昆明市滇池环湖南岸截污工程,干渠为矩形钢筋混凝土结构,渠道长4.4km,截污干渠截面尺寸为4.0m×3.0m,其中污水渠1.0m×3.0m,雨水渠3.0m×3.0m,设计坡度为0.0017。采用CFG桩复合地基作为干渠基础,干渠两侧为覫800钻孔灌注桩(支护桩),支护桩主要是在干渠基槽开挖时支挡干渠两侧土,支护桩之间为直径750mm的高压旋喷桩进行止水,根据干渠的埋深情况,本工程钻孔 Kunming Dianchi Lake Central Bank of the southern coast of sewage interception works, the main canal is a rectangular reinforced concrete structure, the channel length 4.4km, intercepting sewage section cross-sectional size of 4.0m × 3.0m, of which 1.0m × 3.0m sewers, drains 3.0m × 3.0m , The design slope of 0.0017. The CFG pile composite foundation is used as the foundation of the main canal. The 渠 800 bored piles (support piles) on both sides of the main canal are used. The retaining piles mainly support the soil on both sides of the main canal when excavating the foundation trench of the main canal, Diameter 750mm high pressure jet grouting to stop water, according to the depth of the trunk canal, the project drilling