Effect of orientation of fracture zone on tunnel behavior during construction using model test

This paper presents the results of reduced scale model tests on the effect of fault zone characteristics on the tunnel deformation behavior. A series of model tests were carried out on deep tunnels considering different fault zone orientations and offset distance. The tunnelling process was simulated in the model tests using compressed air technique. During the tests, the tunnel and ground deformation were mainly monitored while reducing the pressure inside the tunnel and the relationship between the pressure level and the tunnel deformation were established. The results indicate that for a given offset distance the tunnel behavior is influenced the most when the fault zone dips vertically while smallest influence occurs when the fault zone dips 45 degrees.

keywords: 터널, 파쇄대, 축소모형실험, 발파 굴착 터널, 굴착, Tunnel, Fracture zone, Reduced-scale model test, Drill and blast tunnel, Excavation

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Article Contents

Vol.17 No.3

Effect of orientation of fracture zone on tunnel behavior during construction using model test

Abstract

Reference

(사)한국터널지하공간학회