Rock mass yielding in the Aspo Pillar Stability Experiment

被引：0
|
作者：
Andersson, J. C. [1 ]
Christiansson, R. [1 ]
Martin, C. D.
机构：
[1] Swedish Nucl Fuel & Waste Management Co, Figeholm, Sweden
来源：
ROCK MECHANICS: MEETING SOCIETY'S CHALLENGES AND DEMANDS, VOLS 1 AND 2: VOL: FUNDAMENTALS, NEW TECHNOLOGIES & NEW IDEAS; VOL 2: CASE HISTORIES | 2007年
关键词：
D O I：
10.1201/NOE0415444019-c150
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The Swedish Nuclear Fuel and Waste Management Co. has carried out the Aspo Pillar Stability Experiment at the 450-m-level of the Aspo Hard Rock Laboratory. The rock mass that was studied was a 1-m-wide pillar between two 1.8-m-diameter cylindrical boreholes. The stresses in the pillar were controlled by the geometry of the experiment drift, the spacing between the boreholes and heating of the surrounding rock. A large scale rock mass strength test was done at the end of the experiment. It was found that the observed fracturing was extensional in nature, that small confining pressure has a large impact on the fracture initiation and that the Mohr-Coulomb failure criteria gave the best estimate of the rock mass strength.
引用
收藏
页码：1213 / 1220
页数：8
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