首页|微生物岩土工程技术的过去、现在与未来

微生物岩土工程技术的过去、现在与未来

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  • 国家科技期刊平台
  • NETL
  • NSTL
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微生物岩土工程技术作为一种新兴的生态友好型岩土体改良加固技术,应用前景广阔.但限于理论水平和研究手段,该技术仍存在较多不足,难以实现高效固化,由此成为大规模现场应用的瓶颈.而提升固化效率的关键在于明确其作用原理和影响机制.文章梳理了微生物诱导碳酸钙沉积技术(MICP)的研究现状,系统归纳了固化原理和改良岩土体的物理力学特性,并分析得出固化效率主要受到反应物自身和外部环境两方面的影响.当前MICP技术已初步应用于土体固化、裂缝修复、防渗处理、污染修复及微生物水泥等领域,但由于矿化难以均匀、反应物不经济、微生物及脲酶活性期短且受环境干扰大、代谢产物附带毒性、现场应用性差,该技术目前主要限于实验室水平.作者分别提出了可能的突破与改进方向,并结合实验室成果指出豆粕进行菌体扩培和脲酶供给的碳源优势,以及将磷石膏作为现场钙源的环保性和经济性,以期为从事微生物岩土工程研究与技术开发的人员提供参考.
THE PAST,PRESENT AND FUTURE OF TECHNOLOGY IN MICROBIAL GEOTECHNICAL ENGINEERING
Microbial geotechnical engineering technology,as a novel and eco-friendly approach for rock and soil improvement and reinforcement,holds significant promise.However,constrained by theoretical limitations and re-search methodologies,this technology still faces several shortcomings,hindering its efficient implementation and becoming a bottleneck for large-scale field applications.The key to improving curing efficiency lies in clarifying its underlying principles and influence mechanisms.This paper reviews the current research status of Microbial Induced Calcium Carbonate Precipitation technology(MICP).It systematically summarizes the curing principles and the physical and mechanical properties of improved rock and soil.The analysis suggests that curing efficiency is mainly influenced by the reactant itself and the external environment.While MICP technology has found applications in soil solidification,crack repair,anti-seepage treatment,pollution repair,and microbial cement,it remains limited to laboratory settings due to challenges like homogeneous mineralization,uneconomical reactants,short activity peri-ods,significant environmental interference from microorganisms and urease,incidental toxicity of metabolites,and poor field application.The paper concludes by proposing potential breakthroughs and improvement directions for these shortcomings.It highlights the advantages of using soybean meal for bacterial expansion and urease supply,as well as the environmental friendliness and economy of utilizing phosphogypsum as an on-site calcium source.These suggestions aim to provide reference points for researchers and practitioners engaged in microbial geotechnical engi-neering research and technology development.

Microbial geotechnical engineeringMicrobial geological engineeringMicrobial induced calcium car-bonate precipitation(MICP)Bacillus pasteuriiUreasePhosphogypsum

王双娇、李志清、田怡帆、李燕明、周应新、李丹丹

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中国科学院地质与地球物理研究所,页岩气与地质工程重点实验室,北京 100029,中国

中国科学院大学,北京 100049,中国

中国科学院地球科学研究院,北京 100029,中国

中冶华亚建设集团有限公司,武汉 430083,中国

北京中岩天地科技有限公司,北京 100102,中国

云南省交通投资建设集团有限公司,昆明 650100,中国

云南会巧高速公路有限公司,会泽 654200,中国

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微生物岩土工程 微生物地质工程 微生物诱导碳酸钙沉积 巴氏芽孢杆菌 脲酶 磷石膏

第二次青藏高原综合科学考察研究项目国家重点研发计划项目国家自然科学基金项目云南省科技厅重点研发计划项目

2019QZKK09042019YFC150990342177146202103AA080013

2024

10.13544/j.cnki.jeg.2022-0046

工程地质学报
中国科学院地质与地球物理研究所

工程地质学报

CSTPCD北大核心
影响因子：1.215
ISSN：1004-9665
年,卷(期)：2024.32(1)
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