Stability analysis of artificial dam in coal mine underground water reservoir based on the hydro-mechanical damage model

Ma, Junpeng; Zhang, Guangchao; Zhou, Guanglei; Zhang, Yong; Meng, Xiangjun; Zhao, Yongqiang; Chen, Miao

doi:10.1080/19475705.2023.2190855

Cited by 10 publications

(1 citation statement)

References 28 publications

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“…According to incomplete statistics, 6.88 billion tons of water resource is discharged annually in China. However, the utilization rate of mine water is only 35%, resulting in a large amount of water waste [1][2][3][4][5]. The construction of underground water reservoirs in coal mines can store mine water, which can effectively alleviate the problem of the waste of groundwater resources caused by coal mining [1,[6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Research on the Capacity of Underground Reservoirs in Coal Mines to Protect the Groundwater Resources: A Case of Zhangshuanglou Coal Mine in Xuzhou, China

Zhang

Luo

et al. 2023

Water

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This study analyzes the ability of coal mine underground reservoirs to protect groundwater resources. As the demand for coal mining continues to increase, the potential impact on groundwater resources around mines has become a growing problem. Underground water reservoirs, also known as coal mine underground reservoirs, have been constructed as a solution to protect water wastage in mining operations. However, there is a lack of awareness related to the ability of underground water reservoirs in mines to protect groundwater resources. In this study, we used FLAC3D software to analyze the formation process, water storage volume, and central storage location of the underground water reservoir in Zhangshuanglou Coal Mine. The results show that the damaged volume is 3.39 × 106 m3, and the groundwater resources that can be protected by coal mine underground reservoirs in the study area amount to 1.98 × 105 m3. We found that the storage capacity of underground reservoirs is more significantly affected by the extent of mining, which can be expressed as y = 49,056.44 + 255.75x + 1.46x2 (R2 = 0.995) (x ≠ 0). Additionally, the water storage location obtained through simulation can provide a reference for the construction of underground reservoir regulation and water storage projects. The results of the water quality analysis indicate that the concentrations of SO42− decreased by 42% with the closure of the mining area, and the pH also gradually converged to neutral. This highlights the significant role of underground water reservoirs in coal mines in promoting green production and protecting water resources and the environment.

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Section: Introductionmentioning

confidence: 99%

Research on the Capacity of Underground Reservoirs in Coal Mines to Protect the Groundwater Resources: A Case of Zhangshuanglou Coal Mine in Xuzhou, China

Zhang

Luo

et al. 2023

Water

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Research on pumped storage and complementary energy development models for abandoned mines in China

Yang,

Lyu,

et al. 2024

J. Cent. South Univ.

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Mechanical responses and fracturing behaviors of coal under complex normal and shear stresses, Part I: Experimental results

Song,

Dang,

Bai

et al. 2024

Int J Coal Sci Technol

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This work presents experimental tests based on coal collected from a coal mine based underground water reservoir (CMUWR). The mechanical responses of dry and water-soaked coal samples under the complex normal and shear stresses under multi-amplitude and variable frequency is investigated. The experimental results reveal the effects of stress path, water soaking and frequency on deformation, energy dissipation, secant modulus and shear failure surface roughness. The experimental results show that when normal and shear stresses are applied simultaneously, there is a significant competitive relationship between them. On the dominant side, the strain rate will be significantly increased. The sample under a loading frequency of 0.2 Hz exhibits a longer fatigue life. During the cyclic shear test, the shear strain of the water-soaked sample is higher than that of the dry samples. The average roughness coefficient of failure surface exhibits an increasing pattern with increase in shear strength, the elevated roughness of a shear surface is advantageous in constraining shear displacements of specimens, thereby lowering the energy dissipation. This study can provide theoretical and practical implications for a long-term safety evaluation of CMUWR.

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Stability analysis of artificial dam in coal mine underground water reservoir based on the hydro-mechanical damage model

Cited by 10 publications

References 28 publications

Research on the Capacity of Underground Reservoirs in Coal Mines to Protect the Groundwater Resources: A Case of Zhangshuanglou Coal Mine in Xuzhou, China

Research on the Capacity of Underground Reservoirs in Coal Mines to Protect the Groundwater Resources: A Case of Zhangshuanglou Coal Mine in Xuzhou, China

Research on pumped storage and complementary energy development models for abandoned mines in China

Mechanical responses and fracturing behaviors of coal under complex normal and shear stresses, Part I: Experimental results

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