Method For Direct Shear Test On a Rock Disocntinui

method acting for direct overcharge test on a rock and roll and roll disocntinuity 1 Scope This sample 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 subsurface cavities. The test method is for a direct cut covering fire test using a rob box expound below, and it differs from that found in JGS 3511-2004 method acting for In-situ forthwith clip stress on Rocks, which is conducted in-situ. 2 Normative recognition The following referenced article is indispensable for the employment of this method. The newest recitation of the following document shall apply to this test method. JGS 3821-2006 Method for investigation into the geometrical distribution of discontinuities in rock masses 3 Definitions This standard uses the terms defined as follows: 3.1 Discontinuity A irksome plane in the form of joint, bedding, e tc., which disturbs the mechanical continuity of rock real, and whose tensile strength is either nil or negligible. 3.2 indention geometrical roughness on the surface of a discontinuity. 3.3 Infilling A material that fills the gap created by a discontinuity. 3.4 supreme crop strength Maximum value of rob stress. 3.

5 sleep shear 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 sample Sample that is c ut to fit into a shear box. 3.8 weight of! shear resistance Inclination of Coulombs flick line on the diagram showing the relationship betwixt the normal and shear stresses. 3.9 Cohesion Intercept of Coulombs rupture line on the diagram illustrating the relation amid 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 beguile a full essay, order it on our website: OrderCustomPaper.com

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