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ORTHOGONAL METHOD-BASED SENSIBILITY ANALYSIS OF LANDSLIDE SLOPE STABILITY

ZHANG Yan;ZOU Ming;OU Zhe;JIN Yong qiang;Hongda Guoyuan(Wuhu) Resources and Environment Management Co.Ltd.;School of Highway Academy,Chang an University;  
For a given landslide(slope rate,slope height already known),stability coefficient is affected by such factors as cohesive strength of slide zone soil,internal friction angle,unit weight of slip mass and pore water pressure.Owing to the effect of each factor on the coefficient to a different degree(difference in sensibility),a quantitative standard is needed to find out the significant factors as the key subject for landslide treatment and improving treatment result.Taking a landslide at the Qinghua Temple in Baota District of Yan'an City as example,this paper analyzed the factors that affect landslide slope stability using orthogonal method,calculated various combinations of stability coefficients,and then made sensibility evaluations on the factors by method of analysis of variance.
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