岩土力学 ›› 2026, Vol. 47 ›› Issue (6): 2015-2027.doi: 10.16285/j.rsm.2025.0656CSTR: 32223.14.j.rsm.2025.0656

• 基础理论与实验研究 • 上一篇    下一篇

微生物诱导碳酸钙沉淀−植被协同防护边坡抗侵蚀机制研究

黄少平1, 2，刘伟浩1，肖衡林3，杨洪4，周昌5，仉文岗6，邢瑞明1   

  1. 1. 湖北工业大学 河湖健康智慧感知与生态修复教育部重点实验室，湖北 武汉 430068；2. 长江勘测规划设计研究有限责任公司 流域水安全保障湖北省重点实验室，湖北 武汉 430071；3. 江汉大学 精细爆破全国重点实验室，湖北 武汉 430056； 4. 英国雷丁大学 地理与环境科学系，英国 雷丁 RG6 6AB；5. 新疆大学 地质与矿业工程学院，新疆 乌鲁木齐 830047； 6. 重庆大学 山区土木工程安全与韧性全国重点实验室，重庆 400045
  • 收稿日期:2025-06-23 接受日期:2025-12-11 出版日期:2026-06-11 发布日期:2026-06-06
  • 通讯作者: 肖衡林，男，1977年生，博士，教授，博士生导师，主要从事环境岩土工程、融雪化冰等方面的研究。E-mail: xiao-henglin@163.com
  • 作者简介:黄少平，男，1989年生，博士，副教授，主要从事环境岩土工程、生态脆弱区生态修复等方面的研究。E-mail: hsp@cug.edu.cn
  • 基金资助:
    国家自然科学基金（No.42407272，No.52578409）；国家自然科学基金联合基金重点项目（No.U22A20232)；湖北省科技厅创新群体项目（No.2025AFA020）；流域水安全保障湖北省重点实验室开放研究基金（No.QTKS0034w25084）。

Anti-erosion mechanisms of microbially induced calcium carbonate precipitation-vegetation synergistic slope protection

HUANG Shao-ping1, 2, LIU Wei-hao1, XIAO Heng-lin3, YANG Hong4, ZHOU Chang5, ZHANG Wen-gang6, XING Rui-ming1   

  1. 1. Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakers, Ministry of Education, Hubei University of Technology, Wuhan, Hubei 430068, China; 2. Hubei Key Laboratory of Basin Water Security, Changjiang Institute of Survey, Planning, Design and Research, Wuhan, Hubei 430071, China; 3. State Key Laboratory of Precision Blasting, Jianghan University, Wuhan, Hubei 430056, China; 4. Department of Geography and Environmental Science, University of Reading, Reading, RG6 6AB, UK; 5. School of Geology and Mining Engineering, Xinjiang University, Urumqi, Xinjiang 830047, China; 6. State Key Laboratory of Safety and Resilience of Civil Engineering in Mountain Area, Chongqing University, Chongqing 400045, China
  • Received:2025-06-23 Accepted:2025-12-11 Online:2026-06-11 Published:2026-06-06
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (42407272, 52578409), the Joint Funds of the National Natural Science Foundation of China (U22A20232), the Innovation Research Group Project of the Hubei Provincial Department of Science and Technology (2025AFA020) and the Project of Hubei Key Laboratory of Basin Water Security (QTKS0034w25084).

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摘要： 我国地形复杂多变、极端气候频发，导致边坡降雨侵蚀加剧。基于此，将植被护坡与微生物诱导碳酸钙沉淀（microbially induced calcium carbonate precipitation，简称MICP）技术相结合，以此增强边坡抗侵蚀性能。通过开展盆栽试验与大型边坡模型降雨试验，结合扫描电镜（scanning electron microscopy，简称SEM）微观试验，综合分析MICP对植被防护边坡径流侵蚀的影响，研究MICP−植被协同防护边坡的抗侵蚀特征及其机制。结果表明：（1）相比于未处理边坡，MICP−植被协同防护边坡的径流量增加，土壤的流失量减少；其中胶结液浓度为0.15 mol/L的防护边坡土壤抗侵蚀效果最优，相比于裸土边坡，径流量、土壤流失量分别降低了12.37%和90.74%，植被覆盖度提升了2.13%。（2）微观分析表明，MICP通过碳酸钙沉淀填补土壤孔隙，且碳酸钙晶体密度随着胶结液浓度提高而增多，增强土壤的黏结性，提高土壤抗剪强度，进而提高了土壤的抗侵蚀能力。（3）MICP−植被协同护坡在植被幼苗期之前以MICP化学胶结主导，在土壤表层快速形成碳酸钙沉淀胶结层加固边坡；植被成熟期后，通过MICP与植被的复合防护机制维持边坡稳定性，从而有效减少水土流失。该研究成果将完善MICP与植被协同护坡技术的理论体系，助力水土流失防治工作。

关键词: 微生物诱导碳酸钙沉淀（MICP）, MICP?植被协同护坡, 植被护坡, 坡面径流, 土壤侵蚀

Abstract: China’s diverse terrain and frequent extreme weather events have exacerbated rainfall-induced erosion on slopes. This study introduces an innovative approach by integrating vegetation with microbially induced calcium carbonate precipitation (MICP) technology to improve slope erosion resistance. Through pot experiments and large-scale slope model rainfall tests, complemented by scanning electron microscopy (SEM) and low-field nuclear magnetic resonance microscopic analyses, this study systematically examined the effects of MICP on runoff erosion in vegetation-protected slopes and investigated the erosion resistance mechanisms of MICP-vegetation cooperative protection systems. The results indicate that: (1) Compared with the untreated slope, MICP-vegetation synergistic protection slightly increased runoff but significantly reduced soil loss. The optimal erosion resistance was achieved with a cementation solution concentration of 0.15 mol/L, which reduced runoff and soil loss by 12.37% and 90.74%, respectively, and increased vegetation coverage by 2.13% compared with the bare slope. (2) Microscopic analysis revealed that MICP fills soil pores through calcium carbonate precipitation, with crystal density increasing proportionally to cementation solution concentration. This process enhances soil cohesion and shear strength, ultimately improving soil erosion resistance. (3) During the pre-seedling stage, slope protection primarily relies on MICP-induced chemical cementation, which quickly forms a calcium carbonate bonding layer on the soil surface to stabilize the slope. After vegetation matures, the combined protection mechanism of MICP and vegetation ensures slope stability and significantly mitigates soil and water loss. These findings advance the theoretical framework of MICP–vegetation synergistic slope protection technology and offer scientific guidance for soil and water conservation efforts.

Key words: microbially induced calcium carbonate precipitation (MICP), MICP-vegetation synergistic slope protection, vegetation slope protection, slope surface runoff, soil erosion

中图分类号: TU43
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