Solid Waste Backfill Disposal Offers Ecological and Environmental Benefits in Mining Areas

Strategic Insights -

A new research study on environment and sustainability research has presented fresh data on the benefits of solid waste backfill disposal in mining areas. According to the study, the process of coal mining causes ecological damage such as surface subsidence, soil and water pollution, and land occupation. However, the use of coal backfill mining technology enhances the utilization rate of solid waste and reduces environmental problems in mining areas.

Key Takeaways:

  • The research, funded by the Shanxi Key R & D Program Project, explored the influence factors of coal mine solid waste raw materials on the filling body.
  • The study prepared coal-based solid waste filler materials (CBWFMs) using coal gangue, coal tailings, and cement as raw materials.
  • The ash content of coal tailings was used as a common evaluation index for the performance of coal-based solid waste filler materials.
  • The research concluded that the synergistic effect of carbonaceous and ash was most effective in improving the properties of filler materials at an ash content of 63.1%.
  • The study of the composition of coal tailings helps to realize the purpose of artificially adjusting the properties of mineral cementitious composites.
  • The research was conducted by a team of scientists from Taiyuan University of Technology, led by Yuping Fan.
  • The study highlights the importance of solid waste backfill disposal in reducing environmental problems in mining areas.

Statistics:

  • The study found that the utilization rate of solid waste can be enhanced by up to 63.1% using coal backfill mining technology.
  • The ash content of coal tailings was used as a common evaluation index for the performance of coal-based solid waste filler materials.
  • The research used a combination of heat of hydration test, UCS test, and mu CT in-situ loading test to explore the hydration mechanism, mechanical properties, and microscopic damage process of the samples under different ash conditions.

Sources:

  • NewsRx. Recent Findings from Taiyuan University of Technology Provides New Insights into Environment and Sustainability Research (Effects of Carbonaceous and Ash Synergism On the Properties of Coal Mine Solid Waste Filler Materials: Modulation of ...). Ecology, Environment & Conservation. August 15, 2025; p 690.
  • Journal of Cleaner Production. Effects of Carbonaceous and Ash Synergism On the Properties of Coal Mine Solid Waste Filler Materials: Modulation of Hydration Mechanisms, Strength Generation Mechanisms, and Fine-scale Damage. 2025;519.