›› 2009, Vol. 30 ›› Issue (6): 1569-1574.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

On seepage forces and application

MAO Chang-xi，DUAN Xiang-bao   

  1. Nanjing Hydraulic Research Institute, Nanjing 210029, China
  • Received:2007-09-17 Online:2009-06-10 Published:2011-03-09

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Abstract:

Saturated seepage flow plays an important role to cause instability of soil-rock mass. The destruction forces, the passive “buoyant force” and the active “seepage force” induced by seepage are described. The mutual converted relation between seepage forces and boundary water pressures as well as their correct application to piping and landslide problems is discussed in detail. Using seepage force instead of boundary forces in landslide computation is recommended for its simplicity and accuracy. Misunderstanding about seepage force used in computation and design code is pointed out.

Key words: seepage force, buoyant force, pore water pressure, diagram of forces, piping, landslide

CLC Number: 

  • P 641.136
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