Method For Direct Shear Test On a Rock Disocntinui

method acting for direct overcharge test on a gem and roll disocntinuity 1 Scope This tired specifies the laboratory test mode to determine the engineering (strength) properties of a rock joint (discontinuity), such(prenominal) as observed in slopes, foundations, tunnels and ohmic resistance cavities. The test method is for a direct cut posterior test using a gazump box set forth below, and it differs from that found in JGS 3511-2004 method acting for In-situ govern clip study on Rocks, which is conducted in-situ. 2 Normative book of facts The following referenced article is indispensable for the employment of this method. The newest chance variable of the following document shall apply to this test method. JGS 3821-2006 Method for probe into the geometrical distribution of discontinuities in rock masses 3 Definitions This standard uses the terms defined as follows: 3.1 Discontinuity A gloomy plane in the form of joint, bedding, etc., whic h disturbs the mechanical continuity of rock real, and whose tensile strength is either nil or negligible. 3.2 rudeness geometrical roughness on the surface of a discontinuity. 3.3 Infilling A material that fills the gap created by a discontinuity. 3.4 supreme soak strength Maximum value of dress stress. 3.

5 remainder fleece strength Approximately continual value of shear stress after showing the level best shear strength. 3.6 type Rock material extracted from the boring core or the block sample. It contains a discontinuity that is regarded as a shear plane. 3.7 prototype Sample that is cut to fit into a shear box. 3.8 tip off of ! shear resistance Inclination of Coulombs shiver line on the diagram showing the relationship mingled with the normal and shear stresses. 3.9 Cohesion Intercept of Coulombs rupture line on the diagram illustrating the relation betwixt the normal and shear stresses. 4 Test Apparatus Test apparatus is as follows (Refer to Figure 1): 4.1 Shear Box The shear box contains the specimen and it is divided by the...If you penury to trance a full essay, order it on our website: OrderCustomPaper.com

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