Volume 22 Issue 1
Feb.  2014
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YU Huili, LONG Jianhui, LIU Haisong, JI Yanqing, ZHANG Zhong. 2014: ENGINEERING GEOLOGY DIVISION OF LOESS SLOPE AND ITS STRENGTH PARAMETER SELECTION IN LV-LIANG MOUNTAINOUS AREA. JOURNAL OF ENGINEERING GEOLOGY, 22(1): 152-159.
Citation: YU Huili, LONG Jianhui, LIU Haisong, JI Yanqing, ZHANG Zhong. 2014: ENGINEERING GEOLOGY DIVISION OF LOESS SLOPE AND ITS STRENGTH PARAMETER SELECTION IN LV-LIANG MOUNTAINOUS AREA. JOURNAL OF ENGINEERING GEOLOGY, 22(1): 152-159.

ENGINEERING GEOLOGY DIVISION OF LOESS SLOPE AND ITS STRENGTH PARAMETER SELECTION IN LV-LIANG MOUNTAINOUS AREA

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  • Received Date: 2013-02-28
  • Rev Recd Date: 2013-08-29
  • Publish Date: 2014-02-25
  • Based on Shanxi highway engineering geological zoning map, the most typical loess hilly and gully area(I) is further divided into the Northern Shanxi(Ia),Jin West(Ib), and Jin Southwest(Ic). The three sub-regions are distinguished according to the elements of the slope types, stratigraphic combination and slope failure mode loess. The parameter values of peak intensities, start strengths and residual strengths are obtained from different direct shear test methods after experimental study on the area(I) of 53 highway slopes. An analogy between the geological characteristics of the slope and the real engineering surveys is drawn. Statistic and numerical analysis of slope stability under the three intensity parameters in the three sub-regions are made. It is then found that the strength parameters have significant differences in different geographical characteristics. The Jin Northwest(Ia) has less rainfall and less tectonic activity. For slope to slope failure, the peak intensity slope design is more appropriate. The Jin West End(Ib) has structural development. Its seismic activity makes the relative decline in the strength of the soil. It has more old landslides. The residual strength should be used as the strength of the highway slope design parameters. There is a higher security guarantee. The Shanxi South West(Ic) has more rainfall. The start strength should be used in order to avoid geological disasters.
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