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Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-401
... of the loading conditions and the large deformations observed during the formation of basins, the application of more robust geomechanical models may not be as straightforward as it is in other fields of engineering. Thus, the goal of this paper is to provide a feasibility appraisal of three well-known...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-402
..., it was observed that the numerical models presented a fairly good match to encountered operational problems, providing trust to the applied technique, which indicated that the correlations adopted in the study have a proper application to the geological context of pre-salt carbonates. 1 Introduction Wellbore...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-411
...-destructive method called Digital Image Correlation (DIC) technique. A specially designed PMMA apparatus is developed to allow control confining pressure and pore pressure application on oil sand put inside it. The experimental procedure consists of an image collection process of images obtained with camera...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-419
... of application are ‘from-surface-anddownwards’ bench angle decisions in open pits, and for the numerous slope cuttings needed to reach remote hydropower projects, tunnel, bridge and dam sites, often through strongly varying structural geologies. In rock masses where very few joints and no faults or fault zones...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-426
... very prone to many types of failures, like rockfalls and landslides. The highway sector studied in this paper was already studied by the some of the authors, for the application of RHRS. Here, we present an application of the Q-Slope method on the same slopes. 1 Introduction This work presents...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-433
... application on the section of the BR-471 which traverses the city of Canguçu, as well as provide suggestions of support methods. This study is part of a larger research aimed at analyzing slope stability along BR-471 Highway between the cities of Canguçu and Pelotas - RS. reservoir characterization...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-438
... the movement of soils and rocks, which are mostly related to the occurrence of high intensity rainfall events. wedge serra intersection projection application planar concentration literature stereographic projection orientation foliation reservoir characterization software geological...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-441
... to slope face. Sectors 2 and 3 have steeper slope angles and are prone to wedges. The work has demonstrated that the application of a 3D model generated with SfM-MVS workflow for rock slope stability analysis is feasible and can find future application in climbing sites. 1 Introduction The climbing...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-442
... Abstract The aim of this paper is to present a practical application of Fuzzy Controllers and Artificial Neural Networks (ANN) models to analyze the stability of rock slopes defined by unfilled discontinuities. Results from direct shear tests on different boundary conditions and types...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-445
... Abstract With economical and convenient features, soil-nailing wall is widely used in foundation pit maintain engineering. Due to the poor holdability of drilling holes in sand layer, the application of soil nails is restricted. Apparent cohesive force plays a key role in application of soil...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-360
... as well as the stability results achieved. Based on numerous iterations with two-dimensional LEM, it was found that applying a constant D produced large deep-seated failure with lower than expected FOS for the given geotechnical conditions. As an alternative solution to this application, a half-sigmoid...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-366
... characterization halite artificial intelligence sequence upstream oil & gas reservoir geomechanics lithology drilling operation machine learning application sediment inclination morphology anhydrite knowledge santos basin algorithm figure 6 solubility frequency incidence chaos indicator...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-386
... flow (Jinglong FAN, et al, 2009). upstream oil & gas permeability coefficient journal groundwater detection solid waste management guoping du university application disposal wang borehole three-dimensional sonar xinchang characteristic engineering technology beishan Rock...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-396
... nutrients and solution to be used for the process. However, the actual field application requires geomechanical and flow behavior characterization of coal during the bioconversion process. This study presents experimental technique to estimate the gas/methane production with bioconversion of coal...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-302
... of excavations and tunnel surfaces are modeled by fictitious elements. In this work, the node-centric indirect BEM is employed, where linear triangular elements are used to discretize the domain, and nodes are assigned to the corner of each element. In this paper, the application of this approach is extended...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-304
... Abstract The main work presents the application and comparison of two constitutive laws described in different elasto-plastic frameworks: a Hardening Soil model, which fits better to the behavior of stiff soils and a Concrete model, which should describe the mechanical behavior of rocks better...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-305
... of the present approach focuses in the influence of the rheological and fragmentation laws in the evolution of the avalanche. The main contribution of the paper is (i) the development of a rheological model coupled with a fragmentation model, and (ii) its application to a real avalanche. We have made a study...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-311
... and pressure in large geologic systems is critical for the evaluation of potential energy resources and the viability of their exploration. During the last 2 decades, geomechanical modeling in such geologic systems has improved significantly with the application of poromechanics. Poro-elastoplastic material...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-312
... the geologic structure of the rock mass (Lemos, 2011). cohesion strength shear strength algorithm concrete-rock interface displacement reduction procedure strength reduction procedure application underground cavern upstream oil & gas procedure residual cohesion wedge stability safety...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-314
... Abstract A shaly sand model is presented that combines the application of the bounds for dispersed clay modeling and Backus averaging technique for laminated clay modeling. The model produces anisotropic elastic moduli. The moduli are easily populated in 3D or along a proposed wellbore...

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