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学者姓名：豆红强
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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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多支盘锚杆是新近研发的新型锚杆,具有抗拔承载力高、鲁棒性强和灵活性强等优点.为了进一步掌握多支盘锚杆的抗拔承载性能,本文在多支盘锚杆室内模型试验研究基础上,开展了现场边坡锚固原型试验.结果表明,相较于普通锚杆,单支盘锚杆盘径从300 mm增大到500 mm时,抗拔承载力分别提高35.7％、50％、71.4％,变形控制能力也相应增强;在粉质黏土中,双支盘锚杆可以到达更大的抗拔承载力,支盘间距≥4倍支盘直径时更能充分发挥两个支盘的协同作用;随着支盘个数从1个增多到3个,多支盘锚杆锁紧的地层范围越大,多支盘锚杆的抗拔承载力及变形控制能力也相应增强;多支盘锚杆的荷载-位移关系符合双曲线模型,可以用于预测多支盘锚杆的承载力.研究成果可以为多支盘锚杆的工程应用奠定了较良好的理论基础.
Keyword ：
原型试验 原型试验 双曲线模型 双曲线模型 多支盘锚杆 多支盘锚杆 拉拔试验 拉拔试验 极限承载力 极限承载力
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| GB/T 7714 | 黄炜 , 简文彬 , 杨坚 et al. 新型多支盘土锚的承载性能研究 [J]. | 工程地质学报 , 2025 , 33 (2) : 772-782 . |
| MLA | 黄炜 et al. "新型多支盘土锚的承载性能研究" . | 工程地质学报 33 . 2 (2025) : 772-782 . |
| APA | 黄炜 , 简文彬 , 杨坚 , 豆红强 , 罗金妹 . 新型多支盘土锚的承载性能研究 . | 工程地质学报 , 2025 , 33 (2) , 772-782 . |
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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 upper bound theorem (UBT) is widely used in the stability analysis of geosynthetic-reinforced slopes (GRSs). However, the existing research seldom considers multiple potential failure mechanisms when using the UBT to design GRSs. First, based on the upper bound theorem of limit analysis, considering multiple failure modes of GRSs, a translation slicing mechanism was constructed. The implicit equation aiming at the safety factor of GRSs was derived, and a simple and effective discrete iteration method was proposed. Second, the rationality of the method proposed in the paper was verified by comparing the existing examples and calculation methods of GRSs. The results showed that the method can consider multiple potential failure modes of GRSs and accurately determine the critical slip surface and minimum safety factor. Finally, the method examined the influences of soil mechanical parameters, reinforcement distribution patterns, and geosynthetic-reinforcement parameters on the critical failure mechanisms and corresponding minimum safety factors. The results showed that when the multiple potential failure mechanisms of GRSs are fully considered, the critical slip surface may not only be sheared from the slope toe for different distribution patterns. It further showed that it is necessary to consider multiple potential failure mechanisms in the design of GRSs. The interval of external critical failure of GRSs increased with the increase of soil cohesion and decreased with the increase of slope angle and internal friction angle. The interval of the internal critical failure of GRSs increased with the increase of slope angle and internal friction angle. The research results provide a novel idea and theoretical support for the stability calculation of GRSs.
