别斯库都克煤矿南帮边坡破坏机理及致灾模式

Failure mechanism and disaster pattern of south slope in Bescuduk Coal Mine

为了揭示边坡失稳的影响因素以及边坡内岩体应力分布状态与其自身强度特性之间的相互作用;采用理论研究与数值模拟相结合的研究方法,对别斯库都克煤矿南帮边坡变形破坏模式进行研究,分析边坡受力及变形破坏特征,以及边坡可能存在的滑动规律及破坏模式,得出研究区域边坡变形破坏机理。结果表明:南帮边坡破坏模式为“顺层剪切”破坏,最大剪应力出现在“顺层岩层深部”区域,并沿“泥岩弱层”发生剪切变形。

In order to reveal the influencing factors of slope instability and the interaction between the stress distribution of rock mass in the slope and its own strength characteristics,the article uses the research method of combining theoretical research with numerical simulation,studies the deformation and failure mode of south slope,in Bescuduk Coal Mine analyzes the stress and deformation and failure characteristics of the slope,analyzes the possible sliding law and failure mode of the slope,and obtains the deformation and failure mechanism of the slope in the study area.The results show that the failure mode of the south slope is“bedding shear”,the maximum shear stress occurs in the“deep bedding”area,and shear deformation occurs along the“weak mudstone layer”.Key word:slope instability;numerical simulation;failure mechanism;deformation and failure characteristics;stress field.