[1]BI Lisi,CHEN Xiaofang,MA Haoming,et al.Analysis on Spatial Distribution Feature of Softsoil in Guangzhou Urban Region and its Seismic Subsidence Based on Dense Drillling Holes[J].Journal of Seismological Research,2018,41(04):637-646.
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Analysis on Spatial Distribution Feature of Softsoil in Guangzhou Urban Region and its Seismic Subsidence Based on Dense Drillling Holes
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 04
Page number:
637-646
Column:
Public date:
2018-10-20
- Title:
- Analysis on Spatial Distribution Feature of Softsoil in Guangzhou Urban Region and its Seismic Subsidence Based on Dense Drillling Holes
- Keywords:
- Guangzhou urban region; drillling hole; softsoil; earthquake; seismic subsidence
- CLC:
- P315.912
- DOI:
- -
- Abstract:
- Taking Guangzhou urban region with an area of 270 km2 as the study area,using about 12 000 drillling holes with a high density,we identified the softsoil layer,and analyzed its spatial distribution characteristics in detail. The results show that:The softsoil in Guangzhou urban is mainly composed of silt and muddy soil. Most of sections are single-layer,buried less than 6.0 m,and it is shallower in the middle and deeper in both sides of the north and south. The softsoil layer is rather thick,which shows thicker in the south and the west,thinner in the middle and the north,and thicker near the river,thinner far away from the river. Meanwhile,there exits two deposition centers where the softsoil layer is very thick. Besides,an evaluation of softsoil seismic subsidence in the Guangzhou urban region was made,and the result shows that the seismic subsidence of softsoil may happen in the west and the south of the study region when the strong earthquake occurred. And it will damage slightly,medium,or seriously in different zone because of the different thickness,buried depth,liquid index and void ratio of softsoil.
- References:
- -
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Last Update:
2018-10-30