Minerals, Journal Year: 2023, Volume and Issue: 13(12), P. 1556 - 1556
Published: Dec. 18, 2023
The aeolian sand-box backfilling method proves effective for environmentally friendly coal extraction in northwestern regions, including Xinjiang. This study investigated the geomechanical characteristics of backfill material and its control effects on overlying strata through indoor experiments, mechanical analysis, numerical simulations. Uniaxial compression tests models with varying mesh sizes, wire diameters, dimensions revealed that larger sizes diameters increased bearing capacity material, while increasing had opposite effect. A analysis metal box deformation produced equations describing restraining force. Subsequent experiments simulations different consistently demonstrated material’s properties, stress-displacement curves closely aligned. 3DEC5.2 software highlighted effectiveness controlling displacement stress variations goaf areas. Notably, smaller-sized exhibited a more pronounced impact development.
Language: Английский