scholarly journals Calibration of a Three-dimensional slope stability evaluation in Brazilian iron open pit mine

2021 ◽  
Author(s):  
Vidal Félix Navarro Torres ◽  
Rodrigo Dockendorff ◽  
Juan Manuel Girao Sotomayor ◽  
Cristian Castro ◽  
Aristotelina Ferreira da Silva
Keyword(s):  
Three Dimensional ◽  
Structural Features ◽  
Open Pit ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Strength Parameters ◽  
Dimensional Section ◽  
The Stability ◽  
Evaluation Techniques

Abstract It has historically been frequent among geotechnical practitioners, that the stability analysis of the slopes of an open pit is performed using a two dimensional section representing the highest and steepest walls within a certain geological setting. However, the literature shows that to predict rupture events in an open pit, a three-dimensional analysis would better represent the actual conditions, as the spatial distribution of the lithology and the structural features play an important role when defining the stability of the slopes. This paper presents the case study of an open it located in Brazil, which experienced instabilities between the years 2001-2019. An evaluation of the behavior of the open pit was performed by calibrating the strength parameters to represent the best documented rupture events. The three-dimensional model was made using the FLAC3D software. The results show that there is a good correlation between the results of the model and the reports of past instabilities. Finally, recommendations are presented for the inter-ramp angles for each lithology based on the calibrated stability analyzes performed. This work seeks to contribute to the knowledge in evaluation techniques for the three-dimensional behavior of open pits.

An Improved Design of the Manipulator on Automatic Tool Changer

2012 ◽  
Vol 591-593 ◽  
pp. 259-262
Author(s):  
Yan Sheng Li ◽  
Yan Heng Zhang ◽  
Han Xu Sun ◽  
Hai Yang Dong ◽  
Shun Li Zhao
Keyword(s):  
Limit State ◽  
Three Dimensional ◽  
Output Curve ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Automatic Tool Changer ◽  
Automatic Tool ◽  
Improved Design ◽  
The Stability

The tool falling and vibration faults often occur in the process of tool changing, In order to improve the stability of the tools on automatic tool changer, a new structure of the manipulator is presented. The new manipulator contains two-point locking instead of the original one-point locking, and the tools can be clamped more tightly. When the old manipulator is slotting the tool, the forces are analyzed, and the working load and parameters is determined by calculating and analyzing the output curve of manipulator. The three-dimensional model is built in ADMS, and the validity of the new designed manipulator is verified by the simulation in a limit state. The simulation result shows that the new manipulator can increase the ability of tool clamping effectively.

Construction of the Information Model of Ancient Architecture Components Based on BIM - A Case Study of Bracket Sets

2013 ◽  
Vol 300-301 ◽  
pp. 323-326 ◽  
Author(s):  
Ru Wang ◽  
Wei Xin Sun ◽  
Xiang Zhang
Keyword(s):  
Three Dimensional ◽  
Information Model ◽  
Data Dictionary ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Construction Methods

Taking Bracket sets as an example, we have discussed the construction methods of BIM-based Information model of the ancient architecture components. First, to build the three-dimensional model of the bracket sets with the method of CSG, and then write the information in the model with the technology of extended data and data dictionary, and to built Information model of the ancient architecture's components, at last we have given the key code to achieve it. The information model meet the rule about the ancient buildings’ modulus, it can be used for the measurement of existing ancient buildings, the repair and reconstruction of the ancient architecture, the design of antique architecture.

scholarly journals Reconstruction of an architectural object. Case study: Citadel fort No. 33 “Krakus” in Krakow

2018 ◽  
Vol 63 ◽  
pp. 00010
Author(s):  
Izabela Piech ◽  
Boguslawa Kwoczynska ◽  
Artur Ciszewski
Keyword(s):  
Point Cloud ◽  
3D Model ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Field Work ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Laser Measurements ◽  
The University

The aim of the study was to recreate, in the form of a 3D model, the Citadel fort No. 33 “Krakus” in Krakow. The data on the basis of which the three-dimensional model was made were obtained using a Leica ScanStation P40 terrestrial laser scanner, which is owned by the Faculty of Environmental Engineering and Geodesy of the University of Agriculture Hugona Kollataj in Krakow. The scope of field work included performing laser measurements, and then processing the point cloud in the Leica Cyclone 3D program and creating a full architectural model in SketchUp 2016.

