【摘要】 针对园林与农业工程中土质边坡砌护中混凝土方案投资高、修复难、碳排放量大等问题，开展了微生物诱导碳酸钙沉淀（MICP）技术的固化效果试验研究。以粉质沙壤土为对象，设计5 cm、10 cm、15 cm等3种设计湿润深度，并以清水入渗为对照，于室内土箱（50 cm×40 cm×50 cm）喷洒固结液；28 d后采用普氏贯入仪测定有效固结深度与承载力。结果表明，有效固结深度约为设计湿润深度的70%；承载力随湿润深度增加而提高，但设计湿润深度为10 cm的固结效率最高。MICP技术可显著提升土体强度，10 cm湿润深度兼具高强度与高材料利用率，为生态护坡提供直接设计依据。更多还原

【Abstract】 Aiming at the high cost, difficult repair, and large carbon footprint of concrete revetments for soil slopes in landscaping and agricultural projects, this study explores the strengthening performance of microbially induced calcium carbonate precipitation(MICP). Silty loam was treated in 50 cm×40 cm×50 cm laboratory boxes with designed wetting depths of 5 cm, 10 cm, and 15 cm, with clean water infiltration as the control. After 28 days of curing, a dynamic cone penetrometer was used to measure the effective cemented depth and bearing capacity.Results show that the effective cemented depth was approximately 70% of the designed wetting depth; bearing capacity increased with wetting depth, while the cementation efficiency was the highest at a designed wetting depth of 10 cm. MICP significantly enhances soil strength; a 10 cm wetting depth achieves both high strength and high material utilization efficiency, providing a direct design basis for ecological slope protection.更多还原