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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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Background Extreme wildfires pose a serious threat to forest vegetation and human life because they spread more rapidly and are more intense than conventional wildfires. Detecting extreme wildfires is challenging due to their visual similarities to traditional fires, and existing models primarily detect the presence or absence of fires without focusing on distinguishing extreme wildfires and providing warnings.Aims To test a system for real time detection of four extreme wildfires.Methods We proposed a novel lightweight model, called LEF-YOLO, based on the YOLOv5 framework. To make the model lightweight, we introduce the bottleneck structure of MobileNetv3 and use depthwise separable convolution instead of conventional convolution. To improve the model's detection accuracy, we apply a multiscale feature fusion strategy and use a Coordinate Attention and Spatial Pyramid Pooling-Fast block to enhance feature extraction.Key results The LEF-YOLO model outperformed the comparison model on the extreme wildfire dataset we constructed, with our model having excellent performance of 2.7 GFLOPs, 61 FPS and 87.9% mAP.Conclusions The detection speed and accuracy of LEF-YOLO can be utilised for the real-time detection of four extreme wildfires in forest fire scenes.Implications The system can facilitate fire control decision-making and foster the intersection between fire science and computer science. We tested a lightweight architecture called LEF-YOLO for detecting four extreme wildfires. We found improved detection accuracy through multi-scale fusion and attention mechanism, and constructed four extreme wildfire datasets and compared these with multiple object detection models and lightweight feature extraction networks. This method is beneficial for the development of extreme wildfire field robots.
Keyword ：
convolutional neural networks convolutional neural networks deep learning deep learning extreme wildfire extreme wildfire fire safety fire safety lightweight lightweight multiscale feature fusion multiscale feature fusion object detection object detection YOLO (LEF-YOLO) YOLO (LEF-YOLO)
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| GB/T 7714 | Li, Jianwei , Tang, Huan , Li, Xingdong et al. LEF-YOLO: a lightweight method for intelligent detection of four extreme wildfires based on the YOLO framework [J]. | INTERNATIONAL JOURNAL OF WILDLAND FIRE , 2024 , 33 (1) . |
| MLA | Li, Jianwei et al. "LEF-YOLO: a lightweight method for intelligent detection of four extreme wildfires based on the YOLO framework" . | INTERNATIONAL JOURNAL OF WILDLAND FIRE 33 . 1 (2024) . |
| APA | Li, Jianwei , Tang, Huan , Li, Xingdong , Dou, Hongqiang , Li, Ru . LEF-YOLO: a lightweight method for intelligent detection of four extreme wildfires based on the YOLO framework . | INTERNATIONAL JOURNAL OF WILDLAND FIRE , 2024 , 33 (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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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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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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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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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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以高寒高海拔区某大型光伏电站中平单轴光伏支架系统为背景,依托ABAQUS有限元模拟软件,构建大跨度平单轴光伏支架-基础-面板一体化三维有限元模型,探讨极端环境下平单轴光伏跟踪系统关键构件的受荷特性与失稳变形机制,并藉此提供针对性的优化设计建议.结果表明,受极端风荷载作用,该大跨度平单轴光伏系统在最大跟踪角度下,其檩条最大应力达544.4 MPa,立柱最大位移达76.3 mm,致使局部檩条、H型钢桩存在潜在屈服破坏风险;上部结构各构件的变形与其所处位置有关,整体表现为沿主梁长轴方向呈波浪线型分布,两立柱的跨中位置同样多发生较大位移,且在光伏组件悬臂端部最为明显,其在风荷载作用下的最大变形甚至达153.2 mm.针对大跨度平单轴跟踪光伏系统中的薄弱部位,提出可增强局部构件的强度或改变局部结构特征等优化建议以增强其整体稳定性.
Keyword ：
光伏系统 光伏系统 力学特性 力学特性 平单轴 平单轴 数值模拟 数值模拟 极端荷载 极端荷载 跟踪 跟踪
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| GB/T 7714 | 王龙威 , 李如 , 豆红强 et al. 平单轴光伏跟踪支架-基础受荷特性与优化设计 [J]. | 太阳能学报 , 2024 , 45 (10) : 345-353 . |
| MLA | 王龙威 et al. "平单轴光伏跟踪支架-基础受荷特性与优化设计" . | 太阳能学报 45 . 10 (2024) : 345-353 . |
| APA | 王龙威 , 李如 , 豆红强 , 谢森华 . 平单轴光伏跟踪支架-基础受荷特性与优化设计 . | 太阳能学报 , 2024 , 45 (10) , 345-353 . |
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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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