The Geological Strength Index (GSI) system, proposed in 1994 by Evert Hoek, is used for the estimation of the rock mass strength and the rock mass deformation modulus.
The GSI system concentrates on the description of two factors, rock structure and block surface conditions. The guidelines given by the GSI system are for the estimation of the peak strength parameters of jointed rock masses. There are no guidelines given by the GSI, or by any other system, for the estimation of the rock mass’ residual strength that yield consistent results.[1]
Another method is that defined in the work of Cole & Stroud whereby the basic strength, in Newtons, and the shear strength in Kg/cm2, can be estimated empirically by varied responses to hammer, knife & finger nail.[2]
The GeologicalStrengthIndex (GSI) system, proposed in 1994 by Evert Hoek, is used for the estimation of the rock mass strength and the rock mass deformation...
Wiktionary, the free dictionary. GSI may refer to: GeologicalStrengthIndex Gonadosomatic Index UK Government Secure Intranet Grid Security Infrastructure...
Comparison between Mohs hardness and Vickers hardness: Brinell scale GeologicalStrengthIndex Hardnesses of the elements (data page) Knoop hardness test Meyer...
rock mass Rock Mass Rating (RMR) Q-system GeologicalStrengthIndex Mining rock mass rating (MRMR) Size Strength classification Slope Mass Rating (SMR),...
mechanics". Hoek, E. (1994) "Strengths of rock and rock masses" ISRM News Journal, 2(2): 4–16. Introduced the GeologicalStrengthIndex. Darcy, Henry (1856)....
used in the geological sciences as a data acquisition method complementary to field observation, because it allows mapping of geological characteristics...
The volcanic explosivity index (VEI) is a relative measure of the explosiveness of volcanic eruptions. It was devised by Christopher G. Newhall of the...
stratigraphic units within terranes of rock or geological regions. This branch of structural geology deals mainly with the orientation, deformation and...
BC). Some of the first geological thoughts were about the origin of the Earth. Ancient Greece developed some primary geological concepts concerning the...
14 megapascals (2,000 psi). This is still much greater than the tensile strength of granite, which is about 4 megapascals (580 psi). This makes frost wedging...
extracted from tantalite is used in alloys for strength and higher melting points, in glass to increase the index of refraction, and in surgical steel, as it...
strength as modern Portland-cement concrete (c. 200 kg/cm2 [20 MPa; 2,800 psi]). However, due to the absence of reinforcement, its tensile strength was...
limit is quite stiff, having an undrained shear strength of the order of about 200 kPa. The Plasticity Index of a particular soil specimen is defined as the...
diverging (and new lithosphere is being created). During the development of geological theory, certain concepts that allowed the grouping of volcanoes in time...
Global Slavery Index 2016". The Global Slavery Index. Retrieved 20 November 2017. Humanity, Vision of. "Vision of Humanity – Global Peace Index and Positive...
The country is characterized by a wide range of both meteorologic and geological regions. It is a sparsely inhabited country of 40 million people, the...
on December 4, 2012. Retrieved March 12, 2012. U.S. Geological Survey. "United States Geological Survey Topographic Maps: Fall River Pass, Colorado quad"...
measured along different axes, e.g. absorbance, refractive index, conductivity, and tensile strength. An example of anisotropy is light coming through a polarizer...
2019. Zhang J.; Wang L.; Weidner D.J.; Uchida T.; et al. (2002). "The strength of moissanite" (PDF). American Mineralogist. 87 (7): 1005–1008. Bibcode:2002AmMin...
Scientific and Regulatory Basis for Geological Disposal of Nuclear Waste. New York: J. Wiley & Sons. pp. See "Overpack" in index. Retrieved 1 February 2016. "Harmonica...
feet in 24 hours, it is the fastest growing plant; bamboo has a tensile strength twice as much as timber; hospitals in China worked with herbal remedies;...
displaying short descriptions of redirect targets Geological history of Earth – The sequence of major geological events in Earth's past Geodynamics – Study of...
Global Information