的58根长度16.5～20米孔桩,均可在18～24小时内交孔。
First, the cauldron cone of production capacity and design Pile length: Tung Longhai double-track bridge foundation, as the foundation soil mostly silt sand and silt interbed, groundwater level is higher, the design mostly used bored pile foundation. Drilling tools are cauldron cone. Practice has proved that in this easy-to-easy area, the use of cauldron cone drilling hole to ensure that the hole wall stability, verticality of drilling, hole formation rate is the preferred tool. Drilling speed, I place construction 58 length 16.5 to 20 meters hole piles, can be in 18 to 24 hours to pay holes.