MICP技术研究进展及在海洋岩土工程的应用展望

Research progress on microbially induced carbonate precipitation technology and prospects of its application in marine geotechnical engineering

介绍了基于尿素水解的微生物诱导碳酸钙沉淀技术(MICP)基本原理;总结了MICP技术在土体加固、文物保护、混凝土裂缝修复、金属污染土修复和海洋岩土工程等领域的室内和现场试验研究;分析了环境pH值、温度、钙盐种类、加固土体颗粒粒径和灌浆方法等因素对MICP技术的影响。MICP技术在岩土工程领域具有广阔的应用前景,但该技术在试验及在实际工程应用领域,特别是在海洋岩土工程领域还存在均匀性、环境适应性、耐久性、经济适用性等方面问题,未来需要对这些问题进行深入的探讨和研究。

The basic principle of microbial\|induced carbonate precipitation technology(MICP technology)based on urea hydrolysis was introduced in detail,and the laboratory and field tests research of MICP technology in soil reinforcement,cultural relic protection,concrete crack repair,metal contaminated soil repair and marine geotechnical engineering were systematically summarized.The effects of environmental pH value,temperature,calcium salt type,particle size of reinforced soil and grouting method on MICP technology were analyzed.MICP technology has broad application prospects in the field of geotechnical engineering,but it still has problems in terms of uniformity,durability,and economic applicability in tests and practical engineering applications,especially in the field of marine geotechnical engineering.These issues need in-depth discussion and research in the future.