Erosion Failure of Slope in a Dump with Ground Fissure under Heavy Rain

Li, Yexin; Lv, Gang; Wang, Daohan; Su, Wenxuan; Zhongping, Wei

doi:10.3390/w14213425

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…The overlying layer of dense clay affected the results of the radon and soil radon flux density measurements because it formed a sufficiently dense screen for gases from the landfill atmosphere. Weakened fault zones within the massif may no longer develop as fault zones, but they can still enhance water erosion, leading to the creation of deep ravines [50]. We did not observe any visual faults in this layer, indicating the stability of the dump massif after the application of this clay layer.…”

Section: Discussionmentioning

confidence: 63%

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

Leshukov,

Larionov,

Nastavko

et al. 2023

Earth

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Overburden rock massifs resulting from open-pit coal mining are very common objects in the world’s mining regions. These locations pose a significant challenge as the global mining industry expands. These dumps are capable of self-burning for quite a long time. The displacement and sliding of these massifs can cause catastrophic consequences. In addition, these objects emit a significant amount of greenhouse gases into the atmosphere. Therefore, it is necessary to manage such objects and implement appropriate measures to limit their impact on the environment. In this work, we studied soil radon volume activity (VAR) and radon flux density (RFD) on the surface of the overburden rock massif of coal-bearing mining rocks and also made visual fixation of disturbances in the body of the massif, which appeared in the process of its movement. We found anomalies of VAR and RFD on the surface of the overburden extending from north to south. These anomalies were extended along the strike of the faults found in the body of the massif. Additionally, the radon anomalies coincided with the anomalies of methane gas emission previously measured for this object. Thus, we determined that the exit of gases from the body of the massif is carried out through fault (weakened) zones in the body of the massif. According to the results of the study, we propose to carry out radon monitoring in order to detect the spontaneous ignition process of the massif or the increase of its mobility. This will also allow us to take appropriate measures to stabilize the massif or to extinguish the dump before or simultaneously with the biological stage of reclamation.

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Section: Discussionmentioning

confidence: 63%

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

Leshukov,

Larionov,

Nastavko

et al. 2023

Earth

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Crack mechanism of ground fissures in loess layer of Fenwei Basin, China

Li,

Lu,

Wang

et al. 2024

J. Mt. Sci.

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50 years of mining-induced environmental changes: topography, hydrology, and vegetation health in Kazreti, Georgia

Avkopashvili,

Avkopashvili

et al. 2024

Environ. Res. Commun.

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Globally, prioritizing short-term economic gains from mineral extraction has led to a critical dilemma: a planet rich in resources struggles with environmental degradation and a diminishing ability to sustain future generations. Open-pit mining exemplifies this paradox, causing significant environmental damage. In Georgia, this extractive industry presents environmental problems. Despite these known consequences, the long-term impacts of mining activities remain understudied. This study addressed this gap by analyzing the effects of open-pit mining on terrain morphology, and water dynamics in the Kazreti region over a 50-year period (1970-2020) and vegetation health over 35-year period (1987-2022). By integrating water quality assessment, spatial analysis and remote sensing, we revealed the significant human-induced changes to the region's ecosystem. Spatial analysis results suggested that over 156.7 million cubic meters of bedrock have been fragmented by mining in southern East Georgia, with 125.5 million cubic meters deposited in valleys. Consequently, discernible shifts in the trajectories of water flow were observed based on the hydrological model. Additionally, a comparative analysis of NDVI and EVI values revealed a decline in vegetation health near mining zones, while remote forest areas remained stable. June typically showed healthier vegetation due to cooler temperatures and optimal growing conditions, while August presented lower vegetation health due to increased heat stress. Water quality revealed significant loadings of Cu (range: 58 – 1855μg/L), Zn (range: 54 – 2582μg/L,), Mn (range: 1 – 2167μg/L), and Cd (range: 0.1 – 4.5μg/L), in local river systems, which are higher than the Georgian official guideline values (Cu - 1000, Zn - 1000, Mn – 100, Cd – 1μg/L). This study highlighted the need for a broader long-term monitoring strategy to assess the migration of these contaminants within the food web and the consequent socio-economic impact.

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Erosion Failure of Slope in a Dump with Ground Fissure under Heavy Rain

Cited by 3 publications

References 29 publications

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

Crack mechanism of ground fissures in loess layer of Fenwei Basin, China

50 years of mining-induced environmental changes: topography, hydrology, and vegetation health in Kazreti, Georgia

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