2024-03-29T12:22:50Z
https://repository.dl.itc.u-tokyo.ac.jp/oai
oai:repository.dl.itc.u-tokyo.ac.jp:00033671
2022-12-19T04:09:07Z
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25. 高封圧下の岩石の変形・破壊 : (第1報)乾いた試料の圧縮試験
25. Deformation and Fracture of Rocks under Confining Pressure(1) : Compression Tests on Dry Rock Sample
MOGI, Kiyoo
131530
453
application/pdf
Experimental study of the mechanical properties of rocks underhigh pressure and temperature is very helpful for making clearthe mechanical behavior of the earth's crust and various phenomenaoriginating from the earth's crust. Although much experimentalwork has been made, available data is still insufficient for a generaldiscussion of the behavior of the various rocks from the geophysical point of view. In this series of experimental work, the effect ofconfining pressure on the deformation and fracture of different types of rocks are systematically investigated. In this paper, the results of triaxial compression tests on twelve dry rocks, including diorite, granite, andesite, trachyte, tuff, sandstone and marble, are described. The confining pressure ranges from 1 to 1500 atmospheres. The stress-strain curves and curves for the breaking or yielding strength and the degree of the strain hardening as functions of confining pressure are given for each rock. The compact igneous rocks are very brittle and their breaking strength increases with the confining pressure. The sedimentary rocks and the porous igneous rocks become remarkably ductile under the moderate confining pressure. The extremely porous rocks behave as clastic materials under the influence of pressure.
地殻やマントルの力学的性質や地震の発生機構などの研究のために,地下深所に相当する高圧,高温のもとでの岩石の力学的諸性質を実験的に研究することが重要であると考えられる.このような立場からすでに多くの実験が行なわれ,いくつかの重要な成果が得られている.しかし,実験結果を実際の地殻の問題に適用するには,これまで研究されできた岩石の種類が比較的限られていて,地殻を構成する各社岩石についての組織的な実験を集積する必要がある.このような立場から,各種主要岩石についての測定をはじめたが,本報告はその序報である.
departmental bulletin paper
東京大学地震研究所
1964-12-25
application/pdf
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo
3
42
491
514
AN00162258
00408972
https://repository.dl.itc.u-tokyo.ac.jp/record/33671/files/ji0423006.pdf
eng