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利用渠道开挖弱膨胀土掺加适量水泥进行均匀拌合,改良土粒性质,选择合适机械碾压,对渠段强膨胀土和淤泥质土进行换填压实,改善渠坡结构,提高地基承载力,是膨胀土地段地基基础处理的有效措施。文章通过生产性试验对水泥改性土换填现场施工提出了可靠的技术参数,在南水北调方城段地基基础处理施工中得到了验证,对类似工程具有一定的借鉴意义。
Use the channel to excavate the weak expansive soil and mix the appropriate amount of cement for uniform mixing to improve the properties of the soil particles. Select the appropriate mechanical roller compaction to replace the compacted expansive soil and silty soil in the canal section, improve the slope slope structure, and improve the foundation Bearing capacity, is an effective measure for foundation treatment of expansive soil section. The article puts forward the reliable technical parameters for the site construction of cement-modified soil by productive test, which has been verified in the foundation treatment of Fangcheng section of South-to-North Water Diversion Project. It is of certain reference significance for similar projects.