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学者姓名：樊秀峰
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Abstract ：
Although the root can enhance the soil's strength, vegetation cover landslide still occurs frequently under the rainfall. To elucidate the mechanism underlying the degradation of the shear strength of root-soil composites under the influence of moisture, we investigated trees from hilly slopes in southeastern China. The tensile mechanical properties of roots were tested under varying moisture conditions.The results of previous work on the friction characteristics of the root-soil interface under different soil water content were also considered. Furthermore, large-scale direct shear tests were performed to assess the strength characteristics of root-soil composites under different root cross-sectional area ratios (RAR) and moisture contents. Based on the widely used Wu model, and incorporating the failure modes of roots in root-soil composites and the mechanism of root-soil interface friction, a root-soil composite strength degradation model was established considering the effects of moisture. Moisture significantly affected the tensile strength of fine tree roots, with the tensile strength of fine roots being lower in the saturated state than in the fresh state. In contrast, coarse roots were almost unaffected by moisture. As the moisture content increased, the additional strength provided by the roots decreased, and the root efficiency (REp) decreased significantly. The model was validated against experimental data, and the calculated results were accurate. In root-soil composites, as moisture infiltrates, the tensile strength of the roots, soil shear strength, and root-soil interface shear strength decrease to different degrees. This results in reduced resistance to deformation in the root-soil composites, leading to a decrease in its strength.
Keyword ：
Moisture content Moisture content Root reinforcement Root reinforcement Root-soil interface friction Root-soil interface friction Root tensile strength Root tensile strength Strength degradation model Strength degradation model
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| GB/T 7714 | Lin, Yunzhao , Jian, Wenbin , Wu, Yilong et al. Degradation of the mechanical properties of root-soil composites under moisture influence [J]. | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT , 2025 , 84 (3) . |
| MLA | Lin, Yunzhao et al. "Degradation of the mechanical properties of root-soil composites under moisture influence" . | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 84 . 3 (2025) . |
| APA | Lin, Yunzhao , Jian, Wenbin , Wu, Yilong , Zhu, Zuteng , Wang, Hao , Dou, Hongqiang et al. Degradation of the mechanical properties of root-soil composites under moisture influence . | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT , 2025 , 84 (3) . |
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Large flume model tests were conducted to investigate the effects of vegetation on water infiltration and slope deformation under wetting-drying cycles. In total, two flume model tests were carried out, one was planted with Schefflera heptaphylla, and the other bare slope severed as a reference. Plant characteristics, volumetric water content, matric suction, and surface runoff were well documented. Simultaneously, slope deformation during rainfall was analyzed by Particle Image Velocimetry (PIV) technology. The experimental results showed that the growth rate of plant height increased as light intensity increased. At the initial stages, suctions in the shallow soil layers (i.e. 50 mm) of the vegetated slope were smaller than that of the bare slope. However, the suction in the vegetated slope increased as light intensity increased, particularly in the shallow layer (i.e. 150 mm), where it was about 10 kPa larger than that of the bare slope. In addition, vegetation improved the rainfall infiltration rate, which increased with the number of wetting-drying cycles. Under the same condition, the cumulative rainfall infiltration rate of the vegetated slope was approximately twice that of the bare slope. While, the horizontal and vertical deformation rates of the vegetated slope were lower than those of bare slope, respectively. This indicates that vegetation effectively mitigates slope deformation during extreme rainfall and enhances slope stability.