Keyword ：
Geosynthetic-reinforced slopes Geosynthetic-reinforced slopes Potential failure mechanisms Potential failure mechanisms Safety factor Safety factor Stability analysis Stability analysis Upper bound theorem Upper bound theorem
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| GB/T 7714 | Li, Peng-Yu , Dou, Hong-Qiang , Nie, Wen-Feng . Stability Analysis of Geosynthetic-Reinforced Slopes Considering Multiple Potential Failure Mechanisms Based on the Upper Bound Theorem [J]. | INTERNATIONAL JOURNAL OF GEOMECHANICS , 2024 , 24 (2) . |
| MLA | Li, Peng-Yu et al. "Stability Analysis of Geosynthetic-Reinforced Slopes Considering Multiple Potential Failure Mechanisms Based on the Upper Bound Theorem" . | INTERNATIONAL JOURNAL OF GEOMECHANICS 24 . 2 (2024) . |
| APA | Li, Peng-Yu , Dou, Hong-Qiang , Nie, Wen-Feng . Stability Analysis of Geosynthetic-Reinforced Slopes Considering Multiple Potential Failure Mechanisms Based on the Upper Bound Theorem . | INTERNATIONAL JOURNAL OF GEOMECHANICS , 2024 , 24 (2) . |
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The infiltration-runoff process plays a crucial role in hydrological studies. The influences of rainfall patterns and slope gradients on the infiltration-runoff process are not yet fully understood, particularly under field conditions. In-situ monitoring and experiments were conducted to investigate the effects of a uniform rainfall pattern (UR, q = 17.5 mm h- 1 and q = 35 mm h- 1), the Chicago rainfall pattern (CR), and different slopes (beta = 5 degrees and 25 degrees) on the infiltration, runoff, and sediment yield. The CR pattern is a mathematical model used to simulate natural rainfall based on historical rainfall data for a specific region. The results show that the response times of both the volumetric water content (VWC) and matric suction are directly proportional to depth, whereas their magnitudes are inversely proportional. The soil water characteristic curve (SWCC) obtained using the van Genuchten (vG) model can be established based on monitoring data for the drying path. The rainwater transformation is altered by the CR pattern, prolonging the initial runoff time and reducing rainfall infiltration. The infiltration and runoff rate curves, which mirror the rainfall pattern, exhibit peak values that increase both the cumulative runoff and sediment yield. The runoff rate, shear stress, and hydraulic power are significantly increased by increasing the slope angle. This positively contributes to the runoff and sediment yield and reduces the rainfall infiltration. The soil water profile during infiltration can be qualitatively divided into three stages. A time correction parameter, which is highly related to the initial runoff time, is incorporated into the Kostiakov model to more precisely predict the infiltration process. This paper presents a novel approach for applying the CR pattern to hillslope hydrology. Our findings improve the understanding of the effects of rainfall patterns and gradients on rainwater transformation and sediment yield and provide a scientific reference for hydrological modelling.
Keyword ：
Artificial rainfall Artificial rainfall Chicago rainfall pattern Chicago rainfall pattern Rainfall response Rainfall response Runoff analysis Runoff analysis Unsaturated soil Unsaturated soil
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| GB/T 7714 | Chen, Ruimin , Dou, Hongqiang , Lin, Yunzhao et al. In-situ infiltration-runoff characterization of slopes under the influences of different rainfall patterns and slope gradients [J]. | CATENA , 2024 , 247 . |
| MLA | Chen, Ruimin et al. "In-situ infiltration-runoff characterization of slopes under the influences of different rainfall patterns and slope gradients" . | CATENA 247 (2024) . |
| APA | Chen, Ruimin , Dou, Hongqiang , Lin, Yunzhao , Liu, Qingling , Jian, Wenbin . In-situ infiltration-runoff characterization of slopes under the influences of different rainfall patterns and slope gradients . | CATENA , 2024 , 247 . |
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Taking a large-scale photovoltaic power station in alpine and high-altitude area with flat uniaxial photovoltaic racking system as the background，relying on ABAQUS finite element simulation software，we constructed an integrated three-dimensional finite element model of large-span flat uniaxial photovoltaic bracketing-foundation-panel，explored the loading characteristics of the key components of the flat uniaxial photovoltaic tracking system and the mechanism of instability deformation in an extreme environment，and provided the targeted optimization design suggestions. The results show that，under extreme wind load，the maximum stress of purlins in this large-span PV system reaches 544.4 MPa and the maximum displacement of columns reaches 76.3 mm at the maximum tracking angle，resulting in the potential risk of yield damage of local purlins and H-type steel piles；the deformations of superstructure members are related to their locations，and the overall performance shows that they are distributed in a wavy pattern along the long axis of the main girder，the mid-span position of the two columns also has a large displacement. The maximum deformation under wind load is even 153.2 mm，which is most obvious at the cantilever end of the PV module，and it is proposed to enhance the strength of the local components or change the local structural characteristics to enhance the overall stability of the large-span flat uniaxial tracking PV system. © 2024 Science Press. All rights reserved.
