Shan Dong

Enhancing the Reliability, Performance, and Practical Value of Deep Learning Landslide Mapping via Pixel-Level Uncertainty Analysis

Shan Dong, Hui Li, Cheng Zhong, Junjie Pan

Pixel-level uncertainty assessment is commonly overlooked in current deep learning-based landslide detection, which greatly limits the reliability, performance, and practical value of the results. To fill this gap, this study employs Monte Carlo Dropout to systematically quantify pixel-level uncertainty. Subsequently, it interprets …

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Large-Scale Discrete Element Modelling of in-situ Direct Shear and Plate Load Tests on Granular Soils

Zhichun Lu, Shan Dong, Guodong Liu, Marcos Arroyo et autres

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Effect of high-frequency microseismicity on shear strength of interlayer structural planes of bedding rock landslides

Shan Dong, Xi Hu, Tingting Shi, Q Zhang et autres

Water storage in the Three Gorges Reservoir in China has increased the regional microseismicity. Bedding-rock landslides, one of the most common slope structures in the Three Gorges Reservoir, are highly prone to sliding under seismic loading. Existing research primarily focuses on the …

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Rapid Evaluation of Rock Mass Integrity of Engineering Slopes Using Three-Dimensional Laser Scanning

Liang Chen, Yunfeng Ge, Xuming Zeng, Haiyan Wang et autres

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An Effective Approach for Determining Rock Discontinuity Sets Using a Modified Whale Optimization Algorithm

Xiaoyu Yi, Wenkai Feng, Wenxuan Wu, Y.H. Zhou et autres

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Experimental study on strength and failure characteristics of sandstone rock mass with complex cataclastic structure using 3D printing models

Shan Dong, Zhichun Lu, Xi Hu

A cataclastic rock mass is a poor type of engineering geological rock mass. The determination of the shear failure characteristics and shear strengths of cataclastic rock masses can provide key basis for the design and construction of infrastructure. Physical model samples of …

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A method for calculating permanent displacement of seismic-induced bedding rock landslide considering the deterioration of the structural plane

Yulin Peng, Shan Dong, Zhichun Lu, Heng Zhang et autres

The mechanism of seismic-induced bedding rock landslide is distinct from that of slope instability/landslide in normal gravity conditions; their failure modes are mainly characterized by vibration deterioration effect of rock mass structural plane due to a seismic loading, which has a significant …

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Shear strength deterioration effect of rock mass joint surface under cyclic shear load

Heng Zhang, Shan Dong, Zhichun Lu, Yulin Peng et autres

Understanding the shear strength degradation mechanism of a rock mass joint surface under cyclic shear load and determining a corresponding analytical model is an important foundation for accurately evaluating the safety of rock mass engineering under seismic loads. It is worth noting …

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Shear characteristics and shear strength model of rock mass structural planes

Shan Dong, Yulin Peng, Zhichun Lu, Heng Zhang et autres

Accurately determining the shear strength of structural planes is crucial for evaluating the stability of rock masses. The shear test using the sawtooth structural plane usually captures the main influencing factors of its shear characteristics. In this study, the two-dimensional particle flow …

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Method of calculating shear strength of rock mass joint surface considering cyclic shear degradation

Shan Dong, Heng Zhang, Yulin Peng, Zhichun Lu et autres

Abstract When a rock mass shears along a joint surface, the shear resistance is affected by joint surface undulations and friction between the contact regions. During an earthquake, the seismic load causes dynamic deterioration of the joint surface mechanical properties, mostly reflected …

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A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes

Wenkai Feng, Zhichun Lu, Xiaoyu Yi, Shan Dong

The earthquake-induced permanent displacement is an important index of the potential damage to a slope during an earthquake. The Newmark method assumes that a slope is a rigid-plastic body, and the seismic responses of sliding masses or seismic forces along the slide …

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Method for calculating the shear strength of rock masses with different combined structural planes based on the 3D printing technology

Wenkai Feng, Yibo Yin, Shan Dong, Hongchuan Dai et autres

Abstract The mechanical behavior of rock masses with different combined structural planes is poorly understood because of the difficulties associated with the performance of rock observations and analyses from the surface, collection of samples during field investigations, specimen preparation, and laboratory tests. …

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