Application of Jet Grouting Pile to Strengthen the Weak Soil in Pipe-jacking Project
The first phase of Binhai New Area Water Supply Project,Middle Route of South-North Water Transfer Project,is an important part of the city's water supply and distribution project.The task of the project is to transport raw water from the river to the Binhai New Area of Tianjin.The water delivery Two PCCP pipes with the diameter of 2600 mm were used for water transmission,supplemented partially by steel pipes.The slurry tank of Ziyang Road occupied a large area and had a relatively deep slurry,making it difficult for the pipeline construction.According to the site terrain and geological conditions,the pipe-jacking scheme was adopted by comparison and analysis of multiple schemes,in which mud reinforcement was the key and difficult point.The selection of reinforcement scheme should be not only safe and reliable,but also economical and easy to implement.After analysis and demonstration,the scheme of jet grouting pile was adopted.And the important parameters,such as reinforcement range,pile diameter,pile length and cement content,were determined.
South-to-North Water Transfer ProjectBinhai New Areamud poolpipe-jackingjet grouting pilecement content
万方数据
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