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为了确保滨江沿海地区工农业生产和人民生命财产的安全,解放以来,上海市川沙县海塘做了大量的石方护坡工程,但当地无石料,造价高,且常因运输影响施工,不能保证安全渡汛。因此,1976年起,在张金圩进行塑料护坡试验。一、设计和施工塑料薄膜护坡,设计时要考虑地下水,雨水和高潮渗入堤内的水分是否会使土壤饱和,对薄膜产生渗透反压。经研究认为,每天涨潮时间短,而且张金圩滩面高于一般地下水位,
In order to ensure the safety of the industrial and agricultural production and people’s lives and property in coastal areas along the coast, a lot of stone slope protection works have been carried out in the seawall of Chuansha County in Shanghai since the liberation. However, due to the high cost and the lack of local stone construction, flood. Therefore, since 1976, Zhang Jinwei plastic slope protection test. First, the design and construction of plastic film slope protection, design should consider the groundwater, rain and high tide into the embankment of the water will make the soil saturated, the membrane permeate back pressure. According to the research, the daily high tide time is short, and the Zhang Jinwei beach surface is higher than the general groundwater table,