1-20 of 811
Keywords: rock mass
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1923
... ABSTRACT: In the present study, we studied the displacement around the tunnel in a transversely isotropic rock mass with the scenario of tunneling direction parallel to joint strike. The effect of dip angle in tunneling on the displacement distribution around the tunnel was simulated...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1228
... of "small at both ends and large in the middle" with a dense emission signal in the direction of crack propagation on the outside of the borehole. 1. Introduction As the basic unit of mine, rock mass presents different evolutionary characteristics with coal mining (Cai MF, He MC, Liu YD, 2002...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1286
... injection flow rate closed-loop horizontal well rock mass horizontal well boundary well length reservoir surveillance conductive heat transfer diameter heat transfer higher outlet fluid temperature waterloo geothermal system ARMA 21 1286 Heat production from hot dry rocks using closed-loop...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1310
... upstream oil & gas mechanism rock stress stress field rock engineering cornet reservoir geomechanics structural geology rock mechanics stress determination rock mass françois international symposium injection fracture ARMA 21-1310 Remembering François H. Cornet s contribution...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1799
... ABSTRACT: This study combines novel and previously published data to create a new method of estimating anisotropic rock-mass strength in three dimensions that considers both the orientation and the non-persistence of multiple joint sets. Equations are developed to evaluate joint persistence...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1815
... ABSTRACT: This paper focuses on a numerical study using the universal distinct element, to investigate settlement behavior of two strip footings with close spacing resting on a rock mass obeying the modified Hoek–Brown failure criterion. The perfectly rough strip footings are considered...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1850
... of fractures re-opening and closing. This method can be used for multi-depth measurement as long as there is a measurable section in the borehole, and it can be applied to large depths. Another feature of this method is that it does not require physical properties such as Young's modulus of the rock mass...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1180
..., verifiable, and reproduceable method to assess rock mass quality & behaviour. Bias in rock mass characterisation and engineering judgement involved in design process therefore can be avoided. This paper demonstrates benefits gained from DFN approach in ground support design for large span rock caverns...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1576
... relaxation by means of Factor D, proposing a geometry in which the strength properties of the rock mass are seen to be affected, which could determine a stable or unstable condition of slope. A finite element model was created to represent the stress relaxation effect for different qualities of rock mass...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1836
... with standard finite element method is a highly computationally expensive technique, which involves the remeshing of the fracture domain after every time increment. This paper adopts the XFEM technique to study the effects of rock stiffness on the behaviour of fracture propagation in a saturated rocks mass...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2014
... ABSTRACT: Rock scour evaluation procedures consider both the erosion capacity of flowing water and the resistance offered by the rock mass. The Block Scour Spectrum (BSS) provides a framework for assessing the rock mass resistance according to details of the discontinuity structure. This study...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1790
... larger than typical core sizes, making useful laboratory testing impossible. Numerical modeling using a Synthetic Rock Mass (SRM) approach is one way to estimate mechanical and hydraulic properties at scales of engineering interest (e.g., open pit slopes). The SRM approach was initially developed...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1148
... ABSTRACT: The paper presents an analytical study of hydraulic conductivity of natural shear fractures existing rock masses surrounding an inclined well. The concept of critically stressed fractures is used to analyze hydraulic conductivity. With this concept and previous theoretical studies...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1304
... of surrounding talus-like ground. To better understand the tunnel-induced ground response and the interaction between the surrounding rock mass and tunnel structure, a comprehensive in-situ monitoring program was set up. The in-situ monitoring contents included the pressure on primary lining from surrounding...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1382
... value tunnel rock mass rock zhiwei chen department ARMA 21 1382 Seismic Analysis of a Deep Buried Underground Storage Cavern with Large Span in Rock Zhiwei CHEN Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China Haitao YU* Key Laboratory of Geotechnical...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1134
... Abstract Structural defects are inherent in almost every rock mass. In many cases, non-persistent cracks may coalesce into continuous fractures under dynamic loads, potentially affecting the stability of a rock structure. The study of the dynamic behavior of rock and concrete discontinuities...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1577
... ABSTRACT: Rock mass Pre-conditioning techniques (PC), commonly used in the mining industry, can be applied in either massive scale, in order to alter a major volume of rock, or locally, changing rock mass properties of a tunnel surroundings, as it was applied in New Mine Level infrastructure...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-0009
... ABSTRACT: The bearing capacity of a rock foundation is a function of the rock mass properties as assessed in the field, and the strength and deformation characteristics of intact rock determined in the laboratory. The inherent variability of the rock at the mass and laboratory scales...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-0012
... of kinematic models using the kinematic quantities does not need to involve the rock stiffness or constitutive relations. It is well known that the constitutive relations for rock mass is very hard to obtain even for a simple linear problem and is even more difficult to define nonlinear relations in blasting...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-0017
... ABSTRACT: As shallower deposits in many mining jurisdictions are depleted, it is becoming more common to mine in deeper and more challenging ground conditions. This paper provides a discussion of empirical support design methods using the following rock mass classifications: Barton's Q System...

Product(s) added to cart

Close Modal