True triaxial loading apparatus and its application to coal outburst prediction

True triaxial loading apparatus and its application to coal outburst prediction

Two generations of true triaxial loading (TTAL) apparatuses are presented. First generation apparatuses were intended primarily for true stress state imitation in rock or mineral specimens. Advanced second-generation installations are designed to provide precise measurements in any stress and simula...

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Bibliographic Details
Published in:International journal of coal geology Vol. 58; no. 4; pp. 245 - 250
Main Authors: Alexeev, A.D, Revva, V.N, Alyshev, N.A, Zhitlyonok, D.M
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 23-06-2004
Elsevier
Subjects:
Coal
Earth sciences
Earth, ocean, space
Exact sciences and technology
Outbursts
Rock mass
Sedimentary rocks
Simulation
Stress state
True triaxial loading
True triaxial loading
Stress state
Outbursts
Simulation
Rock mass
Coal
experimental studies
carbonaceous rocks
stress
triaxial tests
digital simulation
loading
high pressure
sedimentary rocks
prediction
coal
fractures
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Summary:Two generations of true triaxial loading (TTAL) apparatuses are presented. First generation apparatuses were intended primarily for true stress state imitation in rock or mineral specimens. Advanced second-generation installations are designed to provide precise measurements in any stress and simulation of rock outburst at sudden relief of one sample face. Both TTAL apparatuses can apply pressure up to 250 MPa corresponding to earth depth about 10,000 m independently along each of three axes. Experimental results are given on effect of absorbed water on ultimate state in coal as well as adsorbed methane influence on simulated coal outbursts.
ISSN:0166-5162
1872-7840
DOI:10.1016/j.coal.2003.09.007