STUDIES ON CRACK PROPAGATION RESISTANCE OF ROCKS BASED ON HYDROFRAC DATA OF LARGE SPECIMENS.

H. Abe, Kazuo Hayashi, T. Hashida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The crack propagation resistance of rock, which depends significantly on the specimen size, was determined by analyzing results of the hydraulic fracturing experiments using the 10 m sized granite specimen at a quarry in Fukushima Prefecture, Japan. The method of analysis was the modified BEM, where the crack was assumed to be expanding as a semi-elliptical crack such that the stress intensity factor was approximately constant along its periphery. It was found that the fracture toughness of the granite being independent of crack size is 1. 93 MPa multiplied by (times) m parallel .

Original languageEnglish
Title of host publicationUnknown Host Publication Title
EditorsSurendra P. Shah, Stuart E. Swartz
PublisherSoc for Experimental Mechanics Inc
Pages572-579
Number of pages8
ISBN (Print)0912053135
Publication statusPublished - 1987 Dec 1

ASJC Scopus subject areas

  • Engineering(all)

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