SPECIMEN SIZE REQUIREMENTS FOR DETERMINING THE INHERENT FRACTURE-TOUGHNESS OF ROCKS ACCORDING TO THE ISRM SUGGESTED METHODS

被引：30

作者：

MATSUKI, K ^{[1
]}

HASIBUAN, SS ^{[1
]}

TAKAHASHI, H ^{[1
]}

机构：

[1] TOHOKU UNIV, FAC ENGN, FRACTURE TECHNOL RES INST, AOBA KU, SENDAI, MIYAGI 980, JAPAN

来源：

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES | 1991年 / 28卷 / 05期

关键词：

D O I：

10.1016/0148-9062(91)90075-W

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

In order to clarify the specimen size requirements for determining the inherent fracture toughness of rocks according to the Suggested Methods proposed by ISRM, short rod testing has been carried out for eight rocks. The K-resistance curve was evaluated for these rocks as well as for three rocks from a previous study. From the results, the specification of the specimen size requirements in order to determine the inherent fracture toughness of rocks is proposed in terms of the critical crack extension at which the corrected (level II) fracture toughness reaches a constant value.

引用

页码：365 / 374

页数：10

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