Search results
Results from the WOW.Com Content Network
Slope mass rating (SMR) is a rock mass classification scheme developed by Manuel Romana [1] [2] [3] to describe the strength of an individual rock outcrop or slope. The system is founded upon the more widely used RMR scheme, [4] which is modified with quantitative guidelines to the rate the influence of adverse joint orientations (e.g. joints dipping steeply out of the slope).
A rock mass rating system provides a method of incorporating some of the complex mechanics of actual rocks into engineering design. Moreover, the system was the first to enable estimation of rock mass properties, such as the modulus of deformation, in addition to providing tunnel support guidelines and the stand-up time of underground excavations.
The objectives of rock mass classifications are (after Bieniawski 1989): Identify the most significant parameters influencing the behaviour of a rock mass. Divide a particular rock mass formulation into groups of similar behaviour – rock mass classes of varying quality. Provide a basis of understanding the characteristics of each rock mass class
Rock mechanics is a theoretical and applied science of the mechanical behavior of rocks and rock masses. [1] Compared to geology, it is the branch of mechanics concerned with the response of rock and rock masses to the force fields of their physical environment. [1] Grus sand, and the granitoid from which it is derived.
The tilt-angle equals the material friction of the discontinuity wall plus the roughness i-angle (tilt-angle = φ wall material + i) if no real cohesion is present (i.e. no cementing or gluing material between the two blocks), no infill material is present, the asperities do not break, and the walls of the discontinuity are completely fitting at the start of the test, while if the walls of the ...
The two main disciplines of geomechanics are soil mechanics and rock mechanics.Former deals with the soil behaviour from a small scale to a landslide scale. The latter deals with issues in geosciences related to rock mass characterization and rock mass mechanics, such as applied to petroleum, mining and civil engineering problems, such as borehole stability, tunnel design, rock breakage, slope ...
An Oklahoma woman was arrested on Tuesday, Dec. 24 after her baby was allegedly abandoned at a Florida hotel and casino. Rubi Verduzco, 29, was taken into custody on two counts of felony child ...
Pantelidis, L (2009). "Rock slope stability assessment through rock mass classification systems", International Journal of Rock Mechanics and Mining Sciences, 46(2), (315–325). Palmstrom, A.; Broch, E. (2006). "Use and misuse of rock mass classification systems with particular reference to the Q-system". Tunnelling and Underground Space ...