Fuzzy logic model for stability assessment of underground facilities

• Main Authors: Crnogorac Luka, Tokalić Rade, Gutić Kemal, Jovanović Saša, Đukanović Duško
• Format: Article
• Language: English
• Published: Faculty of Mining and Geology, Belgrade 2020-01-01
• Series: Podzemni Radovi
• Subjects: underground construction; stability assessment; fuzzy logic
• Online Access: https://scindeks-clanci.ceon.rs/data/pdf/0354-2904/2020/0354-29042036029C.pdf

A proper assessment of the stability leads to proactive decision making for the method of construction, the shape and size of the cross-section of the facility and the adequate support. The stability is directly dependent on the physical, mechanical and technical characteristics of the rock mass. The traditional assessment-based approach and the classification of stability of underground facilities is based on both experience and experiments with previously constructed facilities. To ease the process for the early phase of design, there was a need for the development of a mathematical model for assessment of the stability. Ambiguity in mining engineering, directs the development of the model using a fuzzy logic system and fuzzy "if-then" rules. The model was developed based on very scarce input data that is most often the only data available during the design stage. Fuzzy model results have shown, through the random selection of input data in the model, that in 70% of cases, there is high numerical congruence with the traditional method for determination of coefficient of stability S; and in 90% of cases, there is also congruence in accordance with the traditional approach to the classification of underground facilities based on the stability assessment.