库区沿江公路的堆积体稳定性分析  

Stability Analysis of Accumulation Body in the Reservoir Area of a Hydropower Station

作　　者：熊丽婷 伍曾[1] 王斌 XIONG Liting;WU Zeng;WANG Bin(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500;不详)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500 [2]国家林业和草原局昆明勘察设计院,昆明650216

出　　处：《工业安全与环保》2020年第11期47-52,共6页Industrial Safety and Environmental Protection

摘　　要：以某库区沿江公路的堆积体为例,一方面依据丰富的表面变形监测成果和深层变形监测成果,对该堆积体的稳定性进行了定性分析,结果表明堆积体处于缓慢的蠕动变形状态。另一方面,采用二维极限平衡法对不同工况下堆积体各个剖面的不同滑移模式进行计算分析,并依据摩根斯坦-普莱斯法计算所得的稳定系数定量判别堆积体的稳定性,结果表明堆积体前缘局部稳定性较差,水位骤降和地震作用对堆积体的整体稳定性和局部稳定性都有不利影响。最后,根据分析结果提出保证人民生命财产安全的3条建议,为该堆积体后期的综合治理提供地质技术支持,为此类工程的稳定性安全保障提供经验。Taking the accumulation body along a river in a reservoir area as an example,on the one hand,based on the abundant surface deformation monitoring results and deep deformation monitoring results,a qualitative analysis of the stability of the accumulation body is performed.The results show that the accumulation body is in a slow creep deformation state.On the other hand,the two-dimensional limit equilibrium method is used to calculate and analyze the different slip modes of each section of the accumulation body under different working conditions,and also according to the stability coefficient calculated by the Morgan Stein-Pryce method,the stability of the accumulation body is determined quantitatively.The results show that the local stability of the front edge of the accumulation body is poor,and the sudden drop of the water level and the earthquake action have an adverse effect on the overall stability and local stability of the accumulation body.Finally,based on the analysis results,three suggestions are made to ensure the safety of people's lives and property,which provides geological technical support for the comprehensive treatment of the accumulation body in the later period,and experiences for the stability and security of such projects.

关 键 词：堆积体 变形监测 二维极限平衡法 稳定性 

分 类 号：U412.22[交通运输工程—道路与铁道工程]