Keyword ：
Deformation Deformation Infiltration rate Infiltration rate Vegetated slope Vegetated slope Wetting-drying cycles Wetting-drying cycles
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| GB/T 7714 | Liu, Hong Wei , Wang, Yu Xin , Huang, Yun et al. Effects of vegetation on hydraulic responses and slope deformation under wetting-drying cycles [J]. | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT , 2025 , 84 (6) . |
| MLA | Liu, Hong Wei et al. "Effects of vegetation on hydraulic responses and slope deformation under wetting-drying cycles" . | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 84 . 6 (2025) . |
| APA | Liu, Hong Wei , Wang, Yu Xin , Huang, Yun , Fan, Xiu Feng , Wang, Hao . Effects of vegetation on hydraulic responses and slope deformation under wetting-drying cycles . | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT , 2025 , 84 (6) . |
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Abstract ：
Landslides frequently occur in heavily vegetated areas of southeast Fujian Province due to typhoon rainstorms. Investigating the failure mechanisms and evolution patterns of landslides influenced by vegetation, rainfall, and strong winds is crucial for disaster mechanism, monitoring, and early warning of typhoon-induced landslides in densely vegetated regions. This study focuses on the Yangxie landslide in Yongtai County, Fujian Province, investigating response patterns and analysis methods for vegetated slope stability under wind-driven rain conditions. Pulling tests on moso bamboo and single-ring infiltration tests were conducted, integrating the Green-Ampt model and infinite side slope model. Detailed main results include: 1) Bamboo’s maximum wind resistance ranges from 18 m/s to 30 m/s, corresponding to wind forces of 8 to 11. 2) Soil infiltration capacity in the windward area increases with wind speed, remaining constant at 0–12 m/s but rising rapidly beyond 12 m/s. 3) The wetting front’s migration speed in the root-soil zone accelerates with increasing wind speed and rainfall. Typhoons disturb soil by swaying vegetation to create preferential flow, mainly accelerating the wetting front’s migration speed. Wind speed significantly impacts soil infiltration capacity under wind, rain, and vegetation interactions. 4) During typhoon rainstorms, wind loads enhance rainfall infiltration in the root-soil zone through vegetation, thereby speeding up the wetting front’s migration. This process is critical for typhoon-induced landslide occurrence and development. © 2024 Biodiversity Research Center Academia Sinica. All rights reserved.
Keyword ：
Aerodynamic loads Aerodynamic loads Bamboo Bamboo Disasters Disasters Infiltration Infiltration Landslides Landslides Rain Rain Slope protection Slope protection Soil testing Soil testing Tropics Tropics Wind stress Wind stress
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| GB/T 7714 | Lin, Bin-Qiang , Zhang, De-Sheng , Jian, Wen-Bin et al. Response of vegetated slope stability under wind-driven rain conditions [J]. | Rock and Soil Mechanics , 2024 , 45 (9) : 2765-2774 . |
| MLA | Lin, Bin-Qiang et al. "Response of vegetated slope stability under wind-driven rain conditions" . | Rock and Soil Mechanics 45 . 9 (2024) : 2765-2774 . |
| APA | Lin, Bin-Qiang , Zhang, De-Sheng , Jian, Wen-Bin , Dou, Hong-Qiang , Wang, Hao , Fan, Xiu-Feng . Response of vegetated slope stability under wind-driven rain conditions . | Rock and Soil Mechanics , 2024 , 45 (9) , 2765-2774 . |
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The tensile strength of roots and the friction characteristics of the root-soil interface of tree species are the indicators that play a crucial role in understanding the mechanism of soil reinforcement by roots. To calculate the effectiveness of the reinforcement of soil by tree roots based on essential influencing parameters, typical trees in the coastal region of southeastern China selected for this study were subjected to tests of the tensile mechanical properties of their roots, as well as studies on the friction characteristics of the root-soil interface and the microscopic interfaces. The results indicated that in the 1-7 diameter classes, the root tensile strength of both Pinus massoniana and Cunninghamia lanceolata was negatively correlated with the root diameter in accordance with the power function. The root tensile strength of these two trees, however, was positively correlated with the lignin content but negatively correlated with cellulose and hemicellulose contents. The shear strength at the root-soil interface and the vertical load exhibited a constitutive relationship, which followed the Mohr-Coulomb criterion. As the root diameter increased, both the cohesion and the friction coefficients at the root-soil interface gradually increased, but the growth rate stood at around 15%. The cohesion value of the root-soil interface of the two trees decreased linearly with the increase in soil moisture content within the range of 25 to 45%. At the microinterface, the root surface of C. lanceolata exhibited concave grooves and convex ridges that extended along the axial direction of roots, with their height differences increasing with the enlargement of the root diameter. The rough surface of P. massoniana roots had areas composed of polygonal meshes, with an increase observed in the mesh density with increasing root diameter.
