Microbially Induced Calcite Precipitation (MICP) represents an environmentally friendly and innovative soil grouting technology. Involving intricate biochemical processes, it poses challenges for a thorough investigation of factors influencing microbial grouting effectiveness through experimentation alone. Consequently, A three-dimensional numerical model was developed to predict the permeability of bio-grouting in porous media. The numerical model is validated by comparing its results with test results available in the literature. The validated model is then used to investigate the effects of variation bacterial solution concentration, cementation solution concentration, grouting rate and grouting time on grouting effectiveness. It was founded that the remediation effect was positively correlated with the bacterial solution concentration and the number of grouting. An increased grouting rate enhanced the transport efficiency of reactants. Additionally, the concentration of cementation solution exhibited no significant effect on the reduction of calcium carbonate yield and permeability.

中文翻译：

---

基于生物化学水力模型的MICP处理砂数值分析

微生物诱导方解石沉淀（MICP）代表了一种环保、创新的土壤灌浆技术。它涉及复杂的生化过程，对仅通过实验彻底调查影响微生物灌浆效果的因素提出了挑战。因此，开发了三维数值模型来预测多孔介质中生物灌浆的渗透性。通过将其结果与文献中可用的测试结果进行比较来验证数值模型。然后使用经过验证的模型研究变化细菌溶液浓度、水泥溶液浓度、注浆速率和注浆时间对注浆效果的影响。研究发现，修复效果与菌液浓度、灌浆次数呈正相关。增加的注浆速率提高了反应物的输送效率。此外，胶结液浓度对碳酸钙产率和渗透率的降低没有显着影响。