SYSTEM DYNAMICS BASED UNLOAD-LOAD RESPONSE RATIO PARAMETER AND ITS APPLICATION TO EVALUATING DEBRIS LANDSLIDE STABILITY

CHEN Weigong; HE Keqiang; ZHANG Juan

Volume 21 Issue 4

Aug. 2013

Turn off MathJax

Article Contents

Article Navigation > JOURNAL OF ENGINEERING GEOLOGY > 2013 > 21(4): 570-576

CHEN Weigong, HE Keqiang, ZHANG Juan. 2013: SYSTEM DYNAMICS BASED UNLOAD-LOAD RESPONSE RATIO PARAMETER AND ITS APPLICATION TO EVALUATING DEBRIS LANDSLIDE STABILITY. JOURNAL OF ENGINEERING GEOLOGY, 21(4): 570-576.

Citation:

CHEN Weigong, HE Keqiang, ZHANG Juan. 2013: SYSTEM DYNAMICS BASED UNLOAD-LOAD RESPONSE RATIO PARAMETER AND ITS APPLICATION TO EVALUATING DEBRIS LANDSLIDE STABILITY. JOURNAL OF ENGINEERING GEOLOGY, 21(4): 570-576.

Citation:

PDF( 839 KB)

SYSTEM DYNAMICS BASED UNLOAD-LOAD RESPONSE RATIO PARAMETER AND ITS APPLICATION TO EVALUATING DEBRIS LANDSLIDE STABILITY

1.
Management College, Qingdao Technological University, Qingdao 266520;
2.
Engineering Technique Research Center of Geoenvironment and Impact, Shandong Province, Qingdao 266033

Funds:

Received Date: 2012-05-10
Rev Recd Date: 2013-02-28
Publish Date: 2013-08-25

Abstract

Abstract

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' Y'- and Y'0,the overall unstability of landslide would appear. That shows it is available to use the unload-load response ratio to forecast landslide's deformation stage and as a criterion of landslide instability.
- Unload-load response ratio,
- Debris landslide,
- System dynamic,
- Stability Evaluating

FullText(HTML)

References(1)

References

[1] 薛果夫, 吕贵芳,任江.新滩滑坡研究[A].新滩滑坡讨论会论文集[C].北京:科学出版社, 1988, 39～41.

Xue Guofu, Lü Guifang, Ren Jiang. Study on Xintan landslide. Proceedings of Discussion on Xintan Landslide. Beijing: Science Press, 1988, 39～41.

[2] 尹祥础, 尹灿.非线性系统的失稳前兆与地震预报-响应比理论及其应用[J].中国科学, 1991,(5): 512～518.

Yin Xiangchu, Yin Can. Nonlinear system unstable precursors and earthquake prediction-response ratio theory and its applications. Science China, 1991,(5): 512～518.

[3] 许强, 黄润秋.用加卸载响应比理论探讨斜坡失稳前兆[J].中国地质灾害与防治学报, 1995, 6 (2): 25～30.

Xu Qiang, Huang Runqiu. Studies on the precursor of slope instability to the load-unload response ratio theory. The Chinese Journal of Hazard and Control, 1995, 6 (2): 25～30.

[4] 黄承中. 考虑地下水作用的滑坡时间预测研究[J].工程地质学报, 2011, 19 (6): 816～822.

Huang Chengzhong. Prediction of landsliding time under action of groundwater. Journal of Engineering Geology, 2011, 19 (6): 816～822.

[5] 贺可强, 周敦云,王思敬.降雨型堆积层滑坡的加卸载响应比特征及其预测作用与意义[J].岩石力学与工程学报, 2004, 23 (16): 2665～2670.

He Keqiang, Zhou Dunyun, Wang Sijing. Features of load-unload response ratio and its significance in predication of colluvial landslide induced by rainfall. Chinese Journal of Rock Mechanics and Engineering, 2004, 23 (16): 2665～2670.

[6] 贺可强, 王荣鲁,李新志,等.堆积层滑坡的地下水加卸载动力作用规律及其位移动力学预测[J].岩石力学与工程学报, 2008, 27 (8): 1644～1651.

He Keqiang, Wang Ronglu, Li Xinzhi,et al. Unload dynamic law of groundwater level and dynamic displacement prediction of debris landslide. Chinese Journal of Rock Mechanics and Engineering, 2008, 27 (8): 1644～1651.

[7] 贺可强, 阳吉宝,王思敬.堆积层滑坡位移动力学理论及其应用——三峡库区典型堆积层滑坡例析[M].北京: 科学出版社, 2007.

He Keqiang, Yang Jibao, Wang Sijing. Dynamic Displacement Theory of Debris Landslide and Its Application. Beijing: Science Press, 2007.

[8] S Agostoni, et al. Landslide inventory data base for alpine area, Lombardia, Italy. 8^th International IAGE Congress, 21～25,Sept, 1998, 919～923.

[9] 叶正伟. 长江新滩滑坡的历史分析,趋势预测与启示[J].灾害学, 2000, 15 (3): 30～34.

Ye Zhengwei. Analysis of the history and developing trend of xintan landslides and the enlightenment elicited from its detailed expatiation. Disaster Science, 2000, 15 (3): 30～34.

[10] 王尚庆. 长江三峡滑坡监测预报[M].北京: 地质出版社, 1999, 17.

Wang Shangqing. Monitoring and Prediction of Landslide in Three Gorges. Beijing: Geologecal Publishing House, 1999, 17.

Relative Articles

Supplements(0)

Cited By

Proportional views