Keyword ：
chemical composition chemical composition root-soil interface root-soil interface root surface microstructure root surface microstructure tensile strength tensile strength tree roots tree roots
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| GB/T 7714 | Lin, Yunzhao , Jian, Wenbin , Zhu, Zuteng et al. Study on the Mechanical Properties of Roots and Friction Characteristics of the Root-Soil Interface of Two Tree Species in the Coastal Region of Southeastern China [J]. | FORESTS , 2024 , 15 (8) . |
| MLA | Lin, Yunzhao et al. "Study on the Mechanical Properties of Roots and Friction Characteristics of the Root-Soil Interface of Two Tree Species in the Coastal Region of Southeastern China" . | FORESTS 15 . 8 (2024) . |
| APA | Lin, Yunzhao , Jian, Wenbin , Zhu, Zuteng , Wu, Yilong , Wang, Hao , Fan, Xiufeng . Study on the Mechanical Properties of Roots and Friction Characteristics of the Root-Soil Interface of Two Tree Species in the Coastal Region of Southeastern China . | FORESTS , 2024 , 15 (8) . |
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Abstract ：
变密度地下水流系统受水力梯度和密度梯度共同驱动，非线性强，数值模型计算量大，尤其在开展不确定性分析时需要的计算成本很高。常规的数据驱动机器学习方法只能对点监测信息进行模拟分析，不能模拟整个地下水流系统。本研究发展了变密度地下水流降阶模型，利用高斯过程模型对降阶模型的数值误差进行修正组成耦合模型。耦合模型既能克服高斯过程只能模拟有限监测点信息的缺陷，又能提高降阶模型对监测点信息的模拟精度。考虑二维剖面变密度地下水流案例，将渗透系数场设定为空间随机变量，采用基于全阶模型（FSMC）、降阶模型（ROMC）和耦合模型（GP-ROMC）3种蒙特卡罗模拟方法进行不确定分析。研究结果表明：（1）ROMC能替代FSMC开展不确定性分析；（2）水头和盐度的平均相对二范误差与降阶模型维度的关系可用指数函数描述（决定性系数R2≥0.99）；（3）GP-ROMC对监测点信息的模拟精度比ROMC高，GP-ROMC可有效修正降阶模型误差提高蒙特卡罗模拟的精度。研究成果可为地下水建模、不确定性分析、风险评估及参数反演等工作提供重要技术支撑。
Keyword ：
变密度地下水流 变密度地下水流 地下水 地下水 蒙特卡罗模拟 蒙特卡罗模拟 降阶模型 降阶模型 高斯过程 高斯过程
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| GB/T 7714 | 夏传安 , 樊秀峰 , 王浩 et al. 耦合变密度地下水流降阶模型与高斯过程的蒙特卡罗模拟 [J]. | 水文地质工程地质 , 2024 , 51 (5) : 1-13 . |
| MLA | 夏传安 et al. "耦合变密度地下水流降阶模型与高斯过程的蒙特卡罗模拟" . | 水文地质工程地质 51 . 5 (2024) : 1-13 . |
| APA | 夏传安 , 樊秀峰 , 王浩 , 简文彬 . 耦合变密度地下水流降阶模型与高斯过程的蒙特卡罗模拟 . | 水文地质工程地质 , 2024 , 51 (5) , 1-13 . |
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毛竹在闽东南丘陵山地广泛分布,为了研究闽东南特色植被毛竹的根土复合体抗拔与抗剪性能及其对斜坡稳定性的影响,在福州市永泰县岭路乡庄边村滑坡区,使用自行研发的专利仪器对不同直径的毛竹进行原位整株拉拔试验与原位剪切试验;使用万能试验机对现场根土复合体中不同直径根系进行单根拉拔试验.结果表明:在抗拉性能上,毛竹的直径大小会影响到毛竹整株拉拔的强度,随着直径增大其极限整株抗拉强度与抗剪强度均提升,毛竹竹鞭与丝根具有有效抗拔作用;毛竹单根根系的直径与极限抗拉力呈线性正相关,与抗拉强度呈负相关;在抗剪性能上,毛竹直径与根土复合体抗剪强度呈正相关.研究成果对分析毛竹根土复合体力学性能,揭示竹林斜坡成灾机制,提高植被护坡效益具有重要的理论及实际意义.
