偏心荷载作用下采空区地基稳定性研究  

The Study on Goaf Foundation Stability Under Eccentric Load

作　　者：易四海[1] 唐志新[1] 

机构地区：[1]煤炭科学研究总院唐山研究院,河北唐山063012

出　　处：《煤矿安全》2013年第3期33-36,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51074089)

摘　　要：通过分析偏心荷载作用下基底压力的分布规律,建立了偏心荷载影响深度的计算方法,并总结了偏心荷载作用下荷载面积下的地基附加应力分布规律,结论显示:偏心荷载作用下的影响深度计算与地表建(构)筑物处的裂深Hls密切相关,在对偏心荷载作用下的采空区进行地基稳定性评价时,应根据裂深Hls区别计算。Through analyzing the distribution laws of the foundation stress under the eccentric load, the calculation method of eccentric load influence depth is established, and the additional stress distribution law under the loading area is summarized under the eccentric load. The study shows that the influence depth calculation under the eccentric load is closely related with the fissure depth H1s of the surface building. When the evaluation is made for the foumtation stability under the eccentric load, it should be calculated differently according to the fissure depth H1s.

关 键 词：偏心荷载 采空区 采动影响深度 稳定性 

分 类 号：TD325.3[矿业工程—矿井建设]