Structure of human BPI (bactericidal/permeability-increasing protein) and implications for related proteins

2003 ◽  
Vol 31 (4) ◽  
pp. 791-794 ◽  
Author(s):  
L.J. Beamer
Keyword(s):  
Three Dimensional ◽  
Structural Features ◽  
Secretory Protein ◽  
Sequence Database ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
X Ray ◽  
Fold Family ◽  
Parotid Secretory Protein ◽  
Related Proteins

Human bactericidal/permeability-increasing protein (BPI) belongs to a family of mammalian lipopolysaccharide-binding and lipid transport proteins. Recent sequence database searches indicate that several other protein families, including the palate, lung and nasal epithelial clone (PLUNC), parotid secretory protein (PSP) and BPI-like proteins, are likely to share the BPI fold, which was determined through X-ray crystallographic studies. As the single representative of its fold family of known structure, the three-dimensional model of BPI suggests structural features that are likely to be conserved across this large and varied group of proteins.

scholarly journals Monitoring of Excavation Works Using Modern Measuring Technology

2019 ◽  
Vol 76 (2) ◽  
pp. 236
Author(s):  
George POPESCU ◽  
Cosmin Alin POPESCU ◽  
Mihai HERBEI ◽  
Lucian DRAGOMIR ◽  
Adrian SMULEAC ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Modern Technology ◽  
Activity Period ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Special Contribution ◽  
Specialized Software ◽  
Day To Day Operations ◽  
Preliminary Phase

Modern technology plays a fundamental role in the engineering activities undertaken in day-to-day operations, in order to obtain the necessary material for construction or to obtain certain useful materials that are found near the surface. A special contribution of this branch of terrestrial measurements, of the topography, using modern technology, is materialized by specific studies carried out from a preliminary phase of design of the operation and up to the phase in which the perimeter is ecologized. The present article aims to test and evaluate the accuracy of the data for volumetric measurements of exploited material, using modern technology and specialized software based on topographic altitude, with which we will be able to realize the three-dimensional model of the operating perimeter. For this purpose, an exploitation has been chosen on the appropriate surface, materialized through a case study, with reference to the Doman Quarry, Caras Severin, in which we determined the volumes exploited during the activity period.

scholarly journals Stability of Three-Dimensional Slurry Trenches with Inclined Ground Surface: A Theoretical Study

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Xiao-Fei Jin ◽  
Shu-Ting Liang ◽  
Xiao-Jun Zhu
Keyword(s):  
Safety Factor ◽  
Three Dimensional ◽  
Ground Surface ◽  
Theoretical Method ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Coulomb Type ◽  
The Stability ◽  
Inclined Angle ◽  
2D And 3D

Stability of slurry trenches is an important issue during the construction of the groundwater cutoff walls and diaphragm walls, and thus gradually draws attention. In this paper, a theoretical method for a three-dimensional trench model with an inclined ground was proposed. Based on the Coulomb-type force equilibrium, a safety factor assessing the stability was derived. The results showed that the existing two-dimensional model was conservative compared to the present three-dimensional model; concretely, a greater inclined angle of the inclined ground and trench length decreased the safety factor. This work could be used to assess the trench stability for both 2D and 3D cases with inclined ground surfaces.

scholarly journals Stereo Imaging In Fashion Photography

2018 ◽  
Vol 11 (1) ◽  
pp. 38-55
Author(s):  
Leonie Häsler
Keyword(s):  
Historical Context ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Moving Images ◽  
Fashion Photography ◽  
Image Collection ◽  
Media Practices

Fashion photographs are generally two-dimensional images showing one side of a three-dimensional model. This paper, however, deals with far less well-known stereoscopic fashion photographs. Stereoscopy is a technique that creates the illusion of a 3-D image. Based on the image collection of Swiss textile and clothes company HANRO, the article analyzes the composition of 3-D pictures by putting them in a broader media-historical context. The archived stereoscopic photographs date back to the 1950s and show a series of women’s fashion. In the same period, Hollywood experienced a 3-D-boom that may have had a technical and aesthetical impact on these photographs. Although fashion is not mediated in moving images in this case study, codes or formal languages of a film are inscribed in the images, as will be shown in the following text. Building on these findings, this paper further discusses the influence of cinematography and other media practices on the fashion industry’s attempt to free its fashion imagery from the confines of a two-dimensional page.

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