Keyword ：
抗拔 抗拔 根土复合体 根土复合体 根系 根系 毛竹 毛竹 边坡稳定 边坡稳定
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| GB/T 7714 | 钟鑫 , 简文彬 , 樊秀峰 et al. 基于现场原型测试的毛竹根土复合体力学性能研究 [J]. | 自然灾害学报 , 2024 , 33 (5) : 38-47 . |
| MLA | 钟鑫 et al. "基于现场原型测试的毛竹根土复合体力学性能研究" . | 自然灾害学报 33 . 5 (2024) : 38-47 . |
| APA | 钟鑫 , 简文彬 , 樊秀峰 , 吴宜龙 , 林昀昭 , 张骏逸 . 基于现场原型测试的毛竹根土复合体力学性能研究 . | 自然灾害学报 , 2024 , 33 (5) , 38-47 . |
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Abstract ：
本发明涉及一种水头变动下颗粒迁移特征及优先流路径形成模拟装置，包括渗流土柱模型、水头调节组件、收集组件；水头调节组件包括机架、水箱、承重台，机架上竖直安装有丝杆及竖导杆，竖导杆套设在承重台四个角部，承重台套设在丝杆上并与之螺纹配合，水箱放置在承重台上，水箱出水口经供水管路的连接渗流土柱模型；本装置能模拟在相同水力条件下，不同级配碎石土饱和渗流试验优先流路径形成的过程，利用水头调节组件实现水头的稳定变化；本能模拟在相同水力条件下，细颗粒迁移对碎石土优先流路径形成的影响。观察不同水头下细颗粒迁移，记录实验现象，并收集细颗粒流失量及渗流量，进行对比分析。
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| GB/T 7714 | 樊秀峰 , 王晓摇 , 吴振祥 et al. 水头变动下颗粒迁移特征及优先流路径形成模拟装置 : CN202111644690.0[P]. | 2021-12-30 00:00:00 . |
| MLA | 樊秀峰 et al. "水头变动下颗粒迁移特征及优先流路径形成模拟装置" : CN202111644690.0. | 2021-12-30 00:00:00 . |
| APA | 樊秀峰 , 王晓摇 , 吴振祥 , 吕澄浒 . 水头变动下颗粒迁移特征及优先流路径形成模拟装置 : CN202111644690.0. | 2021-12-30 00:00:00 . |
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本发明公开了一种基于非饱和土体电导率的浅层降雨型滑坡预警方法，具体包括：根据现场勘察确定滑坡范围，通过试验确定土体物理力学参数，建立监测站，将含水率、电导率、基质吸力和温度数据上传到监测云平台；根据监测数据建立VG模型、电导率‑含水率关系模型和电导率‑基质吸力关系模型；推导基于土体电导率的降雨型滑坡稳定性计算公式，再根据所得结果对比预警指标实现监测预警。本发明从水文、电导、温度、力学、滑坡机理等多个维度全面、客观地反映了降雨诱发型滑坡的动态演化过程，揭示了滑坡内土壤在水‑电‑力学性质间的联系，从土壤电学的角度观察了降雨诱发型滑坡的发生机理，为滑坡监测预警提供了一种新的方法。
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| GB/T 7714 | 简文彬 , 陈瑞敏 , 豆红强 et al. 一种基于非饱和土体电导率的浅层降雨型滑坡预警方法 : CN202210553232.4[P]. | 2022-05-19 00:00:00 . |
| MLA | 简文彬 et al. "一种基于非饱和土体电导率的浅层降雨型滑坡预警方法" : CN202210553232.4. | 2022-05-19 00:00:00 . |
| APA | 简文彬 , 陈瑞敏 , 豆红强 , 樊秀峰 , 林昀昭 . 一种基于非饱和土体电导率的浅层降雨型滑坡预警方法 : CN202210553232.4. | 2022-05-19 00:00:00 . |
