›› 2009, Vol. 30 ›› Issue (4): 1035-1040.

• Geotechnical Engineering • Previous Articles     Next Articles

Stability analysis of coal measure soil slope under rainfall infiltration

ZHU Lei 1,2，HONG Bao-ning 1,2   

  1. 1. Key Laboratory of Geomechanics and Embankment Engineering of Education Ministry, Hohai University, Nanjing 210098, China； 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China
  • Received:2007-09-26 Online:2009-04-10 Published:2011-01-30

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Abstract:

With the FEM program of transient unsaturated seepage calculation, the seepage field of coal measure soil slope after excavating and weathering affected by the infiltration process of rainfall is simulated and analyzed according to the monitor ed daily rainfall data in July. Then, based on Morgenstern-Price method, the transient safety factor of coal measure soil slope is computed and analyzed by means of unsaturated soil strength theory and calling seepage results at different rainfall times. The results obtained show that the dangerous slip surface of the slope and its relative safety factor is affected and vibrated with water in different parts of the slope, meanwhile; rainfall infiltration and stability analysis considering weathered layer is more reasonable in coal measure soil slope.

Key words: coal measure soil, rainfall, seepage, landslide, transient stability

CLC Number: 

  • TD 824.7
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