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Keywords: roughness
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Proceedings Papers
The Adherence Of Clay To Steel Surfaces
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-598
.... The adherence behaviour of clay was investigated by measuring the shear stress required to shear the clay over a steel surface in a direct shearbox. Results show a great influence of the steel roughness, contact time and mineral type. This is in accordance with practical experience and previous literature...
Proceedings Papers
Practical Considerations In The Use Of Rock Mass Classification In Mining
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-577
... purposes. There has been a tendency to also use the resulting empirical ratings to determine the constitutive laws as well as failure criteria now employed with the majority of numerical models. metals & mining roughness assessment milne strength rock mass classification system block size...
Proceedings Papers
Limit Analysis Solutions For The Pullout Capacity Of Anchors In Sand
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-193
... element analysis was used incorporating a soil structure interaction theory at the soil/anchor boundary. Numerical analysis and laboratory testing will be performed on anchors in both clay and sand. roughness pullout capacity horizontal anchor vertical anchor Upstream Oil & Gas soil...
Proceedings Papers
Characterisation Of Size, Shape And Texture Of Aggregates By Fourier Analysis Of 3-D-Laser Images
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-217
... ABSTRACT: A new method for analysis of size, shape and roughness of aggregates based on a 3-D-laser-digitising technique is presented. Measurements of aggregate particles are carried out by a system consisting of a laser sensor and a co-ordinate-measuring machine; the accuracy of the system...
Proceedings Papers
Skin Friction For Piles Socketed In Hard Rock
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-365
... that this parameter is more appropriate for pile design in hard Irish rocks. The Rocket '97 approach, which uses basic rock and pile parameters and allows for the effects of roughness along the pile shaft, is shown to give encouraging results for Irish conditions. INTRODUCTION The recent period of sustained...
Proceedings Papers
Stabilisation Of Retaining Walls With Non-Grouted Soil Nails
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-355
... roughness grain diameter borehole wall stabilisation Upstream Oil & Gas Soil Nail pullout test recommendation pullout force Wehr calculation diameter sand anchor granular material mean grain diameter cylinder application installation gravel STABILISATION OF RETAINING...
Proceedings Papers
Shear Strength Equation For Rock Joints, Based On 3-D Surface Characterization
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-475
... resistance of a rock mass both along any desired plane of potential shear and along the weakest discontinuity are essential. To quantify the influence of the rock material and of the roughness on the strength of joints, various researchers have proposed different equations and correlations to estimate...
Proceedings Papers
Observation And Interpretation of Time-dependent Behaviour of Boreholes Stability In the Continental Deep Drilling Pilot Borehole
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Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-177
... variables are borehole roughness, elongation and ellipticity. The time dependence of these parameters was correlated to changes in the circulation. The data shows the successful application in the KTB pilot borehole of increased use of the complex bond-forming viscosifier Dehydrill in the fluid circulation...
Proceedings Papers
Shear-wave Birefringence And Directional Permeability In Fractured Rock
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Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-034
... polarizations of shear waves. Upstream Oil & Gas crack density Crampin Hudson attenuation wave velocity shear wave shear-wave birefringence axial stress King directional permeability logarithm Reservoir Characterization roughness variation anisotropy perpendicular fracture...