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滑坡对降雨入渗的响应研究
期刊论文 | 2025 , 39 (1) , 86-92 | 土工基础
Abstract&Keyword Cite Version(1)

Abstract :

福建省降雨型滑坡频发,揭示由降雨引发的滑坡失稳演化及其规律对研究福建省地质灾害形成机理及风险预警判据具有重要意义.以福建省福州市永泰县后亭滑坡为研究对象,建立数值模型并辅以现场监测数据,研究降雨作用下滑坡渗流场变化及其稳定性响应.研究表明:①强降雨下滑坡形成局部高负孔压区,并使水流向该区域汇集,土体含水率响应与降雨呈正相关,响应及时;②强降雨下滑坡稳定性系数迅速降低,雨后恢复,但恢复速率远小于下降速率,且无法恢复到初始值;③干湿循环后土体强度下降,由此引起同条件下的滑坡稳定性下降,故在多个降雨周期后,其稳定性可能下降致使产生滑坡;④强降雨下,地表位移稳步增长,并在雨后由于水分下渗,仍存在一定增长.

Keyword :

干湿循环 干湿循环 数值模拟 数值模拟 滑坡稳定性 滑坡稳定性 降雨 降雨

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GB/T 7714 章德生 , 简文彬 , 夏昌 . 滑坡对降雨入渗的响应研究 [J]. | 土工基础 , 2025 , 39 (1) : 86-92 .
MLA 章德生 等. "滑坡对降雨入渗的响应研究" . | 土工基础 39 . 1 (2025) : 86-92 .
APA 章德生 , 简文彬 , 夏昌 . 滑坡对降雨入渗的响应研究 . | 土工基础 , 2025 , 39 (1) , 86-92 .
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滑坡对降雨入渗的响应研究
期刊论文 | 2025 , 39 (01) , 86-92 | 土工基础
Enhancing Landslide Detection: A Novel LA-YOLO Model for Rainfall-Induced Shallow Landslides SCIE
期刊论文 | 2025 , 22 | IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
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Abstract :

As a geological disaster widely distributed in the southern regions of China, rainfall-induced shallow landslides pose a significant threat to affected areas. Timely detection of landslides is crucial in the effective response to such disasters. However, landslide detection faces adverse impacts from various factors, such as insufficient sample data, complex model structures, and limitations in detection accuracy during the actual detection process. In this study, high-quality image samples were collected from multiple landslide disaster areas in southern China, and a rainfall-induced shallow landslide sample database was constructed in the region. Based on this, a lightweight attention-guided YOLO model (LA-YOLO) was proposed to improve the detection performance of YOLO model for rainfall-induced shallow landslides. First, CG block is introduced to enhance the C2f module, enriching the feature representation capability through multiscale feature fusion and reducing the model's parameters and computational complexity. Second, the SimAM attention module is used to focus on the target regions, improving feature extraction effectiveness. Experimental results show that the model parameters of LA-YOLO were reduced by approximately 30%, with precision, recall, and mean average precision (mAP) on the landslide sample dataset increasing by 2.6%, 0.7%, and 2.2%, respectively. While ensuring model detection performance, the model structure was significantly optimized, achieving both lightweight and accuracy goals, confirming the model's superiority in monitoring rainfall-induced shallow landslide disasters.

Keyword :

Accuracy Accuracy Attention mechanism Attention mechanism Biological system modeling Biological system modeling context guidance module context guidance module Data models Data models Disasters Disasters Feature extraction Feature extraction landslide detection landslide detection Neurons Neurons Rain Rain rainfall-induced shallow landslide rainfall-induced shallow landslide Terrain factors Terrain factors Training Training YOLO YOLO YOLO v8 YOLO v8

