喇嘛溪沟冲刷切割模型稳定性FLAC数值分析  

FLAC Numerical Analysis on Scouring and Cutting Model Stability for Nama Channel

作　　者：唐承平[1] 王昊宇[1] 廖昕[2] 

机构地区：[1]四川雅西高速公路有限责任公司,成都610041 [2]西南交通大学土木工程学院,成都610031

出　　处：《路基工程》2010年第4期44-47,共4页Subgrade Engineering

基　　金：四川省交通厅交通建设科技项目(2006A24-57)

摘　　要：通过理论分析和FLAC数值模拟对重力侵蚀下冲刷切沟作用的喇嘛溪沟边坡进行研究,包括塑性区、剪应力、剪应变及位移矢量变化等几方面。结果表明,这类边坡在长期重力、水力侵蚀作用下,将会影响其稳定性。可供通过该区域的雅安—石棉—泸沽高速公路设计施工参考。Through theoretical analysis and FLAC numerical simulation,this paper studies the slope of Nama Channel under scouring and cutting by gravity from plastic zone,shear stress,shear stain and displacement vector changes.It is indicated that this kind of slope will be affected on its stability under the effect of long-term gravity and water erosion,which provides the reference for design and construction of Ya＇an-Shimian-Lugu Expressway through this region.

关 键 词：重力侵蚀 冲刷切割 FLAC 稳定性 

分 类 号：P512.22[天文地球—地质学]