DDA validation of the mobility of earthquake-induced landslides
DDA validation of the mobility of earthquake-induced landslides
复制标题
地震引发滑坡活动性的 DDA 验证
DOI：
10.1016/j.enggeo.2014.08.024
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发表时间：
2015-08
影响因子：
7.4
通讯作者：
P. Yu
中科院分区：
文献类型：
--
作者：
Y. Zhang;J. Wang;Q. Xu;G. Chen;J. X. Zhao;L. Zheng;Z. Han;P. Yu
本文研究了地震诱发滑坡的失稳问题。有超过20个力学模型来解释快速滑坡（包括一些地震引起的滑坡）的长时间运行。然而，值得注意的是，很少有人考虑地震荷载的滑坡运行的影响。在以前的研究中，我们已经提出了一个模型，这是所谓的多重加速度模型（MAM），来解释长跳动的机制，并进行了振动台试验，以验证MAM。由于以往的MAM模型是概念模型，且振动台试验中仅对单个石料进行了正弦波作用下的试验，因此需要对MAM模型进行进一步的扩展和验证，本文通过引入地震荷载的“蹦床效应”引起的运动变化对MAM模型进行了扩展，并采用最新的实用数值模拟程序--非连续变形分析（DDA），用于验证地震诱发滑坡的移动性。在建立滑坡概念模型验证地震荷载对滑坡动度影响的基础上，对2008年汶川地震诱发的典型长滑坡--东河口滑坡进行了分析。研究结果表明：地震荷载可能是最终有助于增加滑坡跳动的因素之一。
This paper studies the run-out of earthquake-induced landslides. There are more than 20 mechanical models to explain long run-out of rapid landslides including some earthquake-induced landslides. However, notably few of them considered the effect of seismic loading on the run-out of landslides. In a previous study, we have proposed a model, which is called the multiplex acceleration model (MAM), to interpret the long run-out mechanism, and a shaking-table test has been performed to verify the MAM. Because the previous MAM is a conceptual model and only a single stone has been examined under sine waves by the shaking-table test, the MAM needs to be extended and further verified.In this paper, the MAM was extended by introducing the movement change that was induced by the so-called trampoline effect of earthquake loading, and the latest practical numerical simulation program, discontinuous deformation analysis (DDA), was used to verify the mobility of earthquake-induced landslides. After a conceptual landslide model was used to verify the effect of seismic loading on the mobility, the Donghekou landslide, which was a typical long run-out landslide that was induced by the 2008 Wenchuan earthquake, was analyzed. The results show that: the seismic loading could be one of the factors that could eventually help increase the run-out of landslides.
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DOI：
10.1098/rspa.1954.0186
发表时间：
1954-01-01
影响因子：
--
作者：
BAGNOLD, RA
通讯作者：
BAGNOLD, RA
影响因子：
4
作者：
X. Kong;Jun Liu
通讯作者：
X. Kong;Jun Liu
汶川地震引发的最大滑坡特征及破坏机制，2008年5月12日，中国
影响因子：
6.7
作者：
Huang, Runqiu1;Pei, Xiangjun1;Fan, Xuanmei1, 2;Zhang, Weifeng1;Li, Shigui1;Li, Biliang1
通讯作者：
Li, Biliang1
DOI：
--
发表时间：
1968-08
期刊：
--
影响因子：
--
作者：
L. Mueller
通讯作者：
L. Mueller
影响因子：
3.6
作者：
T. Davies;M. McSaveney
通讯作者：
T. Davies;M. McSaveney