Parameter inversion and deformation mechanism of Sanmendong landslide in the Three Gorges Reservoir region under the combined effect of reservoir water level fluctuation and rainfall
Parameter inversion and deformation mechanism of Sanmendong landslide in the Three Gorges Reservoir region under the combined effect of reservoir water level fluctuation and rainfall
复制标题
水库水位升降与降雨共同作用下三门洞滑坡参数反演及变形机制
DOI：
10.1016/j.enggeo.2015.10.014
复制
发表时间：
2016-04
影响因子：
7.4
通讯作者：
Li Chunguang
中科院分区：
文献类型：
--
作者：
Sun Guanhua;Zheng Hong;Huang Yaoying;Li Chunguang
前期研究认为，钱江坪滑坡是三峡水库首次蓄水后降雨与水库水共同作用造成的。三门洞滑坡长830m，面积2.49×105m2，平均厚度22m，体积5.48×105m3，位于长江支流清感江畔，距同江另一著名滑坡——钱江坪滑坡仅4公里。基于滑坡力学参数和位移监测的实验数据，采用遗传算法，通过均匀设计、数值计算和人工神经网络，建立了破坏体力学参数与滑坡位移之间的非线性映射关系。通过计算位移与监测位移之间的偏差的全局最小化来获得失效质量的力学参数。在此基础上，详细分析了降雨和水库水位波动共同作用下三门洞滑坡的变形机制。结果表明，三门洞滑坡位移的增加主要是水库水位波动和降雨共同作用的结果。
Previous studies suggested that the Qianjiangping landslide was caused by the combined effect of rainfall and reservoir water after the first water storage of the Three Gorges Reservoir. The Sanmendong landslide with a length of 830 m, an area of 2.49 × 105m2, an average thickness of 22 m and a volume of 5.48 × 105m3, which is located by the Qinggan river, a tributary of the Yangtze River, is only 4 km away from another famous landslide along the same river: the Qianjiangping landslide. Based on the experimental data of mechanical parameters of the landslide and displacement monitoring, a nonlinear mapping relationship between mechanical parameters of the failure mass and the displacement of landslide were established by using genetic algorithms by means of uniform design, numerical calculation and artificial neural networks. The mechanical parameters of the failure mass are obtained by the global minimization of the deviation between the calculated displacements and the monitored displacements. On this basis, the deformation mechanism of the Sanmendong landslide under the combined effect of rainfall and reservoir water level fluctuations was analyzed in detail. The results indicated that the increase of displacement of Sanmendong landslide can be primarily attributed to the combined result of reservoir water level fluctuation and rainfall.
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DOI：
--
发表时间：
2007
期刊：
Hydrogeology and Engineering Geology
影响因子：
--
作者：
Peng Xuan-min
通讯作者：
Peng Xuan-min
DOI：
10.1080/17499518.2014.897488
发表时间：
2014-03
期刊：
Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards
影响因子：
--
作者：
P. Samui;R. Hariharan;Jayaraman Karthikeyan
通讯作者：
P. Samui;R. Hariharan;Jayaraman Karthikeyan
DOI：
10.1007/s11431-011-4370-8
发表时间：
2011-04
期刊：
Science China Technological Sciences
影响因子：
--
作者：
Yu Zhao;P. Cui;L. Hu;T. Hueckel
通讯作者：
Yu Zhao;P. Cui;L. Hu;T. Hueckel
影响因子：
6.9
作者：
Y.J Shang;J.G Cai;W.D Hao;X.Y Wu;S.H Li
通讯作者：
Y.J Shang;J.G Cai;W.D Hao;X.Y Wu;S.H Li
DOI：
--
发表时间：
2010
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Xiao Shirong;Liu De-fu;Jiang Fu-xing;J. Xiaolan
通讯作者：
Xiao Shirong;Liu De-fu;Jiang Fu-xing;J. Xiaolan