复合采动边坡变形机理及稳定性评价

徐杨青; 吴西臣

复合采动边坡变形机理及稳定性评价

中煤科工集团武汉设计研究院武汉 430064

详细信息

作者简介:
徐杨青,工程地质专业.Email:xyq@zh-geo.com

中图分类号: TU454
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出版历程
- 收稿日期: 2011-02-09
- 修回日期: 2011-06-14
- 刊出日期: 2011-08-24

DEFORMATION MECHANISM AND STABILITY ANALYSIS OF SLOPE UNDER COMBINED MINE

Wuhan Design and Research Institute of Sinocoal International Engineering Group,Wuhan 430064

摘要

摘要: 在边坡下采煤,井工开采不仅使边坡岩土体结构发生破坏,物理力学强度降低,同时还会引起边坡岩土体中的应力发生重分布,对露天边坡的变形及稳定性将产生较大影响。本文以山西平朔安太堡露天矿东帮边坡在B900工作面井采影响下的位移监测资料为基础,分析总结了露井联合开采条件下边坡变形规律及机理,并结合结构面组合判断、FLAC数值模拟、极限平衡验算等方法对边坡的破坏模式及稳定性进行分析评价,稳定性评价结果表明:该边坡在井采效应影响下,其整体稳定性将有所降低,但不会发生整体滑坡破坏,其破坏形式为边坡表层的黄土及基岩崩塌破坏为主。该结论与现场实际情况基本一致,可为类似矿区提供参考。
- 采动边坡 /
- 复合采动 /
- 边坡变形机理 /
- 时空效应 /
- 稳定性分析
Abstract: Underground mining under slope can not only cause that the construction of rock mass is destructed and the mechanical properties are reduced,but also lead to that the state of stress is redistributed and affect the deformation and stability of slope greatly.This paper takes the underground mining of B900 under the east slope of the Antaibao open mine as example.Based on the deformation monitoring data,the deformation law and mechanism are summarized.The stability of slope is estimated by the method of stereographic projection analysis,FLAC numerical simulation and limit equilibrium method.Stability evaluation shows that: under the influence of the underground mining,the stability will be reduced,but the overall landslide does not be occurred,the disrupted type of the slope is the sliding collapse.The conclusion is the same to the field practical situation,and can supply reference to similar mining area.
- Mining slope /
- Combing mining /
- Deformation mechanism of slope /
- Space-time effect /
- Stability analysis

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参考文献(1)

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