摘要
基于数值模拟,以水库滑坡施工工程为例,建立数值模型。通过对水库滑坡变形破坏特征进行研究,开展边坡稳定性动态模拟分析、滑坡变形破坏特征定量研究分析以及渗透系数对水库滑坡变形破坏影响分析,得出水库边坡变形破坏特征,为后续工程提供参考。结果表明,水位下降速度安全系数随时间推移呈先减小后增大的变化趋势,并且水位下降速度越快,其安全系数越低;水平位移在初始阶段出现陡升现象,随着时间推移,水位下降速度越快,水平位移增长距离越大,并且安全系数越低,水平位移越大;不同水位下降速度条件下,安全系数随时间增加呈先减小后增大,并且水库滑坡渗透系数越大,其对边坡变形破坏影响越小。
Based on the numerical simulation, the reservoir landslide construction project is taken as an example, and the numerical model is thus established. Through the study of reservoir landslide deformation damage characteristics, the dynamic simulation analysis of slope sexual stability, the quantitative research analysis of landslide deformation damage characteristics and the influence of permeability coefficient on reservoir landslide deformation damage are carried out, from which the deformation damage characteristics of reservoir slopes are derived to provide reference for subsequent projects. The results show that the safety coefficient of water level decline rate shows a trend of decreasing and then increasing with time. And the faster the water level declines, the lower the safety coefficient. Horizontal displacement in the initial stage, horizontal displacement appears steep rise phenomenon, and with time, the faster the water level drop speed, the greater the horizontal displacement growth distance. And the lower the safety factor is, the larger the horizontal displacement is. Under the conditions of different water level drop speed, the safety coefficient decreases and then increases with time, and the larger the reservoir landslide permeability coefficient is, the smaller its influence on slope deformation damage is.
作者
付传林
FU Chuan-lin(Haiyan County Comprehensive Service Center for Agriculture Animal Husbandry and Water Conservancy,Haiyan 812299,Qinghai,China)
出处
《水利科技与经济》
2022年第12期116-120,共5页
Water Conservancy Science and Technology and Economy
关键词
数值模拟
水库滑坡
变形特征
定量分析
稳定性
numerical simulation
reservoir landslide
deformation characteristics
quantitative analysis
stability