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高植被覆盖区台风暴雨型滑坡具有显著的群发、突发和高隐蔽特性,面对日益增加的防灾减灾需求,如何科学地揭示其成灾机制并构建智能预警模型正成为当前研究的热点和前沿问题.文中首先以浙闽两省频发的台风暴雨型滑坡为例,系统总结了其地貌地质、时空分布和上覆植被等发育特征.其次,从台风暴雨型滑坡成灾机制、植被对斜坡稳定性影响及台风暴雨型滑坡的预警预报等3个方面重点梳理并剖析了当前研究现状,强调指出当前有关高植被覆盖区台风暴雨型滑坡的研究仍存在台风-暴雨共同作用下植被发育斜坡的水文动态响应刻画不足、成灾机制仍不清晰以及由此导致滑坡稳定性评价方法缺乏针对性、已有预警模型精细化、精准化预警不足等亟待解决的深层次问题.最后,建议未来研究亟需聚焦地质-植被-气象的相互作用,查明高植被覆盖区台风暴雨型滑坡的孕灾环境与其发育规律,明确台风暴雨下植被发育斜坡的水文响应规律,揭示其失稳演化过程与成灾机制,建立台风暴雨过境全过程的时空预警模型.文中旨在为台风暴雨型滑坡的研究开辟新的视角和研究思路,进而为全球高植被覆盖区台风暴雨型滑坡的预警与防控提供科学决策和技术支撑.
Keyword ：
台风暴雨 台风暴雨 成灾机制 成灾机制 滑坡 滑坡 预警 预警 高植被覆盖区 高植被覆盖区
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| GB/T 7714 | 豆红强 , 简文彬 , 王浩 et al. 高植被覆盖区台风暴雨型滑坡成灾机制及预警模型研究综述 [J]. | 自然灾害学报 , 2023 , 32 (2) : 1-15 . |
| MLA | 豆红强 et al. "高植被覆盖区台风暴雨型滑坡成灾机制及预警模型研究综述" . | 自然灾害学报 32 . 2 (2023) : 1-15 . |
| APA | 豆红强 , 简文彬 , 王浩 , 樊秀峰 , 刘红位 , 吴振祥 . 高植被覆盖区台风暴雨型滑坡成灾机制及预警模型研究综述 . | 自然灾害学报 , 2023 , 32 (2) , 1-15 . |
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滑坡位移预测一直是滑坡研究的热点之一.近年来,随着计算机科学的发展,越来越多的人工智能技术模型被用于滑坡位移的预测.相较于常用的如LSTM神经网络等机器学习模型,集成算法中的XGBoost模型在滑坡位移预测领域尚不多见.由于其在滑坡位移预测中具有预测精度更高、运行速度更快等优点,目前在学术界已成为研究的热点领域.文中以泉州市安溪县尧山村滑坡地灾点监测数据为例,运用Python搭建XGBoost模型,并通过最大信息系数的比较来选定与位移高度相关的特征,输入至模型中对滑坡位移进行预测.结果表明,XGBoost模型因其在目标函数中引入正则项来控制模型过拟合、模型数据集划分采用前向验证方式等优点,相较于大多数机器学习模型,能更加准确地预测降雨诱发阶跃型滑坡位移.该模型对此类滑坡的位移预测及早期监测预警具有重要参考意义.
Keyword ：
XGBoost模型 XGBoost模型 位移预测 位移预测 最大信息系数 最大信息系数 机器学习 机器学习 阶跃型滑坡 阶跃型滑坡
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| GB/T 7714 | 黄智杰 , 沈佳 , 简文彬 et al. 基于XGBoost模型的降雨诱发阶跃型滑坡位移预测 [J]. | 自然灾害学报 , 2023 , 32 (2) : 217-226 . |
| MLA | 黄智杰 et al. "基于XGBoost模型的降雨诱发阶跃型滑坡位移预测" . | 自然灾害学报 32 . 2 (2023) : 217-226 . |
| APA | 黄智杰 , 沈佳 , 简文彬 , 樊秀峰 , 聂闻 . 基于XGBoost模型的降雨诱发阶跃型滑坡位移预测 . | 自然灾害学报 , 2023 , 32 (2) , 217-226 . |
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