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新槎浦套闸工程位于嘉定县新槎浦河口,临吴松江。(?)潮汐河口,水位变幅大,工程范围内2米高程以下土层为极细粉砂土。套闸工程设计年吞吐量为600万吨,通行100吨级驳船船队,船行波较大。为确保块石护坡稳定,防止粉砂被吸出,碎石护坡下需放反滤层保护。本工程引航道长500米,两岸护坡共长1000米,原设计砂石反滤层,从下至上设置d_(50)=0.25毫米黄砂垫层15厘米,d_(50)=2～2.5毫米砾石垫层15厘米;
The new Xupu sets of gates project is located in Jiading County, the new Xupu estuary, Wu Songjiang. (?) Tidal estuary, large water level changes, within the scope of the project 2 m elevation below the soil is extremely fine silt. Set gate engineering design annual throughput of 6 million tons, the passage of 100-ton barge fleet, shipping line wave larger. In order to ensure the stability of block stone slope and prevent the silt being sucked out, it is necessary to put anti-grading protection under the gravel slope. The main navigation channel of this project is 500 meters long, with a total length of 1000 meters for slope protection across the Strait. The original designed sandstone anti-filtration layer is set with a d_ (50) = 0.25mm yellow sand cushion 15cm from the bottom to the top d_ (50) = 2 ~ 2.5mm gravel Cushion 15 cm;