在受控的湿度条件下,Setaria viridis和Panicum bisulcatum Thunb根的生态工程对斜坡稳定性的影响
Jinguo Lyu1,2, Yanli Zhang1, Te Dai3
1School of Mechanics and Engineering, Liaoning Technical University, Fuxin, 123000, Liaoning, China.
Scientific reports
|November 18, 2025
概括
草本植物根通过增加土壤凝聚力和剪切强度来增强浅坡的稳定性. 最佳的水分含量至关重要,因为过多的水减少了这些好处,影响了采矿区的生态恢复.
科学领域:
- 环境科学 环境科学
- 地质技术工程 地质技术工程
- 土壤科学 土壤科学
背景情况:
- 在采矿区,斜坡的稳定性至关重要,特别是在生态恢复方面.
- 草本植物在加强土壤和控制侵蚀方面发挥着至关重要的作用.
- 了解不同湿度条件下的根土相互作用,对于有效的斜坡保护至关重要.
研究的目的:
- 为了研究草本植物根 (Panicum bisulcatum Thunb, Setaria viridis) 在露天煤矿中的斜坡保护作用.
- 分析植物根对土壤稳定性和防滑性能的机械贡献.
- 评估土壤水分含量对根土复合物质和坡度稳定性的影响.
主要方法:
- 在不同土壤深度对根含量的现场测量.
- 根强化和抗滑动效应的理论分析.
- 在不同的湿度条件下对根土切割强度的实验室测试.
- 在不同湿度场景下进行斜坡保护的数值模拟.
主要成果:
- 草根显著增加了土壤凝聚力和剪切强度,限制了横向变形.
- 凝聚力和剪切强度随着水分含量的增加而下降;内部摩擦角略有增加.
- 斜坡稳定因子在降低之前达到9-13%的水分含量.
结论:
- 草本植物为改善浅斜坡的稳定性提供了巨大的潜力.
- 在采矿区内的生态恢复和斜坡保护中有效应用是可行的.
- 土壤水分含量是影响植物性斜坡稳定功效的关键因素.
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