Construction of Diffusion Prediction Model for Coal Gangue Fly Ash Backfill Slurry based on Numerical Simulation
Abstract
Coal gangue and fly ash, as typical industrial solid wastes, have significant implications for ecological restoration in mining areas.
The diffusion behavior of backfill slurry directly affects the filling effect and engineering safety, yet traditional experimental methods struggle
to fully reveal its spatiotemporal evolution patterns. By establishing a numerical model that integrates rheological properties with porous medium effects, we can quantitatively analyze the mechanisms by which slurry viscosity, grouting pressure, and formation permeability influence
the diffusion radius. This provides theoretical support for optimizing mix parameters and construction techniques, promoting the development
of solid waste backfilling technology towards precision and intelligence.
The diffusion behavior of backfill slurry directly affects the filling effect and engineering safety, yet traditional experimental methods struggle
to fully reveal its spatiotemporal evolution patterns. By establishing a numerical model that integrates rheological properties with porous medium effects, we can quantitatively analyze the mechanisms by which slurry viscosity, grouting pressure, and formation permeability influence
the diffusion radius. This provides theoretical support for optimizing mix parameters and construction techniques, promoting the development
of solid waste backfilling technology towards precision and intelligence.
Keywords
Numerical simulation; Gangue fly ash backfill slurry; Diffusion; Prediction model; Construction
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PDFReferences
[1] Lu Hui. Research on the Development of Calcium-Silicon Gel as a Leach Barrier for Coal Gangue and Its Performance in Blocking
Heavy Metals [D]. Liaoning Technical University, 2024.
[2] Ouyang Shenjiang. Research on the Mechanism and Method of Filling with Coal-Based Solid Waste Environmental Functional Materi-
als in Mining Areas [D]. China University of Mining and Technology, 2024.
[3] Zhao Chengyi. Research on the Mechanical Properties and Structural Characteristics of Coal Gangue Subgrade Fill [D]. China University of Mining and Technology, 2024.
[4] Shi Menghan. Research on the Properties of Coal-based Solid Waste Filling Slurry Enhanced by Calcium-based Bentonite [D]. China
University of Mining and Technology, 2024.
DOI: http://dx.doi.org/10.70711/eph.v2i4.6894
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