Failure Mode and Stability Evolution Method of Counter-Tilt Slope Under Combined Surface and Underground Mining
详细信息
- 责任者：Wang Dong (Mining College ; Liaoning Technical University ; Fuxin 123000 ; China) ; Cao Lanzhu
- 刊名：The Chinese Journal of Geological Hazard and Control
- 出版年：2011
- 卷期：22(3)
- 关键词：岩质边坡 ; rock slope ; 边坡稳定性 ; slope stability
- 页码：p.33-38
- 图表：illus., 16 refs.
- 分类号：1702
- issnNo：ISSN1003-8035
- isbnNo：CN11-2825/P
摘要
How to demonstrate the deformation and failure mode of the slope under combine surface and underground mining and evaluate its stability scientifically is one of the problems that need urgent solutions in mining engineering.First,the deformation and failure mode of the slope under simple surface mining,the deformation and failure mechanism of the overlying strata affected by underground mining and deformation mechanism of the slope under combined surface and underground mining were analyzed,then the failure mode and the stability calculation method of the slope under combined surface and underground mining was studied.It can be shown that the failure modes of the slope under combined surface and underground mining involve three patterns: slipping failure,subsiding failure and slipping-subsiding combined failure,that the failure modes and the stability of the slope under combined surface and underground mining be significantly affected by the underground mining positions and the influence be mainly controlled by the length of the latent slide plane of the slope and the weakening degree of the rock masses in the subsidence range.Finally,a limit equilibrium method to calculate the slope stability under combined surface and underground mining was put forward.Finally,it was proved by the numerical simulation of a project case.
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