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学者姓名：豆红强
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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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In photovoltaic systems, the installation tilt angle of modules plays a critical role in determining both performance and economic returns. Existing methods for calculating the optimal tilt angle typically rely on complex solar radiation and anisotropic sky scattering models, which, despite their accuracy, involve intensive computational efforts. Based on the relationships between the proportion of direct radiation, latitude, and the optimal monthly tilt angle, this study proposed a method to calculate the monthly optimal tilt angle. Taking Zhangye City as an example, the accuracy and reliability of the proposed method were verified in comparison with the traditional method. Using this method, the monthly optimal tilt angles were calculated for three cities in China located at different latitudes, to reveal the annual variation patterns of these angles. The results showed that, at the same proportion of direct radiation, the monthly optimal tilt angle increases with latitude. Over the course of a year, the monthly optimal tilt angle first decreases and then increases. In low latitude cites, the monthly optimal tilt angle may even become negative.
Keyword ：
calculation model calculation model fixed photovoltaic panel fixed photovoltaic panel monthly optimal tilt angle monthly optimal tilt angle proportion of direct radiation proportion of direct radiation
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| GB/T 7714 | Zhang, Xiang-Xiang , Chen, Jia-Long , Dou, Hong-Qiang et al. CALCULATION MODEL FOR THE MONTHLY OPTIMAL TILT ANGLE OF FIXED PHOTOVOLTAIC PANELS [J]. | THERMAL SCIENCE , 2025 , 29 (2B) : 1403-1409 . |
| MLA | Zhang, Xiang-Xiang et al. "CALCULATION MODEL FOR THE MONTHLY OPTIMAL TILT ANGLE OF FIXED PHOTOVOLTAIC PANELS" . | THERMAL SCIENCE 29 . 2B (2025) : 1403-1409 . |
| APA | Zhang, Xiang-Xiang , Chen, Jia-Long , Dou, Hong-Qiang , Liu, Cheng-Yu , Hou, Xian-Ye . CALCULATION MODEL FOR THE MONTHLY OPTIMAL TILT ANGLE OF FIXED PHOTOVOLTAIC PANELS . | THERMAL SCIENCE , 2025 , 29 (2B) , 1403-1409 . |
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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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The Yaoshan landslide, situated in the hilly and mountainous terrain of southeastern China, exhibits typical episodic sliding behavior driven by a complex subsurface hydrogeological system. This study integrates longterm in-situ monitoring data with microtremor survey techniques to investigate the internal mechanisms underlying its intermittent movement. A two-dimensional apparent S-wave velocity (Vs) structure was constructed for the key sliding area, revealing both lateral and vertical discontinuities associated with lithological boundaries and potential slip surfaces. By correlating low-velocity anomalies with borehole lithology and observed deep-seated deformation features, the depth and geometry of the principal slip surface were identified. Several geophysical cross-sections revealed bowl-shaped depressions within the landslide mass, where interconnected low-velocity zones likely function as preferential hydrological pathways. Monitoring data indicate that these depressions are prone to rapid pore water pressure buildup during intense rainfall, which can trigger reactivation of sliding. Field surveys further verified the hydraulic connectivity between low-velocity zones and surface gullies, suggesting strong coupling between surface runoff and internal groundwater flow. The perennial flow in gullies, combined with long-term seepage through colluvial deposits, may accelerate internal erosion within the slip zone. These findings offer new insights into the hydro-mechanical coupling mechanisms of landslides and provide a scientific foundation for risk assessment and the design of mitigation measures in geologically similar settings.
Keyword ：
In-situ monitoring In-situ monitoring Intermittent motion Intermittent motion Internal structures Internal structures Microtremor survey Microtremor survey Preferential flow pathways Preferential flow pathways
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| GB/T 7714 | Yang, Jian , Zhang, Huiqi , Jian, Wenbin et al. Investigation of intermittent motion mechanisms in large landslides based on in-situ monitoring and microtremor survey [J]. | ENGINEERING GEOLOGY , 2025 , 354 . |
| MLA | Yang, Jian et al. "Investigation of intermittent motion mechanisms in large landslides based on in-situ monitoring and microtremor survey" . | ENGINEERING GEOLOGY 354 (2025) . |
| APA | Yang, Jian , Zhang, Huiqi , Jian, Wenbin , Lin, Lipeng , Robledo, Luis F. , Wang, Hao et al. Investigation of intermittent motion mechanisms in large landslides based on in-situ monitoring and microtremor survey . | ENGINEERING GEOLOGY , 2025 , 354 . |
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Weathered soil, as the primary source material in granite-like binary-structure slopes, plays a critical role in slope stability. Understanding its internal erosion characteristics is essential for elucidating the failure modes and sliding mechanisms of granite slopes. Under groundwater seepage, internal erosion in weathered granite soil involves processes such as fine particle migration and clogging. In this study, model tests and numerical simulations were conducted to investigate particle migration by examining particle velocity, displacement, loss, and changes in porosity within the seepage zone. The results reveal the evolutionary process of internal erosion in weathered granite soil and the multi-scale transport behaviour of fine particles. Under seepage, fine particles migrated through pore spaces between the particle skeletons. When obstructed by the skeletal framework or bedrock surface, particle movement slowed, leading to siltation and clogging. During seepage, the rate of particle loss decreased progressively over time. The greatest loss occurred within the first hour, with over 90% of the migrating particles consisting of clay and fine sand (0.25 mm <= d). Particle displacement originated in structurally weaker regions of the soil, and the erosion extent expanded as seepage continued. The migration of soil particles altered the internal structure, affecting both porosity and permeability. This study provides new insights into the mechanisms of internal erosion in weathered granite soil, providing a theoretical basis for predicting slope instability and mitigating geohazards.
Keyword ：
Dynamic water head Dynamic water head Internal erosion Internal erosion Particle migration Particle migration Weathered granite soil Weathered granite soil
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| GB/T 7714 | Wang, Hao , Yan, Geng-ming , Dou, Hong-qiang et al. Experimental-Numerical Analysis of Particle Migration and Internal Erosion in Weathered Granite Soils [J]. | GEOTECHNICAL AND GEOLOGICAL ENGINEERING , 2025 , 43 (8) . |
| MLA | Wang, Hao et al. "Experimental-Numerical Analysis of Particle Migration and Internal Erosion in Weathered Granite Soils" . | GEOTECHNICAL AND GEOLOGICAL ENGINEERING 43 . 8 (2025) . |
| APA | Wang, Hao , Yan, Geng-ming , Dou, Hong-qiang , Xia, Chuan-an , Yan, Hua-xiang . Experimental-Numerical Analysis of Particle Migration and Internal Erosion in Weathered Granite Soils . | GEOTECHNICAL AND GEOLOGICAL ENGINEERING , 2025 , 43 (8) . |
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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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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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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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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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