Keyword ：
ABAQUS ABAQUS Aerodynamic loads Aerodynamic loads Beams and girders Beams and girders Columns (structural) Columns (structural) Digital elevation model Digital elevation model Hydraulic structures Hydraulic structures Hydroelasticity Hydroelasticity Piles Piles Structural analysis Structural analysis Structural dynamics Structural dynamics Wind stress Wind stress
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| GB/T 7714 | Wang, Longwei , Li, Ru , Dou, Hongqiang et al. LOADING PERFORMANCES AND OPTIMAL DESIGN OF BRACKET-FOUNDATION OF FLAT UNIAXIAL PHOTOVOLTAIC TRACKERS [J]. | Acta Energiae Solaris Sinica , 2024 , 45 (10) : 345-353 . |
| MLA | Wang, Longwei et al. "LOADING PERFORMANCES AND OPTIMAL DESIGN OF BRACKET-FOUNDATION OF FLAT UNIAXIAL PHOTOVOLTAIC TRACKERS" . | Acta Energiae Solaris Sinica 45 . 10 (2024) : 345-353 . |
| APA | Wang, Longwei , Li, Ru , Dou, Hongqiang , Xie, Senhua . LOADING PERFORMANCES AND OPTIMAL DESIGN OF BRACKET-FOUNDATION OF FLAT UNIAXIAL PHOTOVOLTAIC TRACKERS . | Acta Energiae Solaris Sinica , 2024 , 45 (10) , 345-353 . |
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突发性自然灾害经常对大型工程的建筑与生产设施造成重大损失,而受损设施的维修和重建过程常出现物资供给不足、物资供给效率低以及物资分配公平性等问题.本文以某大型光伏电站为依托,从应急物资节点选址影响因素入手,建立受突发性灾害作用后的应急物资节点选址评价指标系统,采用AHP-CRITIC(analyt-ic hierarchy process-criteria importance through intercriteria correlation)组合赋权法实现应急物资存放点选址评价结果的计算.同时,基于研究区内部路网开展大型光伏场地路口至多物资存储节点的最优路径研究,并采用GIS(geographic information system)技术求解出最短运输路径.结果表明:该大型光伏场地应急物资节点选址评价结果等级为"好"与"较好"的区域主要分布在研究区北部,占总面积的33.38%;基于最短运输路径原则通过综合对比线路总长与重复路线占比,由入口3出发至各应急物资节点的路径为最优路线.研究成果可为类似大型工程的安全运营和应急管理提供技术支持和参考.
Keyword ：
GIS GIS 光伏电站 光伏电站 应急物资 应急物资 最优路线选取 最优路线选取 节点选址 节点选址
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| GB/T 7714 | 林爱军 , 李如 , 豆红强 et al. 基于AHP-CRITIC和GIS的大型光伏电站应急物资节点选址与最优路线选取 [J]. | 科技通报 , 2024 , 40 (7) : 38-45 . |
| MLA | 林爱军 et al. "基于AHP-CRITIC和GIS的大型光伏电站应急物资节点选址与最优路线选取" . | 科技通报 40 . 7 (2024) : 38-45 . |
| APA | 林爱军 , 李如 , 豆红强 , 黄思懿 . 基于AHP-CRITIC和GIS的大型光伏电站应急物资节点选址与最优路线选取 . | 科技通报 , 2024 , 40 (7) , 38-45 . |
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Recent advances have significantly enhanced dynamic early warning systems for rainfall-induced landslides by integrating rainfall thresholds with susceptibility mapping. However, there is still room for optimizing these models for regional-scale applications. This study introduces a dynamic early warning model in Anxi County, Fujian Province, China-a region prone to rainfall-induced landslides. First, historical landslide data and their controlling factors were analyzed for the study area, and an optimal landslide susceptibility map was produced by integrating an information value model with a logistic regression model. Second, based on the theory of effective rainfall, the regional rainfall threshold model was established according to the indices of daily and hourly rainfall, and the model's accuracy was evaluated. Third, the more effective E-D (daily index) and EE-D (hourly index) models were coupled with the landslide susceptibility map for landslide dynamic early warning. The model's validation results show its significant predictive capabilities, with the hourly model proving more accurate for short-duration rainfall events. This study provides valuable insights for local authorities on dynamic early warning for rainfall-induced landslides and offers guidance for refining dynamic early warning systems in similar regions.
Keyword ：
dynamic early warning model dynamic early warning model Landslide susceptibility Landslide susceptibility rainfall-induced landslide rainfall-induced landslide rainfall threshold rainfall threshold
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| GB/T 7714 | Dou, Hongqiang , Chen, Yongda , Sun, Yongxin et al. Regional dynamic early warning model for rainfall-induced landslide in Fujian, China [J]. | GEOMATICS NATURAL HAZARDS & RISK , 2024 , 15 (1) . |
| MLA | Dou, Hongqiang et al. "Regional dynamic early warning model for rainfall-induced landslide in Fujian, China" . | GEOMATICS NATURAL HAZARDS & RISK 15 . 1 (2024) . |
| APA | Dou, Hongqiang , Chen, Yongda , Sun, Yongxin , Guo, Chaoxu . Regional dynamic early warning model for rainfall-induced landslide in Fujian, China . | GEOMATICS NATURAL HAZARDS & RISK , 2024 , 15 (1) . |
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To investigate the influence of tree roots on the triggering mechanism of shallow landslides, this study focused on a typical vegetation-covered cluster landslide in the Wuping area of China. A tree root profile investigation and a double-ring infiltration test were conducted. The undisturbed soil samples were collected for laboratory tests to measure the influence of tree vegetation on soil physical and hydraulic properties. The root reinforcement effect is limited by the depth of root distribution, with over 90% of the roots situated above the slip surface. The presence of roots increases the resistance of the soil to disintegration. The soil disintegration in the 0-80 cm layer was less than 25% after 24 h of water immersion and the soil undergoes complete disintegration at a depth of 180-200 cm within 120 s. Tree roots facilitate the infiltration of soil, and Ks at 0 m was 11.21 times than that at 2 m, and the interface between soils with roots and soils without roots may become a sliding surface. Under extreme rainfall conditions, the root system promotes water infiltration, accelerates the softening and disintegration of the soil on the sliding surface, which adversely affects the stability of landslides.
