不同煤层倾角对围岩及顶底板影响的数值模拟

Numerical Simulation of the Influence of Different Dip Angles on Wall Rock and Its Roof and Floor

摘要: 以安徽某煤矿倾角煤层采煤工作面的开采为工程背景，通过FLAC^3D大型模拟软件对不同煤层倾角采煤工作面开采后采场围岩及顶底板矿压分布规律进行研究。研究结果表明：倾角对煤层工作面开挖后采场围岩应力分布、支承压力的分布有显著影响。倾角煤层工作面开采后，采场顶板岩层的变形、破坏和运动形式不同于一般煤层工作面且采场顶板应力分布是不对称的。
- 倾角 /
- 围岩 /
- 顶底板 /
- 数值模拟 /
- 围岩应力 /
- 支承压力
Abstract: Taking the dip angle working face of a coal mine in Anhui province as engineering background, the ground pressure distribution laws of wall rock and roof and floor are studied through using the large-scale simulation software of FLAC^3D after coal mining. The research results show that the angle has all important effect on the distribution of the stress and bearing pressure after coal mining, the deformation behavior, destroy characteristics and moving laws of roof in dip angle working face are different with usual working face and the distribution of roof stress is asymmetrical.
- dip angle /
- wall rock /
- roof and floor /
- numerical simulation /
- the stress /
- bearing pressure

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