Modelling and Analysis of the Excavation Phase by the Theory of Blocks Method of Tunnel 4 Kherrata Gorge, Algeria

[摘要] The aim of our work is to check the stability during excavation tunnel work in the rock mass of Kherrata, connecting the cities of Bejaia to Setif. The characterization methods through the Q system (method of Barton), RMR (Bieniawski classification) allowed us to conclude that the quality of rock mass is average in limestone, and poor in fractured limestone. Then modelling of excavation phase using the theory of blocks method (Software UNWEDGE) with the parameters from the recommendations of classification allowed us to check stability and to finally conclude that the use of geomechanical classification and the theory of blocks can be considered reliable in preliminary design.

[发布机构] University of Bejaia Route Targua Ouzemmour, Bejaia; 6000, Algeria^1;University of Tebessa Route de Constantine, Tebessa; 12002, Algeria^2

[关键词] Algeria;Characterization methods;During excavations;Geomechanical classification;Modelling and analysis;Preliminary design;Rock mass