Study of Effective Stress and Surface Subsidence in Pit Precipitation

Abstract:

Pit excavation and precipitation are bound to cause the changes of groundwater level and stress field in the soil body around the pit, which lead to the deformation of soil body and building around pit and produce varying degrees of influence on the surrounding environment. Based on variable and invariant total stress, this paper calculates the increment of effective stress in the influence range of precipitation, drawing a conclusion that decrement of pore-water stress and increment of effective stress are not simply equal. The methods of calculating surface subsidence caused by the foundation precipitation are summarized in this paper.

• Periodical: Advanced Materials Research (Volume 511)
• Pages: 188-191
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.511.188
• Online since: April 2012
• Authors: Huai Feng Tong
• Keywords: Calculation Method, Effective Stress Increment, Pit Precipitation, Stress Field, Surface Subsidence

References

[1] Tianqiang Yao, Zhenhua Shi: Pit Dewatering Manual [M]. Beijing: China Architecture and Building Press, 2006(In Chinese)