Numerical Simulation of Mining Overburden and Surface Deformation Law

De Shen Zhao; Dong Liang Guo

doi:10.4028/www.scientific.net/AMR.962-965.1066

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Numerical Analysis of Mining-Induced Overburden Stress Change Rule
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Research and Application of Mine Roadway Deformation Monitoring by Ultrasonic Technology
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Research on the Slope Sliding Mechanism of Excavation of Steeply Inclined Mine from Open-Pit to Underground
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Study of Coal and Rock Floor Failure Characteristics of Upper Protective Layer Mining
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Study on Strata Movement Control of Twice Strip Mining
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Numerical Simulation of Mining Overburden and Surface Deformation Law

Abstract:

In order to obtain overburden and surface deformation law, this paper takes S2S9 working face fully-mechanized mining of certain coal mine for example, uses the finite element ADINA software, and it establishes two-dimensional numerical model, analyzes overburden and surface deformation caused by the working face mining. The study shows the amount of each point movement in the top of the mined-out area gradually decreases from the bottom to up, and the range of surface movement is also increasing with advancement of the coal excavation. After the completion of the working face, it forms a subsidence curve which is symmetry for the maximum vertical point and an antisymmetric horizontal deformation curve. The zero point of horizontal movement is located above the center of mining sector, and the maximum tilt is 2.044mm·m.