冻融环境陡立边坡生态修复植生层优化及性能演化

doi:10.3799/dqkx.2025.284

冻融环境陡立边坡生态修复植生层优化及性能演化

doi: 10.3799/dqkx.2025.284

吉林大学建设工程学院, 吉林长春 130026

基金项目:

国家重点研发计划（No. 2023YFC3007102）

详细信息

作者简介:
陈慧娥（1978-），女，教授，主要从事特殊土工程性质及改良处理、土力学、土体微观结构特征等方面的基础应用与研究工作. ORCID: 0000-0003-0073-5480. E-mail: chenhe@jlu.edu.cn

通讯作者:
杜华，助理研究员，主要从事特殊土物理力学及微观结构特征研究. ORCID: 0009-0008-2098-8788. E-mail: duhua@jlu.edu.cn

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出版历程
- 收稿日期: 2025-08-29
- 网络出版日期: 2025-12-29

Research on Optimization of Planting Layer Materials and Performance Evolution in Ecological Restoration of Steep Slopes in Freeze-Thaw Environments

College of Construction Engineering, Jilin University, Changchun 130026, China

摘要

摘要: 为明确陡立边坡生态修复植生层的有效组成及其性质在冻融环境下的演化规律，结合陡立坡面附着试验及植生试验优化植生层配比，通过直剪试验明确冻融条件下土体黏结特性的变化。结果表明，生物炭可提升土体植生性能；添加粘结剂、保水剂后，聚丙烯酰胺的加入不利于植物生长。最优植生层组成为0.8%海藻多糖、1%羧甲基纤维素、1.5%生物炭。冻融20次后基质土黏聚力损失率是重构植生层黏聚力损失率的1.27-2.93倍。低含水率条件有利于冻融过程中土体黏结特性的维持。粘结剂和保水剂形成的胶结结构有效维持了重构植生层的稳定性，使其抗冻融劣化能力显著优于基质土。成果可为季冻区陡立边坡生态修复基材配比及工程防护提供理论依据。
- 生态修复 /
- 陡立边坡 /
- 植生层组成 /
- 冻融循环 /
- 黏聚性 /
- 微观结构
Abstract: To clarify the effective composition of the vegetation layer for ecological restoration of steep slopes and the evolution patterns of vegetation layer properties under freezing-thawing conditions, combined with the attachment test on the steep slope surface and vegetation test, the vegetation layer ratio was optimized. Through direct shear tests, the changes in soil cohesion characteristics under freezing-thawing conditions were clarified. The results show that biochar can improve the vegetation performance of the soil; after adding binder and water-retaining agent, the addition of polyacrylamide is not conducive to plant growth. The optimal vegetation layer composition is 0.8% seaweed polysaccharide, 1% carboxymethyl cellulose, and 1.5% biochar. After 20 freeze-thaw cycles, the loss rate of soil cohesion in the substrate soil is 1.27-2.93 times that of the reconstructed vegetation layer. Low water content conditions are conducive to maintaining the soil cohesion characteristics during the freeze-thaw process. The cohesive structure formed by the binder and water-retaining agent effectively maintains the stability of the reconstructed vegetation layer, and its anti-freeze-thaw deterioration ability is significantly better than that of the substrate soil. The results can provide a theoretical basis for the material ratio of ecological restoration vegetation layer and engineering protection in the seasonally frozen areas for steep slopes.
- ecological restoration /
- steep slope /
- composition of plant layer /
- freeze-thaw cycle /
- cohesion /
- microstructure

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参考文献(56)

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冻融环境陡立边坡生态修复植生层优化及性能演化

doi: 10.3799/dqkx.2025.284

作者简介:
陈慧娥（1978-），女，教授，主要从事特殊土工程性质及改良处理、土力学、土体微观结构特征等方面的基础应用与研究工作. ORCID: 0000-0003-0073-5480. E-mail: chenhe@jlu.edu.cn

通讯作者:
杜华，助理研究员，主要从事特殊土物理力学及微观结构特征研究. ORCID: 0009-0008-2098-8788. E-mail: duhua@jlu.edu.cn

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Research on Optimization of Planting Layer Materials and Performance Evolution in Ecological Restoration of Steep Slopes in Freeze-Thaw Environments

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目录

留言板

冻融环境陡立边坡生态修复植生层优化及性能演化

doi: 10.3799/dqkx.2025.284

作者简介: 陈慧娥（1978-），女，教授，主要从事特殊土工程性质及改良处理、土力学、土体微观结构特征等方面的基础应用与研究工作. ORCID: 0000-0003-0073-5480. E-mail: chenhe@jlu.edu.cn

通讯作者: 杜华，助理研究员，主要从事特殊土物理力学及微观结构特征研究. ORCID: 0009-0008-2098-8788. E-mail: duhua@jlu.edu.cn

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出版历程

Research on Optimization of Planting Layer Materials and Performance Evolution in Ecological Restoration of Steep Slopes in Freeze-Thaw Environments

计量

出版历程

目录

作者简介:
陈慧娥（1978-），女，教授，主要从事特殊土工程性质及改良处理、土力学、土体微观结构特征等方面的基础应用与研究工作. ORCID: 0000-0003-0073-5480. E-mail: chenhe@jlu.edu.cn

通讯作者:
杜华，助理研究员，主要从事特殊土物理力学及微观结构特征研究. ORCID: 0009-0008-2098-8788. E-mail: duhua@jlu.edu.cn