›› 2011, Vol. 32 ›› Issue (1): 207-210.

• Geotechnical Engineering • Previous Articles     Next Articles

Application of deterministic model to analyzing stability of hillslope of loess gully area

KANG Chao 1, 2，CHEN Wen-wu 1,2，ZHANG Fan-yu2，HE Fa-guo 1,2，SONG Bing-hui 1, 2   

  1. 1. Key Laboratory of Mechanics on Disaster and Environment in Western China of Ministry of Education, Lanzhou University, Lanzhou 730000, China; 2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
  • Received:2009-08-19 Online:2011-01-10 Published:2011-01-19

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Abstract:

SHALTAB combines steady state hydrology assumptions and the infinite slope stability model to evaluate the distribution and the trend of shallow landslide. Taking Huachi county of Longdong in Gansu Loess Plateau region as study area, the availability and reliability of SHALSTAB for slope stability analysis of the loess gully area are evaluated. The degree distribution map of stability index is obtained by the digital elevation model constructed from 1:5 000 scale contour map, the slope of the terrain from DEM, physico-mechanical parameters of loess provided by field investigation and laboratory tests, and soil thickness data got from materials of boreholes and exploration trenches. By comparing the distribution of landslide from field surveys with model predictions, it is shown that the overall accuracy is 70.23%; landslide prediction accuracy is 72.33%; stability prediction accuracy is 67.51%. The simulation results are rational.

Key words: SHALSTAB, stability, shallow landslide, loess area

CLC Number: 

  • P 642.22
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