Abstract
The deep foundation pit enginerring of Suning Square project in Nanchang, Jiangxi Province adopts SC50 type CSM cement mixing pile machine construction equal thick soil cement mixing wall as the anti-seepage reinforcement curtain. In order to verify the applicability of the CSM method in the deep saturated sand layer in Nanchang area, three non position test wall tests were carried out on site. The test results show that the strength, permeability and impact on the surrounding environment meet the design requirements and achieve the expected prevention. The effect of seepage reinforcement indicates that the CSM construction technology and construction parameters used in the field test are effective and applicable, and can be used as the anti-seepage reinforcement measures for the deep foundation pit engineering, and provide scientific basis and reference for the promotion and application of similar projects.
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