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GB/T 7714 Wang, Lin , Lei, Henggang , Jian, Wenbin et al. Enhancing Landslide Detection: A Novel LA-YOLO Model for Rainfall-Induced Shallow Landslides [J]. | IEEE GEOSCIENCE AND REMOTE SENSING LETTERS , 2025 , 22 .
MLA Wang, Lin et al. "Enhancing Landslide Detection: A Novel LA-YOLO Model for Rainfall-Induced Shallow Landslides" . | IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 22 (2025) .
APA Wang, Lin , Lei, Henggang , Jian, Wenbin , Wang, Wenjia , Wang, Hao , Wei, Nan . Enhancing Landslide Detection: A Novel LA-YOLO Model for Rainfall-Induced Shallow Landslides . | IEEE GEOSCIENCE AND REMOTE SENSING LETTERS , 2025 , 22 .
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Enhancing Landslide Detection: A Novel LA-YOLO Model for Rainfall-Induced Shallow Landslides Scopus
期刊论文 | 2025 , 22 | IEEE Geoscience and Remote Sensing Letters
Enhancing Landslide Detection: A Novel LA-YOLO Model for Rainfall-Induced Shallow Landslides Scopus
期刊论文 | 2025 | IEEE Geoscience and Remote Sensing Letters
Enhancing Landslide Detection: A Novel LA-YOLO Model for Rainfall-Induced Shallow Landslides EI
期刊论文 | 2025 , 22 | IEEE Geoscience and Remote Sensing Letters
干湿循环下煤矸石土石混合体大型直剪试验研究
期刊论文 | 2025 , 44 (2) , 331-341 | 岩石力学与工程学报
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Abstract :

煤炭开挖和选煤过程中产生大量煤矸石,堆积于地表的煤矸石易受到环境的影响引发灾害.目前,干湿循环条件下煤矸石土石混合体的强度特性研究较少.通过大型直剪试验,探究干湿循环和含石量对煤矸石土石混合体强度特性的作用机制;揭示含石量(RP)和干湿循环次数对土石混合体积变化及相对破碎率(rB)的影响规律;建立干湿循环下土石混合体抗剪强度劣化方程.试验结果表明,随着含石量的提高,煤矸石土石混合体的内摩擦角呈现线性增加,而黏聚力则呈现出下降趋势;煤矸石土石混合体在剪切过程中呈现明显的剪切收缩现象;煤矸石土石混合体的剪切强度和法向应变最大值随着含石量的增加而增加,并随着干湿循环次数的增加而减小.首次干湿循环对土石混合体的抗剪强度劣化作用显著,3 次干湿循环后土石混合体抗剪强度变化不明显;干湿循环加剧了土石混合体中岩块的破碎趋势,提高岩块的 rB,导致土壤颗粒含量(粒径<5 mm)增加.高法向应力下(nσ=800 kPa),rB 随干湿循环次数增加而提高,而低法向应力下(nσ=200 kPa)干湿循环对岩块破碎影响有限.

Keyword :

剪切强度 剪切强度 土石混合体 土石混合体 岩石力学 岩石力学 干湿循环 干湿循环 煤矸石 煤矸石 相对破碎率 相对破碎率

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GB/T 7714 刘红位 , 游诗琪 , 简文彬 et al. 干湿循环下煤矸石土石混合体大型直剪试验研究 [J]. | 岩石力学与工程学报 , 2025 , 44 (2) : 331-341 .
MLA 刘红位 et al. "干湿循环下煤矸石土石混合体大型直剪试验研究" . | 岩石力学与工程学报 44 . 2 (2025) : 331-341 .
APA 刘红位 , 游诗琪 , 简文彬 , 黄云 , 冯嵩 , 邓涛 . 干湿循环下煤矸石土石混合体大型直剪试验研究 . | 岩石力学与工程学报 , 2025 , 44 (2) , 331-341 .
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干湿循环下煤矸石土石混合体大型直剪试验研究
期刊论文 | 2025 , 44 (02) , 331-341 | 岩石力学与工程学报
Degradation of the mechanical properties of root-soil composites under moisture influence SCIE
期刊论文 | 2025 , 84 (3) | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
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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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Degradation of the mechanical properties of root–soil composites under moisture influence Scopus
期刊论文 | 2025 , 84 (3) | Bulletin of Engineering Geology and the Environment
Degradation of the mechanical properties of root–soil composites under moisture influence EI
期刊论文 | 2025 , 84 (3) | Bulletin of Engineering Geology and the Environment
Research on influential factors of crack propagation depth of unsaturated residual soils under short-term variations in external air pressure SCIE
期刊论文 | 2025 , 16 (1) | GEOMATICS NATURAL HAZARDS & RISK
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Abstract :

