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2013 (Vol. 6, Issue: 21)
Article Information:

Optimization Inversion of the Ground Stress Field of Bohai Sea and Its Adjacent Area

Zongxiang Xiu, Baohua Liu, Qiuhong Xie, Guozhong Han, Yanpeng Zheng and Xishuang Li
Corresponding Author:  Zongxiang Xiu 

Key words:  Bohai sea and its adjacent area, ground stress, Hooke-Jeeves direct search method, least square method, optimization inversion, ,
Vol. 6 , (21): 4103-4109
Submitted Accepted Published
March 13, 2013 April 17, 2013 November 20, 2013
Abstract:

An optimization inversion model of the ground stress field of Bohai Sea and its adjacent area is established by combining Hooke-Jeeves optimization algorithm and finite element method. The study area was simplified into two 2D sections, a shallow and a deep section, for optimization inversion analysis in consideration of the spatial distribution of the measuring points. The main faults in the study area were simulated by 2D surface to surface contact model, in which the friction state between hanging wall and footwall was modeled by Coulomb friction model. The objective function is established by least squares method, according to the difference values between calculated ground stress data and measured ones. The results show that a plausible ground stress field distribution of Bohai Sea and its adjacent area can be obtained with less data by the optimization inversion method. When there are less measuring points, the optimization inversion result can be easily affected by the distribution of measuring points and the distance of each measuring point to the model boundary; when there are more measuring points, the inversion errors at the checkpoints can be obviously reduced and a more reasonable integrated inversion result can be obtained.
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  Cite this Reference:
Zongxiang Xiu, Baohua Liu, Qiuhong Xie, Guozhong Han, Yanpeng Zheng and Xishuang Li , 2013. Optimization Inversion of the Ground Stress Field of Bohai Sea and Its Adjacent Area.  Research Journal of Applied Sciences, Engineering and Technology, 6(21): 4103-4109.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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