Fracture sealing based on microbially induced carbonate precipitation and its engineering applications: A review

Abstract

In this review, the development and application of microbially induced carbonate precipitation (MICP) technology for the sealing of underground engineering fractures are discussed in detail. The importance of sealing micro-fractures in an environmentally friendly and efficient manner is emphasized, and the potential of the MICP method in controlling pore and fracture seepage is highlighted. The fundamental mechanisms, key influencing factors, numerical models, and applications of the MICP in the fields of geological CO₂ storage and oil resources development are comprehensively summarized in the paper. At the same time, the limitations of the existing research and the future research directions are discussed, especially in terms of improving the processing efficiency, environmental impacts, and cost considerations. Overall, the development of MICP technology provides a new environmentally friendly reinforcement method for geotechnical engineering and is expected to play a key role in the future development of underground space engineering.

Keywords

Microbially induced carbonate precipitation (MICP) / Fracture sealing / Bio-grouting / Engineering applications

CRediT authorship contribution statement

Zhichao Song: Writing - original draft, Investigation, Formal analysis, Data curation, Conceptualization. Chuangzhou Wu: Writing - review & editing, Writing - original draft, Methodology, Funding acquisition. Zuoyong Li: Writing - original draft, Visualization, Validation, Resources, Methodology. Danyi Shen: Writing - review & editing, Supervision, Project administration, Methodology.

Declaration of Competing Interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Chuangzhou Wu is an editorial board member for Biogeotechnics and was not involved in the editorial review or the decision to publish this article.

Acknowledgments

The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (No. 42177141).

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