Study on the Regularity of Surface Movement and Deformation in Long Coal Face with Large Mining Height

Zu Qiang Xiong; Jun He; Lei Lei Zhao

doi:10.4028/www.scientific.net/AMR.594-597.86

Paper Titles

Calculation and Analysis of Rock Stress State near the Bit
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The Study on Key Issues of Slope Instability during Turning Open-Pit into Underground Mining
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Experimental Comparison Study of Stress Sensitivity at Different Levels of Permeability Core
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Influence of Underground Mining on Failure Mode and Stability of Counter-Tilt Slope in Surface Mines
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Study on the Regularity of Surface Movement and Deformation in Long Coal Face with Large Mining Height
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Study on the Treatment Measures of Expansive Rock Slope
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Study on the Impact of Cyclic Wetting and Drying on the Shear Strength of Stabilized Expansive Soils
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Analysis on Mesoscopic Dynamic of Soft Soil Foundation in the Pearl River Delta Region Based on the Vacuum Preloading Method
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Model Test Based on Mechanical Characteristics of Slope Anchor and Water Influence
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 594-597Study on the Regularity of Surface Movement and...

Study on the Regularity of Surface Movement and Deformation in Long Coal Face with Large Mining Height

Abstract:

It is an important way to realize mine intensive production by increasing of the coal face length. During the transformation period of mining methods about thick coal seams, the character parameters of surface movement and deformation will be provided to guarantee scientifically mining of thick coal seams in Jincheng mining area. In this paper, numerical simulation, theoretical analysis and field measurement are used for studying the influence of coal face length on surface movement and deformation in the condition of large height mining. The results show that the separated strata space range extended with the increasing of coal face length and advancing distance, the surface movement and deformation become more violent, the mining influenced range also gradually expands, and the maximum surface subsidence and horizontal displacement increases gradually in form of linear relationship. In the condition of fast mining, the duration of abscission layer reduces, and the surface movement and deformation shows obviously hysteretic and zonal characteristic.