Study on Aeolian Sand-Box Backfill Geomechanical Characteristics and Overlying Strata Control Effects DOI Open Access
Bo Zhao, Zhiyi Zhang,

Xiaoping Gong

et al.

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

Study on Aeolian Sand-Box Backfill Geomechanical Characteristics and Overlying Strata Control Effects DOI Open Access
Bo Zhao, Zhiyi Zhang,

Xiaoping Gong

et al.

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

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