使用本土微生物对花岩残留土壤进行生物稳定
Ya Wang1,2,3, Meiqi Li4, Hao Peng4
1School of Civil Engineering and Architecture, Shaanxi University of Technology, Hanzhong, China.
PloS one
|November 10, 2025
概括
使用Bacillus物种的微生物固化增强了花岩残留土壤强度. 细菌细菌和Bacillus tequilensis分别显著改善了内部摩擦角度和凝聚力,提供了环保的土壤改善.
科学领域:
- 地质技术工程 地质技术工程
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 花岩残余土壤具有较差的机械性能,导致斜坡的不稳定性和沉积.
- 微生物固化是一种可持续的方法,可以改善土壤的特性.
研究的目的:
- 为了提高花岩残留土壤的强度,使用生产尿素酶的细菌物种.
- 为了研究凝固溶液度对土壤改善的影响.
主要方法:
- 从当地土壤中提取三种细菌物种 (B. velezensis,B. subtilis,B. tequilensis).
- 进行各种固溶液度的固化实验.
- 通过剪切强度测试,SEM和XRD分析土壤特性.
主要成果:
- 这三种细菌菌株都显著改善了土壤剪切强度.
- 在2mol/L凝固溶液度下发生了最佳改善.
- 细菌细菌最大限度地提高了内部摩擦角度 (+145.32%),而Bacillus tequilensis最大限度地提高了凝聚力 (+316.19%).
- 在较高度下,B. tequilensis和B. velezensis的表现更好.
- SEM和XRD证实碳酸沉结合土壤颗粒.
结论:
- 微生物固化有效地提高了花岩残留土壤的机械性能.
- 细菌物种的选择影响了特定的改善 (摩擦角度与凝聚力).
- 这种方法为工程应用提供了环保和成本效益的解决方案.
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