洞巴水电站厂房边坡在施工开挖作用下的动态稳定性研究  

Study on Dynamic Stability of Powerhouse Slope under Excavation of Dongba Hydropower Station

作　　者：罗冲[1] 刘谢伶[1] 

机构地区：[1]广西电力工业勘察设计研究院,广西南宁530023

出　　处：《红水河》2010年第6期72-74,78,共4页Hongshui River

摘　　要：利用FLAC3D模拟了洞巴水电站厂房边坡在施工开挖作用下的变形稳定状况,并对其进行了动态稳定性评价。洞巴水电站厂房边坡在施工开挖后虽然产生30多厘米的位移,但岩土体经过一段时间的应力调整后,变形又重新停止下来,并不会产生整体的滑动,但在暴雨时,变形又将重新启动,并可能会产生整体滑动。为保证洞巴水电站厂房的顺利安全施工提供了可靠的依据,也为评价正处在变形状态下的边坡稳定状况提供了新的可靠的方法。This article uses FLAC3D software to simulate the dynamic stability of powerhouse slope under excavation of Dongba Hydropower Station in Guangxi,China.Although the deformation of powerhouse slope has reached more than 30 centimeters,the stress in rock and soil of the slope is adjusted and slowly reaches a new balanced state after a period of time.So the deformation is paused and the whole sliding of the slope is prevented.But the deformation will occur again and the whole sliding may take place if the rainstorm comes.The article provides a reliable basis for safe construction of the slope and a new reliable method for evaluating stability of slope which is deforming.

关 键 词：施工开挖 动态稳定性 变形 整体滑动 洞巴水电站 

分 类 号：P642.2[天文地球—工程地质学]