Applications of microorganisms to geotechnical engineering for bioclogging and biocementation of soil in situ
Applications of microorganisms to geotechnical engineering for bioclogging and biocementation of soil in situ
复制标题
DOI：
10.1007/s11157-007-9126-3
复制
发表时间：
2008-06-01
期刊：
影响因子：
--
通讯作者：
Chu, Jian
中科院分区：
文献类型：
--
作者：
Ivanov, Volodymyr;Chu, Jian
微生物岩土工程学是岩土工程学的一个新的分支，主要研究微生物方法在工程地质材料中的应用。这些应用的目的是改善土壤的机械性能，使其更适合建筑或环境目的。两个值得注意的应用，生物堵塞和生物胶结，已被探讨。生物堵塞是通过微生物手段产生孔隙填充材料，从而降低土壤的孔隙度和导水率。生物胶结是通过微生物作用在原位生成颗粒结合材料，从而增加土壤的抗剪强度。最适合用于土壤生物堵塞或生物胶结的微生物是兼性厌氧和微需氧细菌，尽管厌氧发酵细菌、厌氧呼吸细菌和专性需氧细菌也可能适合用于岩土工程。目前，微生物岩土工程的研究大多处于实验室阶段。由于其复杂性，微生物岩土工程的应用需要微生物学、生态学、地球化学和岩土工程知识的综合。
Microbial Geotechnology is a new branch of geotechnical engineering that deals with the applications of microbiological methods to geological materials used in engineering. The aim of these applications is to improve the mechanical properties of soil so that it will be more suitable for construction or environmental purposes. Two notable applications, bioclogging and biocementation, have been explored. Bioclogging is the production of pore-filling materials through microbial means so that the porosity and hydraulic conductivity of soil can be reduced. Biocementation is the generation of particle-binding materials through microbial processes in situ so that the shear strength of soil can be increased. The most suitable microorganisms for soil bioclogging or biocementation are facultative anaerobic and microaerophilic bacteria, although anaerobic fermenting bacteria, anaerobic respiring bacteria, and obligate aerobic bacteria may also be suitable to be used in geotechnical engineering. The majority of the studies on Microbial Geotechnology at present are at the laboratory stage. Due to the complexity, the applications of Microbial Geotechnology would require an integration of microbiology, ecology, geochemistry, and geotechnical engineering knowledge.