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http://dx.doi.org/10.9711/KTAJ.2020.22.1.001

Study on optimal design method for estimation of the mechanical properties of abandoned mine ground  

Son, Min (Dept. of Railway Construction and Safety Engineering, Dongyang University)
Moon, HyunKoo (Dept. of Earth Resources and Environmental Engineering, Hanyang University)
Jung, HyukSang (Dept. of Railway Construction and Safety Engineering, Dongyang University)
Kim, YoungSu (The Construction Management (CM) Division, Engineering Consultants Corp.)
Park, SungHyun (Division of Rail track Design Engineering & Maintenance, Seohyun Engineering Co., Ltd.)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.22, no.1, 2020 , pp. 1-21 More about this Journal
Abstract
The domestic abandoned mines are generating subsidence and it is difficult to predict this subsidence and evaluate the risk. The study of the subsidence risk evaluation using the existing numerical analysis only applies the integrative property to the geological structure and ground condition, and analyzes the goaf peripheral plastic domain. Also, there is a realistic limit that only restricted materials can be apprehended in securing the input information, which leads to the low reliability of the numerical analysis result. In this study, 2-dimensional modeling was performed by applying the field geological structure and ground information targeting abandoned mine where the subsidence occurred. Also, the analysis model was revised by repeating the numerical analysis for the difference between the real subsidence ground information and the analysis result to be minimized by modifying the ground property. This revision was automated by applying the optimization technique and the gradational optimal design method dividing multiple ground properties was developed.
Keywords
Abandoned mine; Subsidence; Numerical analysis; Optimization technique; Ground properties;
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