The presence of cracks significantly influences the engineering properties of unsaturated residual soil, particularly under external air pressure fluctuation (i.e. Delta u(a)). A formula is developed that integrates existing crack depth theories with factors such as soil shear strengths, effective stress parameters, effective tensile strength reduction coefficients, and environmental changes like infiltration and evaporation. In addition, a further equation is deduced to determine the surface flow rate cracking value Q(0), which can reflect the influence of seasonal climate on the matric suction of the surface soil. Our findings reveal that crack depth is quite reactive to short-term fluctuations in external air pressure, effective stress parameters and evaporation intensity, with remarkable increases in crack depth linked to these variations. The theoretical depth of soil crack increases by 0.12 similar to 0.27m when the external air pressure fluctuation (i.e. Delta u(a)) is 3 kPa. Soils subjected to climatic conditions crack only when Q>Q(0), and early cracking of soils under Delta u(a)>0 is conditioned by increasing infiltration and effective cohesion or reducing evaporation. The variation rule of the theoretical crack depth calculated in this research shows consistency with the previous equations, and the model predictions at Delta u(a) = 3kPa are proved to match well with the measured results of the practical engineering subjected to various climate environment factors.

Keyword :

crack propagation depth crack propagation depth short-term variations in external air pressure short-term variations in external air pressure strength parameters strength parameters surface flow ratio surface flow ratio Unsaturated residual soil Unsaturated residual soil

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GB/T 7714 Xu, Xu-tang , Jian, Wen-bin , Cai, Ye-qing et al. Research on influential factors of crack propagation depth of unsaturated residual soils under short-term variations in external air pressure [J]. | GEOMATICS NATURAL HAZARDS & RISK , 2025 , 16 (1) .
MLA Xu, Xu-tang et al. "Research on influential factors of crack propagation depth of unsaturated residual soils under short-term variations in external air pressure" . | GEOMATICS NATURAL HAZARDS & RISK 16 . 1 (2025) .
APA Xu, Xu-tang , Jian, Wen-bin , Cai, Ye-qing , Chen, Xiang-long . Research on influential factors of crack propagation depth of unsaturated residual soils under short-term variations in external air pressure . | GEOMATICS NATURAL HAZARDS & RISK , 2025 , 16 (1) .
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Research on influential factors of crack propagation depth of unsaturated residual soils under short-term variations in external air pressure EI
期刊论文 | 2025 , 16 (1) | Geomatics, Natural Hazards and Risk
Research on influential factors of crack propagation depth of unsaturated residual soils under short-term variations in external air pressure Scopus
期刊论文 | 2025 , 16 (1) | Geomatics, Natural Hazards and Risk
Global Sensitivity Analysis of Slope Stability Considering Effective Rainfall with Analytical Solutions SCIE
期刊论文 | 2025 , 17 (2) | WATER
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Abstract :

Rainfall-induced landslides are widely distributed in many countries. Rainfall impacts the hydraulic dynamics of groundwater and, therefore, slope stability. We derive an analytical solution of slope stability considering effective rainfall based on the Richards equation. We define effective rainfall as the total volume of rainfall stored within a given range of the unsaturated zone during rainfall events. The slope stability at the depth of interest is provided as a function of effective rainfall. The validity of analytical solutions of system states related to effective rainfall, for infinite slopes of a granite residual soil, is verified by comparing them with the corresponding numerical solutions. Additionally, three approaches to global sensitivity analysis are used to compute the sensitivity of the slope stability to a variety of factors of interest. These factors are the reciprocal of the air-entry value of the soil alpha, the thickness of the unsaturated zone L, the cohesion of soil c, the internal friction angle phi related to the effective normal stress, the slope angle beta, the unit weights of soil particles gamma(s), and the saturated hydraulic conductivity K-s. The results show the following: (1) The analytical solutions are accurate in terms of the relative differences between the analytical and the numerical solutions, which are within 5.00% when considering the latter as references. (2) The temporal evolutions of the shear strength of soil can be sequentially characterized as four periods: (i) strength improvement due to the increasing weight of soil caused by rainfall infiltration, (ii) strength reduction controlled by the increasing pore water pressure, (iii) strength reduction due to the effect of hydrostatic pressure in the transient saturation zone, and (iv) stable strength when all the soil is saturated. (3) The large alpha corresponds to high effective rainfall. (4) The factors ranked in descending order of sensitivity are as follows: alpha > L > c > beta > gamma(s) > K-s > phi.

