Research on Method for the Weight Definition of Evaluation Indicator in Dump Landslides Based on Rough Set

Abstract:

To combine expert scoring and rough set two kinds of subjective and objective methods, avoiding the indicator weight value is zero, making the expert scoring more efficient, objective. Using the expert scoring method based on rough sets in determining evaluation indicator weights of open-pit dump landslide. Slope density, cohesion, internal friction angle, slope angle, slope height, pore pressure ratio were selected for evaluation indicators of dump landslide. First of all, according to the landslide data collected, to calculate the importance sort of evaluation indicators of the dump landslide based on rough set theory. Then, scores of each indicator corresponds to a certain interval, five relevant experts were selected for scoring. Finally, the weight of each indicator was determined based on the average score. We can know from results, slope angle has the biggest influence on the dump landslide, followed by pore pressure ratio .Slope height and slope density have the minimal impact, which is coincidence with the actual situation of the dump, it shows that the method is more rational and effective .

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 2600-2606
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.2600
• Online since: July 2014
• Authors: Ting Ting Luan*, Zhen Hua Xie, Sha Sha Liang
• Keywords: Dump Landslide, Expert Scoring, Rough Set (RS), Weight Calculation

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