TRIAXIAL UNLOADING TEST OF ROCKS AND ITS IMPLICATION FOR ROCK BURST

dc.contributor.author	Huang R.Q.
dc.contributor.author	Wang X.N.
dc.contributor.author	Chan L.S.
dc.date.accessioned	2021-04-03T02:25:58Z
dc.date.available	2021-04-03T02:25:58Z
dc.date.issued	2001
dc.identifier	https://www.elibrary.ru/item.asp?id=888192
dc.identifier.citation	Bulletin of Engineering Geology and the Environment, 2001, 60, 1, 0037-0041
dc.identifier.issn	1435-9529
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/27233
dc.description.abstract	The behaviour of rock deformation and its failure characteristics under loading and unloading conditions are substantially different. In this paper, triaxial unloading tests have been designed to simulate the unloading process during tunnel excavation in three kinds of rock (granite, migmatitic granite and limestone). The results show that elastic moduli obtained under unloading conditions are generally less than under loading conditions. The strength of the rock samples also decreases with an increasing rate of unloading. This study reveals that rock bursts during tunnelling in a high in-situ stress area could be controlled or reduced by lowering the excavation speed or applying precautionary measures to control the displacement of surrounding rocks.
dc.subject	TRIAXIAL TEST
dc.subject	UNLOADING
dc.subject	ROCK BURST
dc.subject	GRANITE
dc.title	TRIAXIAL UNLOADING TEST OF ROCKS AND ITS IMPLICATION FOR ROCK BURST
dc.type	Статья

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