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The optimal framework and model to balance underground coal mining and cropland protection in Jining, eastern China

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  • Li, Gensheng
  • Hu, Zhenqi
  • Li, Pengyu
  • Yuan, Dongzhu
  • Wang, Wenjuan
  • Yang, Kun

Abstract

Coal and cropland resources play a vital role in energy safety and grain supply, respectively. However, the social growth that is driven by coal mining is followed by cropland damage, reductions in grain yields, and human-land conflict, all of which impede the sustainable development of coal mining and food safety. Thus, finding a way to optimize both coal mining and farmland protection in the coal-cropland overlapping area is crucial. In this paper, we constructed theoretical and empirical models to analyze the impact of the working face width on cropland with non-full subsidence based on the extent of cropland damage due to land subsidence caused by mining. Taking the Jining Coalfield with its high groundwater table as an example, this critical land subsidence was discussed based on the groundwater level (reclamation timing), suitable groundwater depth of crop growth, and coal mining efficiency. In addition, the reasons for surface ponding were analyzed caused by underground coal mining. The results showed that the surface ponding's anthropogenic item and internal factors are mining-induced land subsidence and the high groundwater table, respectively. These joint factors raise the groundwater level and lead to grainland damages which can be divided into four categories based on their extents (no effect, slight-reduction in yield, moderate-reduction in yield, and no harvest). Critical subsidence caused by mining width could optimize the groundwater depth or cropland damage. The calculated results from both models of the eight coal mines showed that the average mean deviation was 3.93%. The calculated results from the models were reliable, while the empirical model had fewer parameters and an easily calculable simple formula. The proposed optimal framework verified that the mining width needed to be reduced to 134m, 126m or 116m, 112m based on the groundwater depth or the damaged farmland in the Xinglongzhuang Coal Mine. The optimal framework will be of great significance for providing scientific references as to why the sustainable development of coal mining and grainland protection has been chosen.

Suggested Citation

  • Li, Gensheng & Hu, Zhenqi & Li, Pengyu & Yuan, Dongzhu & Wang, Wenjuan & Yang, Kun, 2021. "The optimal framework and model to balance underground coal mining and cropland protection in Jining, eastern China," Resources Policy, Elsevier, vol. 74(C).
    • Handle: RePEc:eee:jrpoli:v:74:y:2021:i:c:s0301420721003172
    DOI: 10.1016/j.resourpol.2021.102307
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    References listed on IDEAS

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    1. Hu, Zhenqi & Yang, Guanghua & Xiao, Wu & Li, Jing & Yang, Yaoqi & Yu, Yang, 2014. "Farmland damage and its impact on the overlapped areas of cropland and coal resources in the eastern plains of China," Resources, Conservation & Recycling, Elsevier, vol. 86(C), pages 1-8.
    2. Linghua Duo & Zhenqi Hu, 2018. "Soil Quality Change after Reclaiming Subsidence Land with Yellow River Sediments," Sustainability, MDPI, vol. 10(11), pages 1-13, November.
    3. Wu Xiao & Wenqi Chen & Tingting He & Linlin Ruan & Jiwang Guo, 2020. "Multi-Temporal Mapping of Soil Total Nitrogen Using Google Earth Engine across the Shandong Province of China," Sustainability, MDPI, vol. 12(24), pages 1-20, December.
    4. Ge, Dazhuan & Long, Hualou & Zhang, Yingnan & Ma, Li & Li, Tingting, 2018. "Farmland transition and its influences on grain production in China," Land Use Policy, Elsevier, vol. 70(C), pages 94-105.
    5. Artur Guzy & Agnieszka A. Malinowska, 2020. "Assessment of the Impact of the Spatial Extent of Land Subsidence and Aquifer System Drainage Induced by Underground Mining," Sustainability, MDPI, vol. 12(19), pages 1-28, September.
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    Cited by:

    1. Ruiya Zhang & Yoginder P. Chugh, 2023. "Sustainable Development of Underground Coal Resources in Shallow Groundwater Areas for Environment and Socio-Economic Considerations: A Case Study of Zhangji Coal Mine in China," IJERPH, MDPI, vol. 20(6), pages 1-19, March.
    2. Hu, Zhenqi & Li, Gensheng & Xia, Jianan & Feng, Zhanjie & Han, Jiazheng & Chen, Zanxu & Wang, Wenjuan & Li, Guodong, 2023. "Coupling of underground coal mining and mine reclamation for farmland protection and sustainable mining," Resources Policy, Elsevier, vol. 84(C).
    3. Li, Gensheng & Hu, Zhenqi & Li, Pengyu & Yuan, Dongzhu & Wang, Wenjuan & Han, Jiazheng & Yang, Kun, 2022. "Optimal layout of underground coal mining with ground development or protection: A case study of Jining, China," Resources Policy, Elsevier, vol. 76(C).
    4. Xiaotong Wang & Jiazheng Han & Jian Lin, 2022. "Response of Land Use and Net Primary Productivity to Coal Mining: A Case Study of Huainan City and Its Mining Areas," Land, MDPI, vol. 11(7), pages 1-16, June.

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