Keyword ：
disintegration disintegration heavy rainfall heavy rainfall hydraulic property hydraulic property root-soil root-soil Shallow landslide Shallow landslide
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| GB/T 7714 | Lin, Yunzhao , Jian, Wenbin , Wu, Yilong et al. Effect of tree roots on heavy rainfall-induced shallow landslides [J]. | GEOMATICS NATURAL HAZARDS & RISK , 2024 , 15 (1) . |
| MLA | Lin, Yunzhao et al. "Effect of tree roots on heavy rainfall-induced shallow landslides" . | GEOMATICS NATURAL HAZARDS & RISK 15 . 1 (2024) . |
| APA | Lin, Yunzhao , Jian, Wenbin , Wu, Yilong , Zhu, Zuteng , Wang, Hao , Dou, Hongqiang et al. Effect of tree roots on heavy rainfall-induced shallow landslides . | GEOMATICS NATURAL HAZARDS & RISK , 2024 , 15 (1) . |
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Due to rainfall, the soil-rock differential weathering interface of spherical weathered granite soil slopes is prone to evolve into a dominant seepage channel and undergo seepage suffosion, which accelerates the deformation and instability of these slopes. However, little research has been carried out on the characteristics of seepage suffosion and the migration of fine particles. Based on the unsaturated seepage theory of porous media, a numerical calculation framework is established to accurately describe the seepage suffosion process at the soil-rock interface, considering the coupling relationship between the fine particle migration, suffosion initiation response and unsaturated seepage. The finite element method is used to construct a seepage suffosion model for unsaturated granite residual soil under the effect of dominant flow. Based on the seepage suffosion process of homogeneous soil columns, the suffosion characteristics of dominant flow under three typical soil-rock interface burial states are systematically investigated. The results show that the soil-rock interface and the matrix permeability of spherical weathered granite soil slopes are highly variable, with the wetting front forming a downward depression infiltration funnel, and the degree of depression of the wetting front becomes more pronounced as rainfall continues. The degree of fine particle loss is related to the burial state of the soil-rock interface, in which the dominant flow potential suffosion of the under-filled soil condition is the most significant, and even excess pore water pressure occurs at the interface, which is the most unfavorable to the stability of this type of slope. The research results can provide a scientific basis for accurately evaluating the stability of spherical weathered granite soil slopes under rainfall conditions. © 2024 Biodiversity Research Center Academia Sinica. All rights reserved.
Keyword ：
Biodiversity Biodiversity Finite element method Finite element method Groundwater flow Groundwater flow Interface states Interface states Porous materials Porous materials Rain Rain Seepage Seepage Slope stability Slope stability Soils Soils Spheres Spheres Wetting Wetting
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| GB/T 7714 | Hong-Qiang, Dou , Sen-Hua, Xie , Wen-Bin, Jian et al. Characteristics of preferential flow suffosion of soil-rock interface in spherical weathered granite slopes [J]. | Rock and Soil Mechanics , 2024 , 45 (4) : 950-960 . |
| MLA | Hong-Qiang, Dou et al. "Characteristics of preferential flow suffosion of soil-rock interface in spherical weathered granite slopes" . | Rock and Soil Mechanics 45 . 4 (2024) : 950-960 . |
| APA | Hong-Qiang, Dou , Sen-Hua, Xie , Wen-Bin, Jian , Hao, Wang , Chao-Xu, Guo . Characteristics of preferential flow suffosion of soil-rock interface in spherical weathered granite slopes . | Rock and Soil Mechanics , 2024 , 45 (4) , 950-960 . |
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