Relationship between point load strength and uniaxial compressive strength of hydrothermally altered soft rocks

被引：0

作者：

Kohno, M. ^{[1
]}

Maeda, H. ^{[2
]}

机构：

[1] Natl Univ Corp, Kitami Inst Technol, Cold Reg Environm & Energy Engn Course, Grad Sch Engn, Kitami, Hokkaido, Japan

[2] Natl Univ Corp, Kitami Inst Technol, Dept Civil & Environm Engn, Fac Engn, Kitami, Hokkaido, Japan

来源：

HARMONISING ROCK ENGINEERING AND THE ENVIRONMENT | 2012年

关键词：

weak rock; rock properties; rock failure; rock mass; lab testing; field measurements;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

We clarified relationships between point load strength (PLS) and uniaxial compressive strength (UCS) in hydrothermally altered soft rocks found in northeastern Hokkaido, Japan, using axial and irregular lump PLS test specimens. The numbers of specimens tested were 1,755 and 2,123 rock specimens for the axial and irregular lump PLS tests, respectively, and 329 rock specimens for the UCS test. The rock specimens underwent PLS and UCS tests using a laboratory testing machine with specimens in forced-dry and forced-wet states. The correlations between the PLS and the UCS were linear. The UCS was 11.1 times larger than the axial PLS, and 4.7 times larger than the irregular lump PLS, respectively, in soft rocks with a UCS below 25MPa. We could calculate the UCS from PLS tests on soft rocks only when their UCSs were below 25MPa.

引用

页码：675 / 679

页数：5

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