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Study on Stability and Ecological Restoration of Soil-Covered Rocky Slope of an Abandoned Mine on an Island in Rainy Regions

Author

Listed:
  • Xiaoyan Li

    (Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China)

  • Zipeng Qin

    (Key Laboratory for Technology in Rural Water Management of Zhejiang Province, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China)

  • Yan Tian

    (College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China)

  • Hongwei Zhang

    (Zhejiang Design Institute of Water Conservancy and Hydro-Electric Power Co., Ltd., Hangzhou 310002, China)

  • Haitao Zhao

    (Key Laboratory for Technology in Rural Water Management of Zhejiang Province, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China)

  • Jiafa Shen

    (Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China)

  • Weilong Shao

    (Shaoxing Keqiao District Water Conservancy Development Center, Shaoxing 312030, China)

  • Guangrong Jiang

    (Cangnan County Water Conservancy Bureau of Wenzhou City, Wenzhou 325800, China)

  • Xianding Guo

    (Cangnan County Water Conservancy Bureau of Wenzhou City, Wenzhou 325800, China)

  • Junsuo Zhang

    (Cangnan County Water Conservancy Bureau of Wenzhou City, Wenzhou 325800, China)

Abstract

The eastern slope of the abandoned mine in the Zhoujiayuan Mountain Island area has been seriously damaged by local quarrying, which often triggers visual pollution, soil erosion, and landslides during rainfall. This paper carries out an ecological restoration of the abandoned mine based on indoor experiments and field investigation data. The paper also quantitatively analyzes the stability evolution laws of the soil-covered slope before and after the ecological restoration in the rainfall process, putting forward further slope reinforcement and ecological restoration measures. The results showed that the stability safety factor of the covered slope decreased to 0.92 after raining for 18 h, and the instability risk was very high. When the vegetation had recovered, the stability of the soil-covered slope with root system was significantly improved, and its safety factor was close to 1.15 after 64 h of continuous rainfall. Throughout the field observation conducted from 2019 to 2022, the slope of abandoned rock mines was found to be lush with restored plant diversity. After several continuous rainfall processes, neither soil erosion nor instability phenomena were found there. The study has certain reference significance for the ecological restoration of abandoned rock mines in rainy regions.

Suggested Citation

  • Xiaoyan Li & Zipeng Qin & Yan Tian & Hongwei Zhang & Haitao Zhao & Jiafa Shen & Weilong Shao & Guangrong Jiang & Xianding Guo & Junsuo Zhang, 2022. "Study on Stability and Ecological Restoration of Soil-Covered Rocky Slope of an Abandoned Mine on an Island in Rainy Regions," Sustainability, MDPI, vol. 14(20), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:20:p:12959-:d:938535
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    References listed on IDEAS

    as
    1. Yi Zhang & Peng Li & Xiaojun Liu & Lie Xiao, 2022. "Changes in Soil Aggregate Fractions, Stability, and Associated Organic Carbon and Nitrogen in Different Land Use Types in the Loess Plateau, China," Sustainability, MDPI, vol. 14(7), pages 1-13, March.
    2. Jenneke M. Visser & Scott M. Duke-Sylvester, 2017. "LaVegMod v2: Modeling Coastal Vegetation Dynamics in Response to Proposed Coastal Restoration and Protection Projects in Louisiana, USA," Sustainability, MDPI, vol. 9(9), pages 1-20, September.
    3. Sung-Ho Kil & Dong Kun Lee & Jun-Hyun Kim & Ming-Han Li & Galen Newman, 2016. "Utilizing the Analytic Hierarchy Process to Establish Weighted Values for Evaluating the Stability of Slope Revegetation based on Hydroseeding Applications in South Korea," Sustainability, MDPI, vol. 8(1), pages 1-17, January.
    4. Zipeng Qin & Yuanming Lai & Yan Tian, 2021. "Study on failure mechanism of a plain irrigation reservoir soil bank slope under wind wave erosion," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 109(1), pages 567-592, October.
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