Scale effects in rock strength properties. Part 2. Point load test and point load strength index

被引：0
|
作者：
Thuro, K [1 ]
Plinninger, RJ [1 ]
机构：
[1] Swiss Fed Inst Technol, Engn Geol ETH, Zurich, Switzerland
来源：
ROCK MECHANICS: A CHALLENGE FOR SOCIETY | 2001年
关键词：
D O I：
暂无
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
In rock mechanics and engineering geology, the point load test is regarded as a valuable field test to give an estimate of the unconfined compressive strength. Well known is the scale effect concerning the point load strength since the first comprehensive paper by Broch & Franklin (1972). After carrying out a large high number of point load tests in different rock types and with different devices, the result of this contribution is more an examination of evaluation methods of this apparently simple rock test. Since the I, is highly dependent on the sample size, determination of the Iso seems still to be the major problem. In this paper, a size correction method for obtaining point load strength index Iso is presented using logarithmic regression analysis from a series of performed tests.
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收藏
页码：175 / 180
页数：6
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