Development Law of Seismic Subsidence of Loess through In Situ Explosion Test

Abstract:

To reveal development law of seismic subsidence of loess, through in-situ explosion test at one loess site, ground settlement and layered underground settlement were monitored, by which the time-space-domain development of seismic subsidence of loess are gained. Furthermore, the time-domain development law of seismic subsidence in different directions is analyzed, so as the variation characteristics of layer-settlement and its contribution rate, and the development law of seismic subsidence distribution in the horizontal direction. The time-domain development of seismic subsidence of loess consists of rapidly growing stage and slowly growing stage. The former is under blasting ground motion, and its seismic subsidence ratio approaches to 46.5% invariably. While in the later stage, development of seismic subsidence ratio can be described by power function with index of 0-1. And, seismic subsidence distribution and contribution rate of layer-settlement are varying with time, which are consistent to the time-domain development law of seismic subsidence.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1822-1829
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1822
• Online since: November 2012
• Authors: Qiang Wang*, Jun Jie Sun, Lan Min Wang
• Keywords: Blasting Ground Motion, Loess Site, Seismic Subsidence, Time-Domain Development Law

References

[1] Zudian Liu: Mechanics and Engineering of Loess (Shaanxi Science and Technology Press, China 1997 ), In Chinese.

[2] Dingyi Xie: Chinese Journal of Geotechnical Engineering. Vol.23(2001), P.3, In Chinese.

[3] Zhenzhong Zhang: Earthquake Disaster Predication in Loess Area (Earthquake Press, China 1999) , In Chinese.

[4] Lanmin Wang: Loess Dynamics (Earthquake Press, China 2003) , In Chinese.

[5] Dongsheng Liu: Loess and Environment (Science Press, China 1985) , In Chinese.