土工基础 ›› 2026, Vol. 40 ›› Issue (1): 123-128.

• 测试技术 • 上一篇    下一篇

EICP 技术加固软土的物理力学性质分析

黄丹宁,宋献杰,曹周杰   

  1. (汕头大学,广东汕头 515063)
  • 收稿日期:2023-10-08 修回日期:2023-11-06 出版日期:2026-02-28 发布日期:2026-04-22
  • 作者简介:黄丹宁(1996-),男,硕士研究生,研究方向为岩土工程。

Physical and Mechanical Properties of Soft Soil Improved by EICP Method

HUANG Danning, SONG Xianjie, CAO Zhoujie   

  • Received:2023-10-08 Revised:2023-11-06 Online:2026-02-28 Published:2026-04-22

摘要: 为探究不同因素对EICP技术加固软土的物理力学性质的影响,设置养护时间、胶结液浓度、脲酶酶活为试验变量进行试验对比。通过测量不同试验方案下土样密度、含水率、抗剪强度等物理、力学性质指标,分析不同因素对EICP技术加固软土效果的影响。试验结果表明,在EICP作用过程中,因脲酶消耗水分、产生碳酸钙晶体、与土颗粒产生胶结作用,导致EICP技术加固后的软土密度增加、含水率下降、抗剪强度上升。EICP技术能有效提高软土的物理、力学性能,不同的试验变量对土体的加固效果有不同程度的影响,可为日后的工程提供理论依据和试验支撑。

关键词: EICP, 密度, 含水率, 抗剪强度, 软土加固

Abstract: To explore the influence of different factors on the physical and mechanical properties of soft soil improved by enzyme induced carbonate precipitation (EICP) method, curing time, adhesive liquid concentration and urease enzyme activity are established as test variables for comparative study. By measuring the physical and mechanical properties of soil samples under different test options, the influence of different factors on the effect of soft soil by EICP method is analyzed. The test results show that in the process of EICP, urease consumes water, produces calcium carbonate crystals and cemented with soil particles, which slightly increased the density, decreases the water content and increases the shear strength of the soft soil after EICP improvement. EICP method can effectively improve the physical and mechanical properties of soft soils. Different test variables have different effects on the improvement effect of soil, which can provide theoretical basis and test support for future projects.

Key words: Enzyme Induced Carbonate Precipitation, Density, Moisture Content, Shear Strength, Soft Soil Improvement

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