草本植物根系的机械特性和斜坡稳定性的研究
Shilin Tan1, Guoping Xiang2,3, Xiangning Xu1,4
1The 2nd Geological Brigade Of Sichuan, Chengdu, 610041, China.
Scientific reports
|July 10, 2025
概括
这项研究研究了三种草本植物 (Medicago sativa,Iris lactea和Euphorbia hypericifolia) 如何增强矿山斜坡. 优草 (Euphorbia hypericifolia) 由于其根系表现出最显著的土壤巩固效应.
科学领域:
- 地质技术工程 地质技术工程
- 生态工程生态工程生态工程
- 土壤科学 土壤科学
背景情况:
- 根土相互作用对于露天矿山的坡度稳定性至关重要.
- 了解草本植物根的机械特性对于有效地巩固土壤至关重要.
- 之前的根强化模型可能需要针对特定植物物种进行修改.
研究的目的:
- 评估三种草本植物根系 (Medicago sativa,Iris lactea和Euphorbia hypericifolia) 在露天矿山坡上的土壤巩固效应.
- 为了比较和FBM模型在计算根诱导凝聚力时的准确性.
- 通过使用数值建模来研究根深蒂固的斜坡的浅损害保护效应.
主要方法:
- 在选定的植物物种上进行了室内根拉力测试和现场剪切测试.
- 使用Wu和FBM模型来量化根系提供的额外凝聚力.
- 修改后的Wu模型和简化的斜率数值模型被用于评估土壤巩固和斜率保护.
主要成果:
- 根的抗拉强度表现出三种物种的功率功能与根直径的关系.
- 尤福比亚 (Euphorbia hypericifolia) (第3种) 显示出最高的Wu修饰系数 (0.58),这表明它对土壤凝聚力的贡献比Medicago sativa (第1种) 和Iris lactea (第2种) 更大.
- FBM模型比模型更准确地估计了凝聚力的实际增加,修改后的模型显示了更好的性能.
结论:
- 优植物 (Euphorbia hypericifolia) 根的机械和形态特性使其在研究的物种中具有最显著的土壤巩固效应.
- 在评估根源诱导凝聚力方面,FBM模型优于标准的Wu模型.
- 草本植物根系可以有效地提高露天矿山浅坡的稳定性和保护.
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