The Perfect Ménard Pressuremeter Curve

• Autorzy: Tarnawski M.
• Języki publikacji: EN

Abstrakty

EN

As it is commonly known, to obtain a good quality Ménard Pressuremeter Test a perfectly drilled borehole (pocket) is required. It should be of proper size, only slightly greater than the diameter of the pressuremeter probe, and its walls should remain undisturbed. Unsatisfactory shapes of pressuremeter curves result usually from a poor quality drilling. Typical examples of such curves are given in all handbooks dealing with pressuremeters. They correspond to situations when the tested cavity is too large, too mall or its walls are collapsed. There is, however, plenty of room between the pressure and volume axes. An infinite number of various curves can run through this field and only one of them is really the proper one. An interpreter should be able to evaluate the quality of any curve obtained, estimate the source, the direction and the approximate scale of error and finally to draw conclusions on how to improve the drilling technique to avoid or minimize any future errors. To be able to do that, one needs to understand how the perfect curve should look. The present paper is a study on shapes of pressuremeter curves based on the author's 25years' experience.

Słowa kluczowe

EN

Ménard Pressuremeter; test curve; pressuremeter modulus general scheme implicit in time; finite volume method; extreme flows

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2004
• Tom: Vol. 51, nr 4
• Strony: 387--402
• Opis fizyczny: Bibliogr. 10 poz., il., tab.

Twórcy

autor

Tarnawski M.

• Geoprojekt Szczecin' Ltd. ul. Tartaczna 9, 70-893 Szczecin, Poland,

Bibliografia

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• Tarnawski M. (1998), Doświadczenia “Geoprojektu Szczecin” w Stosowaniu Presjometru w Badaniach Inżyniersko-Geologicznych (The Experience of “Geoprojekt Szczecin” in the Use of Pressuremeter in Geological – Engineering Investigations), Współczesne Problemy Geologii Inżynierskiej w Polsce, II Ogólnopolskie Seminarium (Contemporary Problems of Engineering Geology in Poland, 2nd all-Polish Seminar), Kiekrz near Poznan, Poland, 97–105 (in Polish).
• Tarnawski M. (2003), Shapes of Ménard Pressuremeter Curves, Proceedings of the 13th Regional
• African Conference of Soil Mechanics and Geotechnical Engineering: “The Involvement of Geotechnical Engineering in Infrastructure Development in Africa” Marrakech, Morocco, December 8–11, 183–190.