Identyfikatory
Warianty tytułu
Assessment of Flysch sandstones’ strength at various loading paths in conditions of conventional triaxial compression
Języki publikacji
Abstrakty
The paper presents an assessment of Flysch sandstones’ strength at various loading paths in conditions of conventional triaxial compression tests. Three types of tests were conducted: single triaxial failure tests at three various confining pressures, multiple failure tests and continuous failure tests. Much attention was given to a tests’ methodics, the courses of multiple failure tests and the most rare continuous failure tests were described. The highest values of Krosno sandstones strength was observed at the load path up to 90 MPa corresponding with single triaxial failure tests. Samples exposed to either multiple or continuous failure were subjected to "material fatigue” and their strength values are lower - about 30 MPa. Strength loops obtained from conducted tests also show some differences. The higher values of internal friction angle and lower values of cohesion were obtained for triaxial failure tests than for multiple and continuous failure ones. The conducted tests also gave possibility to compare angle of failure (shear) surface depending on the loading path at condition ofcon- ventional triaxial test.
Czasopismo
Rocznik
Tom
Strony
596--601
Opis fizyczny
Bibliogr. 12 poz., rys, tab., wykr.
Twórcy
autor
- Zakład Geomechaniki, Uniwersytet Warszawski, ul. Żwirki i Wigury 93, 02-089 Warszawa
Bibliografia
- 1. GRAMBERG J. 1989 - A Non-Conventional View on Rock Mechanics and Fracture Mechanics. Balkema, Rotterdam.
- 2. GUSTKIEWICZ J. 1989 - Synoptic view of mechanical behaviour of rocks under triaxial compression. [In:] Rock at Great Depth, Maury & Frourmaintraux. Balkema, Rotterdam: 3-10.
- 3. GUSTKIEWICZ J. (red.) 1999 - Właściwości fizyczne wybranych skał karbońskich Górnośląskiego Zagłębia Węglowego. Skały warstw siodłowych. IGSMiE PAN, Kraków.
- 4. KOVARI K., TISAA., EINSTEIN H.H. & FRANKLIN J.A. 1983 - Suggested Methods for Determining the Strength of Rock Materials in Triaxial Compression: Revised Version. Inter. Jour. Rock Mech. Min. Sc. & Geomech. Abstracts, 20: 285-290.
- 5. KOVARI K. & TISE A. 1975 - Multiple Failure State Test and Strain Controlled Triaxial Test. Rock Mechanics, 7: 17-33.
- 6. KWAŚNIEWSKI M. 2002 -Zachowanie się skał izo-i anizotropowych w warunkach trójosiowego ściskania. Zesz. Nauk. Politech. Śląskiej, Górnictwo, 247: 1-407.
- 7. LI H.B., ZHAO J. & LI T.J. 1999 - Triaxial compression tests on a granite at different strain rates and confining pressures. Inter. Jour. Rock Mech. and Mining Sc., 36: 1057-1063.
- 8. ŁUKASZEWSKI P. 2004 - Strukturalne uwarunkowania wytrzymałości piaskowców krośnieńskich z Mucharza poddanych wysokim ciśnieniom. Geotechnika i Budownictwo Spec., 2004. XXVII ZSMG. Zakopane. T.1: 151-160.
- 9. MASTELLA L. & ZUCHIEWICZ W. 2000 - Jointing in the Dukla Nappe (Outer Carpathians, Poland): an attempt at palaeostress reconstruction. Geol. Quart., 44: 377-390.
- 10. NOWAKOWSKI A. 1994 - Trzy testy trójosiowego ściskania - sposób wykonania, zalety, wady i ewentualne możliwości wykorzystania wyników. Pr. Nauk. Inst. Geotech. Hydrotech. Politech. Wrocł., 65: 155-161.
- 11. POPRAWA D. & NEMCOK J. 1988-1989 - Geological Atlas of the Western Outer Carpathians and their Foreland. Państw. Inst. Geol.
- 12. REIK G. & ZACAS N. 1978 - Strength and deformation characteristics of jointed media in true triaxial compression. Intern. Jour. Rock Mech. Min. Sc. & Geomech. Abstracts, 15: 295-303.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-0859c833-acc2-4b88-aec4-e9fe30992491