Keyword :

analytic solution analytic solution effective rainfall effective rainfall global sensitivity analysis global sensitivity analysis shear strength shear strength slope stability slope stability

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GB/T 7714 Xia, Chuan-An , Zhang, Jing-Quan , Wang, Hao et al. Global Sensitivity Analysis of Slope Stability Considering Effective Rainfall with Analytical Solutions [J]. | WATER , 2025 , 17 (2) .
MLA Xia, Chuan-An et al. "Global Sensitivity Analysis of Slope Stability Considering Effective Rainfall with Analytical Solutions" . | WATER 17 . 2 (2025) .
APA Xia, Chuan-An , Zhang, Jing-Quan , Wang, Hao , Jian, Wen-Bin . Global Sensitivity Analysis of Slope Stability Considering Effective Rainfall with Analytical Solutions . | WATER , 2025 , 17 (2) .
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Global Sensitivity Analysis of Slope Stability Considering Effective Rainfall with Analytical Solutions Scopus
期刊论文 | 2025 , 17 (2) | Water (Switzerland)
Global Sensitivity Analysis of Slope Stability Considering Effective Rainfall with Analytical Solutions EI
期刊论文 | 2025 , 17 (2) | Water (Switzerland)
Reduced-order Monte Carlo simulation framework for groundwater flow in randomly heterogeneous composite transmissivity fields SCIE
期刊论文 | 2025 , 651 | JOURNAL OF HYDROLOGY
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Abstract :

We develop a reduced-order modeling strategy aimed at providing numerical Monte Carlo simulations of groundwater flow in randomly heterogeneous transmissivity fields. We rely on moment equations for groundwater flow and conduct space reductions for both transmissivity, T , and hydraulic head, h . A truncated singular value decomposition (SVD) solver is employed to cope with the ill-conditioned stiffness matrix caused by (negative and thus) unphysical values of T that might arise due to possible low accuracy stemming from the order of model reduction. The performance of the approach is assessed through the analysis of various synthetic reference scenarios. These encompass diverse degrees of heterogeneity of the transmissivity field and various values of reduced-order dimensions, n and m , associated with h and T , respectively. Transmissivity is conceptualized as a composite (spatial) random field where there is uncertainty in the locations of regions associated with diverse geomaterials as well as in the heterogeneity of transmissivity therein. Our results are also compared against their counterparts that one could obtain upon performing a model reduction solely on the basis of hydraulic heads. Our findings show that: (i) resting on the truncated SVD solver is beneficial for coping with ill- conditioned stiffness matrices; (ii) the two model reduction strategies provide comparable solution accuracy for m >= 5n, while (iii) the computational cost associated with the reduced-order model based on space reduction for both T and h is always significantly smaller than that associated with space reduction based solely on h .

Keyword :

Groundwater Groundwater Moment equations Moment equations Monte Carlo simulation Monte Carlo simulation Reduced-order model Reduced-order model Truncated singular value decomposition Truncated singular value decomposition

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GB/T 7714 Xia, Chuan-An , Wang, Hao , Jian, Wenbin et al. Reduced-order Monte Carlo simulation framework for groundwater flow in randomly heterogeneous composite transmissivity fields [J]. | JOURNAL OF HYDROLOGY , 2025 , 651 .
MLA Xia, Chuan-An et al. "Reduced-order Monte Carlo simulation framework for groundwater flow in randomly heterogeneous composite transmissivity fields" . | JOURNAL OF HYDROLOGY 651 (2025) .
APA Xia, Chuan-An , Wang, Hao , Jian, Wenbin , Riva, Monica , Guadagnini, Alberto . Reduced-order Monte Carlo simulation framework for groundwater flow in randomly heterogeneous composite transmissivity fields . | JOURNAL OF HYDROLOGY , 2025 , 651 .
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Reduced-order Monte Carlo simulation framework for groundwater flow in randomly heterogeneous composite transmissivity fields Scopus
期刊论文 | 2025 , 651 | Journal of Hydrology
Reduced-order Monte Carlo simulation framework for groundwater flow in randomly heterogeneous composite transmissivity fields EI
期刊论文 | 2025 , 651 | Journal of Hydrology
花岗岩残积土的微细观结构研究
期刊论文 | 2025 , 36 (2) , 136-144 | 中国地质灾害与防治学报
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Abstract :

