摘要
地震引发的滑坡是一种严重的次生灾害现象。本研究以墨竹工卡滑坡为例,为研究地震荷载和地震耦合对边坡稳定性的影响,利用Geo-Studio数值模拟软件建立边坡稳定性数值模型,使用赤平投影分析法对数值模拟结果进行验证分析,通过数值计算得到相应的参数,得出边坡是否稳定。结果表明,随着地震强度的增加,边坡稳定性降低,边坡在地震作用下的稳定性评价指标是永久变形和稳定性安全系数。最后,通过对边坡动态稳定性的分析,提出相应的预防和治理措施建议。
Landslides triggered by earthquakes are a serious secondary disaster phenomenon.In order to study the influence of rainfall and seismic coupling on slope stability,a numerical model of slope stabil⁃ity was established by Geo-studio numerical simulation software,and the numerical simulation results were verified and analyzed by the stereographic projection analysis method,and the initial stress and stress distribution under permanent deformation and seismic action were directly obtained through nu⁃merical calculation,and the stability safety factor was calculated according to the seismic reaction analy⁃sis.The results show that with the increase of seismic intensity,the slope stability decreases,The stabil⁃ity evaluation index of the slope under the action of the earthquake is the permanent deformation and the stability safety factor.Finally,through the analysis of the dynamic stability of the slope,the deformation law of the slope and the change law of the safety factor are obtained.
作者
代超强
冯佳佳
卜崇阳
彭杨有
肖金锋
张甫
DAI chaoqiang;FENG Jiajia;BU Chongyang;PENG Yangyou;XIAO Jinfeng;ZHANG Fu(College of Engineering,Tibet University,Lhasa 850000,China)
出处
《河南科技》
2022年第8期127-130,共4页
Henan Science and Technology
基金
大学生创新性实验训练计划项目(S202110694024)
大学生创新性实验训练计划项目(2021XCX017)
自治区自然基金(XZ202001ZR0062G)
大学生创新性实验训练计划项目(202110694012)。
