Stability Evaluation of Rock-soil Slope Based on D-S Evidence Theory and Normal Degree of Membership
Received date: 2017-07-15
Revised date: 2018-03-04
Online published: 2019-01-24
In order to effectively solve the problems of vagueness and uncertainty,and the conflict between the evaluation indexes existing in the process of rock-soil stability evaluation,a new approach of comprehensive evaluation on rock-soil stability was proposed based on D-S theory of evidence.Firstly,the recognition framework was established,the evaluation indexes were selected,and the basic probability distribution of levels was determined by using the Gaussian membership function.Secondly,the index weight was determined based on the range of basic probability distribution and the mutual influence between indexes and grades.Finally,the stability of rock-soil slope was determined by using the combination rules of D-S evidence theory.Through comparison with the extension method in the basic probability distribution and relevancy of indexes,determination of weight and the revaluation result,D-S evidence theory was used in the workplace of a rare earth mine in Guangzhou.And the results show that the evaluation model of D-S evidence theory is more suitable and more practical,and with higher accuracy.
Jinguo XU , Xingguo DAI , Zezheng YAN . Stability Evaluation of Rock-soil Slope Based on D-S Evidence Theory and Normal Degree of Membership[J]. Gold Science and Technology, 2018 , 26(6) : 780 -787 . DOI: 10.11872/j.issn.1005-2518.2018.12.780
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