ROCK MASS DEFORMATIONAL BEHAVIORS DURING THE EXCAVATION OF THE LARGE-SCALE NATM CAVERN IN SOFT SEDIMENTARY FORMATION

Autor:	Pornkasem Jongpradist, Tomoyuki Shimura, Hideyuki Horii, Kunifumi Takeuchi
Rok vydání:	2004
Předmět:	Mining engineering Scale (ratio) Geotechnical engineering Sedimentary rock Excavation New Austrian Tunnelling method Rock mass classification Geology
Zdroj:	Doboku Gakkai Ronbunshu. 2004:1-10
ISSN:	1882-7187 0289-7806
DOI:	10.2208/jscej.2004.764_1
Popis:	During excavation of a large-scale water storage tunnel in soft mudstone, rock deformations at the tunnel side wall have unexpectedly increased corresponding to the stepwise bench excavation. The conventional numerical analysis for designing tunnel supports could not predict such behaviors in advance. In this paper, some different numerical analyses for tunnel excavation in soft rock will be employed as the methods that can reasonably represent such rock mass mechanical behaviors. Analyses of large-scale cavern excavation in soft sedimentary rock will be carried out by them and all analysis results will be compared together with the measurement data in order to improve the prediction of tunnel deformational behaviors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bc00443096627f77cd7760b01bec31f8 https://doi.org/10.2208/jscej.2004.764_1 Zobrazit plný text záznamu