System Dynamics Based Unload-Load Response Ratio Parameter and Its Application to Evaluating Debris Landslide Stability
详细信息
- 责任者：Chen Weigong (Management College ; Qingdao Technological University ; Qingdao 266520 ; China) ; He Keqiang
- 刊名：Journal of Engineering Geology
- 出版年：2013
- 卷期：21(4)
- 关键词：滑坡 ; landslides ; 边坡稳定性 ; slope stability
- 页码：p.570-576
- 图表：3 illus., 3 tables, 10 refs.
- 分类号：1702
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
Aiming at the material composition and mechanical properties of the debris landslide,the theory that unload-load response ratio is taken as the evaluation parameter of landslide stability is put forward in the framework of system dynamics.Comparing and analyzing parameters of the unload-load response ratio and the load-unload response ratio,it is found that the unload-load response ratio parameters have more theoretical significance and practical application value in slope stability evaluation and engineering practice than the load-unload response ratio parameter.The unload-load response ratio parameter is determined and its feasibility is analyzed.Then,the model of unload-load response ratio,based on displacement acceleration and monthly rainfall,is established.As an example,the Xintan typical debris landslide is analyzed and calculated.The results show that the steady state reflected by the timing curve of the unload-load response ratio is consistent with the actual status.When Y’