›› 2009, Vol. 30 ›› Issue (9): 2686-2690.

• Geotechnical Engineering • Previous Articles     Next Articles

Application of method for weight calculation based on optimization technique to evaluate rock mass quality

XIAO Yun-hua, WANG Qing, CHEN Jian-ping   

  1. College of Construction Engineering, Jilin University, Changchun 130026, China
  • Received:2008-03-07 Online:2009-09-10 Published:2010-03-24

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Abstract:

Based on fuzzy mathematics and extension theory of rock mass quality evaluation, the weight is the key to the identification. At present, despite there are many ways to determine the weights, it is not very convenient for the actual projects. By introducing the extension theory of hierarchy eigenvalue, the weight calculation will be solved by conversing it into the optimization problem; it is a new meaningful exploration. Combining chaos optimization algorithm and extension evaluation method, the sample data are back analyzed and the weight is obtained. Choosing influential index according to the actual situation, the evaluation criteria are established; sample data are extracted, and the data are analyzed by using CAExWeigh.exe. The calculation results are analyzed based on actual engineering geological conditions. It is shown that the method is reliable; meanwhile, the weight factor is the mean value of the impact on the statistical significance to some extent; it’s meaningful only when its index value is in a certain range.

Key words: weight, chaos, chaos optimization algorithm, extension, rock mass quality

CLC Number: 

  • O 159
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