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| 1 | 库区滑坡涌浪数值模拟方法研究进展显示文摘对近年来库区滑坡涌浪涉及的边坡失稳、滑动、涌浪产生和传播这4个阶段研究中采用的数值模拟方法的研究进展和发展趋势进行了综述,重点归纳总结了边坡滑动过程以及涌浪产生过程的数值模拟方法的研究成果,指出滑坡涌浪从库区边坡失稳到涌浪传播是一个完整连续的过程,今后需要在目前各个阶段独立研究的基础上融合固体力学和流体力学两类学科中的相关研究方法,建立库区滑坡涌浪全程数值模拟方法,实现滑坡涌浪的全过程模拟。 | 赵兰浩 侯世超 毛佳 | 2016 | 水利水电科技进展2016，36，2： | 23 |
| 2 | 观音岩滑坡潜在失稳模式及成灾规模数值模拟显示文摘基于颗粒接触的无网格方法(PCMM)以颗粒离散元的几何构型为依托,将研究区域用一系列颗粒进行离散,而后基于颗粒间复杂丰富的接触信息构建三角形单元,并在单元中引入Mohr-Coulomb理想弹塑性本构模型。计算过程中,随着颗粒间接触信息的变化,一些畸变单元将会被自动删除,一些新单元将会被自动创建。通过单元的删除及重建,即可解决滑坡数值模拟中因网格畸变导致的系统能量发散问题。利用PCMM方法结合强度折减思路,对重庆黔江观音岩滑坡的潜在失稳模式及成灾规模进行了探讨。计算结果表明,观音岩滑坡为典型的土质推移式滑坡,滑体后部先出现失稳破坏,并出现局部张拉裂缝;剩余下滑力的转移导致滑体前部出现剪切破坏;最后滑体中部出现破坏;滑移面形成的顺序为后部、前部、中部。观音岩滑坡失稳后,滑体涌入黔江河道的方量与强度折减系数呈线性关系,随着强度折减系数的增加,滑体涌入量线性增加。强度折减系数为1.3时,滑体涌入量约为3万方;强度折减系数为2.0时,滑体涌入量约为25万方。 | 冯春 李世海 李继锋 | 2014 | 地下空间与工程学报2014，10，5： | 3 |
| 3 | Model test and numerical simulation on the dynamic stability of the bedding rock slope under frequent microseisms显示文摘Shake table testing was performed to investigate the dynamic stability of a mid-dip bedding rock slope under frequent earthquakes. Then, numerical modelling was established to further study the slope dynamic stability under purely microseisms and the influence of five factors, including seismic amplitude, slope height, slope angle, strata inclination and strata thickness, were considered. The experimental results show that the natural frequency of the slope decreases and damping ratio increases as the earthquake loading times increase. The dynamic strength reduction method is adopted for the stability evaluation of the bedding rock slope in numerical simulation, and the slope stability decreases with the increase of seismic amplitude, increase of slope height, reduction of strata thickness and increase of slope angle. The failure mode of a mid-dip bedding rock slope in the shaking table test is integral slipping along the bedding surface with dipping tensile cracks at the slope rear edge going through the bedding surfaces. In the numerical simulation, the long-term stability of a mid-dip bedding slope is worst under frequent microseisms and the slope is at risk of integral sliding instability, whereas the slope rock mass is more broken than shown in the shaking table test. The research results are of practical significance to better understand the formation mechanism of reservoir landslides and prevent future landslide disasters. | Deng Zhiyun Liu Xinrong Liu Yongquan Liu Shulin Han Yafeng Liu Jinhui Tu Yiliang | 2020 | Earthquake Engineering and Engineering Vibration2020，19，4： | 3 |
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