花岗岩残积土在东南丘陵山区广泛分布,在降雨等因素作用下残积土边坡易失稳产生滑坡.花岗岩残积土按照不同粒径的颗粒含量可划分为花岗岩残积黏性土、花岗岩残积砂质黏性土和花岗岩残积砾质黏性土,因其具有较强的结构性,其微观结构的变化往往表征在宏观坡体稳定性方面.通过X射线衍射分析、SEM扫描电镜分析等手段,从微观结构层面揭示了花岗岩残积土的物质与结构性特征.结果表明,花岗岩残积黏性土的胶结能力及力学强度高于花岗岩残积砂质黏性土,土体的微观结构性质发展一定程度上决定了宏观力学性质的变化.研究结果对进一步揭示花岗岩残积土微观结构特征、变形机制及其对力学性质的影响具有理论及实际意义.

Keyword :

X射线衍射 X射线衍射 微观结构 微观结构 扫描电镜 扫描电镜 花岗岩残积土 花岗岩残积土

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GB/T 7714 庄静茹 , 林威 , 简文彬 et al. 花岗岩残积土的微细观结构研究 [J]. | 中国地质灾害与防治学报 , 2025 , 36 (2) : 136-144 .
MLA 庄静茹 et al. "花岗岩残积土的微细观结构研究" . | 中国地质灾害与防治学报 36 . 2 (2025) : 136-144 .
APA 庄静茹 , 林威 , 简文彬 , 夏昌 , 黄志辉 . 花岗岩残积土的微细观结构研究 . | 中国地质灾害与防治学报 , 2025 , 36 (2) , 136-144 .
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花岗岩残积土的微细观结构研究
期刊论文 | 2025 , 36 (02) , 136-144 | 中国地质灾害与防治学报
空间多尺度下安溪县滑坡易发性评价
期刊论文 | 2025 , 53 (2) , 234-243 | 福州大学学报(自然科学版)
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Abstract :

选取福建省安溪县作为研究区域,在滑坡易发性评价中引入空间多尺度的概念,分别采用逻辑回归模型、信息量模型以及熵权法进行评价.结果表明,逻辑回归模型和信息量模型对大尺度滑坡易发性评价适用度均较高,前者预测能力略优于后者,其中,信息量模型在局部尺度的易发性区划结果优于区域尺度易发性区划结果,也表明基于数据驱动的信息量模型选取样本参数优化效果较优;而对单体尺度滑坡采用熵权法易发性评价能达到较好效果.经模型及实际滑坡点检验,评价结果合理.研究结果可为闽东南地区及同类型滑坡易发性评价提供参考.

Keyword :

信息量模型 信息量模型 安溪县 安溪县 滑坡易发性评价 滑坡易发性评价 熵权法 熵权法 空间多尺度 空间多尺度 逻辑回归模型 逻辑回归模型

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GB/T 7714 张惠琪 , 蓝燕金 , 简文彬 . 空间多尺度下安溪县滑坡易发性评价 [J]. | 福州大学学报(自然科学版) , 2025 , 53 (2) : 234-243 .
MLA 张惠琪 et al. "空间多尺度下安溪县滑坡易发性评价" . | 福州大学学报(自然科学版) 53 . 2 (2025) : 234-243 .
APA 张惠琪 , 蓝燕金 , 简文彬 . 空间多尺度下安溪县滑坡易发性评价 . | 福州大学学报(自然科学版) , 2025 , 53 (2) , 234-243 .
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空间多尺度下安溪县滑坡易发性评价
期刊论文 | 2025 , 53 (02) , 234-243 | 福州大学学报(自然科学版)
新型多支盘土锚的承载性能研究
期刊论文 | 2025 , 33 (2) , 772-782 | 工程地质学报
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Abstract :

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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新型多支盘土锚的承载性能研究
期刊论文 | 2025 , 33 (02) , 772-782 | 工程地质学报
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