Assessment of structural stability in Bohai Sea area based on AHP-GDM model
Assessment of structural stability in Bohai Sea area based on AHP-GDM model
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DOI：
10.1007/s13131-013-0297-1
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发表时间：
2013-04
影响因子：
1.4
通讯作者：
Zongxiang Xiu;Baohua Liu;Qiuhong Xie;Xishuang Li;Chenguang Liu;Y. Pei;Yanpeng Zheng
中科院分区：
文献类型：
--
作者：
Zongxiang Xiu;Baohua Liu;Qiuhong Xie;Xishuang Li;Chenguang Liu;Y. Pei;Yanpeng Zheng
以渤海海域为例，将AHP-GDM模型应用于结构稳定性评价。在该模型中，每个专家的信用度是通过评估矩阵的基础上的相似性和多样性的向量计算。考虑信用度的影响，定量地得到专家组的综合意见。根据渤海地质构造背景，采用非均匀单元法将渤海划分为12个构造稳定性评价区。根据最新的地球物理资料、地震统计资料、断层活动、现今应力场和地壳形变等资料，得出了各带的构造稳定性等级。结果表明，该地区存在1个相对稳定区、3个相对亚稳定区、6个相对亚不稳定区和2个相对不稳定区。非均匀单元法的评估结果与经向0.25°、纬向0.14°的均匀网格法的评估结果非常接近。而非均匀单元法的工作量仅为后者的1/16。与传统的结构稳定性评估方法相比，非均匀单元法与AHP-GDM模型相结合，可以得到更加客观、可靠的评估结果。
The AHP-GDM model is used for the assessment of structural stability, with the Bohai Sea area as an example. In this model, the credit degree of each expert is calculated through the assessment matrix based on the similarity and diversity of vector. The comprehensive opinions of expert panel are quantitatively obtained by considering the effect of credit degree. According to the geological structural setting, the Bohai Sea is divided into twelve assessment zones of structural stability by non-uniform element method. The structural stability grade of each zone is obtained on the basis of the latest geophysical data, earthquake statistical data, and the information of fault activities, current stress field and crustal deformation. The results show that there are one relatively stable area, three relatively sub-stable areas, six relatively sub-unstable areas and two relatively unstable areas. The assessment results of non-uniform element method are very close with those of uniform grid method with size of 0.25° in longitude direction and 0.14° in latitude direction. However the workload of non-uniform element method is only 1/16 of the latter. Compared with traditional assessment methods of structural stability, a more objective and reliable assessment result can be obtained by combining non-uniform element method and AHP-GDM model.