کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6922645 865067 2015 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic simulation of landslide based on thermo-poro-elastic approach
ترجمه فارسی عنوان
شبیه سازی پوسته زمین لغزش بر مبنای رویکرد ترمو-پاور الاستیک
کلمات کلیدی
رانش زمین، رویکرد ترمو-پاور الاستیک، شبیه سازی، فشار بخار، گرمای اصطکاک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
Catastrophic landslides often extend for surprisingly long distances, a trend consolidated by a decrease in the apparent friction coefficient with an increasing landslide volume. However, there is not yet a physical model able to predict the long distances traveled by landslides in the condition of deformation. A two-dimensional model for simulating catastrophic landslide motion is presented in this paper and is based on a lump model for thermo-poro-elastic mediums. The model can concurrently simulate landslide dynamic processes, and pore pressure and frictional heating evolution in the shear zone at the bottom of a landslide. These are based upon the shallow-seated groundwater table assumption and depth-averaged integration, as well as the thermo-poro-elastic approach. A combined computational method based on the finite volume method and Crank-Nicolson method is proposed to solve the coupled equations. Four computational experiments have been run and the numerical results indicate that frictional heating enhances pore water pressure and reduces the friction, resulting in higher mobility and longer distances traveled. The value of pore water pressure can also influence the deformation process of a landslide.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Geosciences - Volume 75, February 2015, Pages 24-32
نویسندگان
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