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Development of a Back Analysis Program for Rock Tunnel using FLAC  

양형식 (전남대학교 자원공학과)
전양수 (한국지질자원연구원)
Publication Information
Tunnel and Underground Space / v.12, no.1, 2002 , pp. 37-42 More about this Journal
Abstract
A back analysis algorithm was developed to determine the major parameters for tunnel design; the elastic modulus(E) and the ratio of horizontal to vertical stress(K). The algorithm is based on direct search method and was coded by FISH language of FLAC, a commercial finite difference program. Developed code was applied on some models to verify the validity and estimate the efficiency of the algorithm. Verification by theoretical solutions and published results of Gens' research, was successful.
Keywords
tunnel; back analysis; direct search method; univariate method;
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