Stability Evaluation of Bener Dam Diversion Tunnel During Construction
نویسندگان
چکیده
Abstract Bener Dam Diversion Tunnel is located in two rock units such as andesite and breccia. Based on the engineering geology investigation, subsurface tunnel will penetrate breccia with good mass quality (fresh-moderately weathered), while surrounding consist of breccias moderate poor quality. Geological conditions are used basis for stability analysis excavation methods determining primary support systems. Strength Index parameters. The openings supports was carried out using an empirical numerical method approach. results system were then evaluated finite element method. most suitable applied by blasting. Evaluation based rating modeling shows that lowest safety score geomechanical zone 2 a factor value at final 1.786, however general they condition which safe from initial until installation stage.
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ژورنال
عنوان ژورنال: IOP conference series
سال: 2022
ISSN: ['1757-899X', '1757-8981']
DOI: https://doi.org/10.1088/1755-1315/1098/1/012017